1
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Chiacchio MA, Legnani L. Density Functional Theory Calculations: A Useful Tool to Investigate Mechanisms of 1,3-Dipolar Cycloaddition Reactions. Int J Mol Sci 2024; 25:1298. [PMID: 38279298 PMCID: PMC10816517 DOI: 10.3390/ijms25021298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/28/2024] Open
Abstract
The present review contains a representative sampling of mechanistic studies, which have appeared in the literature in the last 5 years, on 1,3-dipolar cycloaddition reactions, using DFT calculations. Attention is focused on the mechanistic insights into 1,3-dipoles of propargyl/allenyl type and allyl type such as aza-ylides, nitrile oxides and azomethyne ylides and nitrones, respectively. The important role played by various metal-chiral-ligand complexes and the use of chiral eductors in promoting the site-, regio-, diastereo- and enatioselectivity of the reaction are also outlined.
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Affiliation(s)
- Maria Assunta Chiacchio
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Laura Legnani
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
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2
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Zhang X, Ma X, Zhang W. Decarboxylative 1,3-dipolar cycloaddition of amino acids for the synthesis of heterocyclic compounds. Beilstein J Org Chem 2023; 19:1677-1693. [PMID: 38025085 PMCID: PMC10644012 DOI: 10.3762/bjoc.19.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023] Open
Abstract
The [3 + 2] cycloadditions of stabilized azomethine ylides (AMYs) derived from amino esters are well-established. However, the reactions of semi-stabilized AMYs generated from decarboxylative condensation of α-amino acids with arylaldehydes are much less explored. The [3 + 2] adducts of α-amino acids could be used for a second [3 + 2] cycloaddition as well as for other post-condensation modifications. This article highlights our recent work on the development of α-amino acid-based [3 + 2] cycloaddition reactions of N-H-type AMYs in multicomponent, one-pot, and stepwise reactions for the synthesis of diverse heterocycles related to some bioactive compounds and natural products.
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Affiliation(s)
- Xiaofeng Zhang
- Center for Green Chemistry and Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125, USA
- Department of Medicinal Chemistry, Cerevel Therapeutics, 222 Jacobs St Suite 200, Cambridge, MA 02141, USA
| | - Xiaoming Ma
- School of Pharmacy, Changzhou University, Changzhou 213164, China
| | - Wei Zhang
- Center for Green Chemistry and Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125, USA
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3
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Sahoo SC, Parida C, Pan SC. Organocatalytic Asymmetric Domino [3+2]-Cycloaddition-Acyl Transfer Reaction between Azomethine Ylides and α-Nitro-α,β-Unsaturated Ketones. Chem Asian J 2023; 18:e202300563. [PMID: 37578733 DOI: 10.1002/asia.202300563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 08/15/2023]
Abstract
Herein we have developed an organocatalytic asymmetric domino [3+2]-cycloaddition-acyl transfer reaction between in situ generated azomethine ylides and α-nitro-α,β-unsaturated ketones. The desired penta-substituted pyrrolidine products were obtained in high yields and in moderate to good enantio- and diastereoselectivities. Also, an isomerization reaction in silica gel was performed for the formation of another diastereomer in high yields with retention of enantioselectivities.
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Affiliation(s)
- Subas Chandra Sahoo
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam, India, 781039
| | - Chandrakanta Parida
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam, India, 781039
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam, India, 781039
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4
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Nguyen AT, Kim H. Recent Advances in Synthetic Routes to Azacycles. Molecules 2023; 28:2737. [PMID: 36985708 PMCID: PMC10054516 DOI: 10.3390/molecules28062737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/15/2023] [Accepted: 03/16/2023] [Indexed: 03/22/2023] Open
Abstract
A heterocycle is an important structural scaffold of many organic compounds found in pharmaceuticals, materials, agrochemicals, and biological processes. Azacycles are one of the most common motifs of a heterocycle and have a variety of applications, including in pharmaceuticals. Therefore, azacycles have received significant attention from scientists and a variety of methods of synthesizing azacycles have been developed because their efficient synthesis plays a vital role in the production of many useful compounds. In this review, we summarize recent approaches to preparing azacycles via different methods as well as describe plausible reaction mechanisms.
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5
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Wang RQ, Shen C, Cheng X, Dong XQ, Wang CJ. Copper-catalyzed asymmetric propargylic substitution with salicylaldehyde-derived imine esters. Chem Commun (Camb) 2022; 58:8552-8555. [PMID: 35815621 DOI: 10.1039/d2cc01695h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper-catalyzed asymmetric propargylic substitution with salicylaldehyde-derived imine esters and propargylic carbonates has been successfully realized, generating a wide range of chiral amino acid derivatives containing propargylic groups with excellent results (up to 95% yield and 94% ee). The ortho-hydroxy group of the salicylaldehyde-derived imine esters is crucial to increase the reactivity and stabilize the azomethine ylide, which may be due to the formation of an intramolecular hydrogen bond between the hydroxyl group and the imine group. A series of synthetic transformations were carried out to access other important chiral compounds, which displayed the synthetic versatility.
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Affiliation(s)
- Ruo-Qing Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Suzhou Institute of Wuhan University, Wuhan University, Wuhan, Hubei, 430072, P. R. China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 230021, China
| | - Chong Shen
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Suzhou Institute of Wuhan University, Wuhan University, Wuhan, Hubei, 430072, P. R. China.
| | - Xiang Cheng
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Suzhou Institute of Wuhan University, Wuhan University, Wuhan, Hubei, 430072, P. R. China.
| | - Xiu-Qin Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Suzhou Institute of Wuhan University, Wuhan University, Wuhan, Hubei, 430072, P. R. China. .,Suzhou Institute of Wuhan University, Suzhou, Jiangsu, 215123, P. R. China
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Suzhou Institute of Wuhan University, Wuhan University, Wuhan, Hubei, 430072, P. R. China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 230021, China
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6
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McLeod DA, Thøgersen MK, Barløse CL, Skipper ML, Obregón EB, Jørgensen KA. Enantioselective (8+3) Cycloadditions by Activation of Donor–Acceptor Cyclopropanes Employing Chiral Brønsted Base Catalysis. Angew Chem Int Ed Engl 2022; 61:e202206096. [PMID: 35580010 PMCID: PMC9401081 DOI: 10.1002/anie.202206096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Indexed: 12/18/2022]
Abstract
A novel enantioselective (8+3) cycloaddition between donor–acceptor cyclopropanes and heptafulvenoids catalysed by a chiral bifunctional Brønsted base is described. Importantly, the reaction, which leverages an anionic activation strategy, is divergent from prototypical Lewis‐acid activation protocols. A series of cyclopropylketones react with tropones affording the desired (8+3) cycloadducts in high yield and enantiomeric excess. For barbiturate substituted heptafulvenes, the (8+3) cycloaddition with cyclopropylketones proceeds in good yield, excellent diastereoselectivity and high enantiomeric excess. The experimental work is supported by DFT calculations, which indicate that the bifunctional organocatalyst activates both the donor–acceptor cyclopropane and tropone; the reaction proceeds in a step‐wise manner with the ring‐closure being the stereodetermining step.
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Affiliation(s)
- David A. McLeod
- Department of Chemistry Aarhus University 8000 Aarhus C Denmark
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7
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Jinno S, Senoo T, Mori K. Access to ortho-Hydroxyphenyl Ketimines via Imine Anion-Mediated Smiles Rearrangement. Org Lett 2022; 24:4140-4144. [PMID: 35670731 DOI: 10.1021/acs.orglett.2c01349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have achieved a facile access to N-(2-halophenyl)-2-hydroxyphenylimine derivatives via imine anion-mediated Smiles rearrangement. When 2-(2-halophenoxy)benzonitriles were treated with 1.2-1.4 equiv of organolithium reagents, nucleophilic addition to the nitrile group followed by Smiles rearrangement occurred to give various N-(2-halophenyl)-2-hydroxyphenylimine derivatives, which are sometimes difficult to synthesize by the conventional acid-promoted condensation reaction between carbonyl compounds and aniline derivatives, in good to excellent chemical yields (up to 91%).
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Affiliation(s)
- Shunki Jinno
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Takahiro Senoo
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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8
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Guerrero-Corella A, Fraile A, Alemán J. Intramolecular Hydrogen-Bond Activation: Strategies, Benefits, and Influence in Catalysis. ACS Org Inorg Au 2022; 2:197-204. [PMID: 35673681 PMCID: PMC9164241 DOI: 10.1021/acsorginorgau.1c00053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/21/2022] [Accepted: 01/21/2022] [Indexed: 12/12/2022]
Abstract
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The activation of
molecules through intramolecular hydrogen-bond
formation to promote chemical reactions appears as a suitable strategy
in organic synthesis, especially for the preparation of chiral compounds
under metal and organocatalytic conditions. The use of this interaction
has enabled reactivity enhancement of reagents, as well as stabilization
of the chemical species and enantiocontrol of the processes.
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Affiliation(s)
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - José Alemán
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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9
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McLeod DA, Thøgersen MK, Barløse CL, Skipper ML, Obregón EB, Jørgensen KA. Enantioselective (8+3) Cycloadditions by Activation of Donor–Acceptor Cyclopropanes Employing Chiral Brønsted Base Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- David A. McLeod
- Department of Chemistry Aarhus University 8000 Aarhus C Denmark
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10
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Pookkandam Parambil S, Pulikkal Veettil S, Dehaen W. The Synthesis of Five-Membered N-Heterocycles by Cycloaddition of Nitroalkenes with (In)Organic Azides and Other 1,3-Dipoles. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1547-0196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractCycloaddition reactions have emerged as rapid and powerful methods for constructing heterocycles and carbocycles. [3+2] Cycloadditions of nitroalkenes with various 1,3-dipoles have been an interesting research area for many organic chemists. This review outlines the synthesis of N-substituted and NH-1,2,3-triazoles along with other five-membered N-heterocycles through cycloaddition reactions of nitroalkenes.1 Introduction2 Synthesis of 1,2,3-Triazoles2.1 Synthesis of NH-1,2,3-Triazoles2.2 Synthesis of N-Substituted 1,2,3-Triazoles3 Synthesis of Pyrrolidines and Pyrroles4 Synthesis of Pyrazoles5 Conclusion
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Affiliation(s)
- Shandev Pookkandam Parambil
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven
- Department of Applied Chemistry, Cochin University of Science and Technology
| | | | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven
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11
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Zhao JQ, Zhou S, Yang L, Du HY, You Y, Wang ZH, Zhou MQ, Yuan WC. Catalytic Asymmetric Dearomative 1,3-Dipolar Cycloaddition of 2-Nitrobenzothiophenes and Isatin-Derived Azomethine Ylides. Org Lett 2021; 23:8600-8605. [PMID: 34672632 DOI: 10.1021/acs.orglett.1c03318] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An enantioselective dearomative 1,3-dipolar cycloaddition of 2-nitrobenzothiophenes and isatin-derived azomethine ylides with a bifunctional hydrogen-bonding thiourea catalyst was established, giving polyheterocyclic compounds in excellent results (up to 99% yield, >20:1 dr for all cases and up to 99% ee). The enantioselectivity could be reversed by the bifunctional hydrogen-bonding squaramide catalyst containing the same chiral source as in the thiourea catalyst. DFT calculations revealed the origin of the observed stereochemistry and the reversal of enantioselectivity.
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Affiliation(s)
- Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Shun Zhou
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.,National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Lei Yang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.,National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Hong-Yan Du
- Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - Yong You
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Ming-Qiang Zhou
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Wei-Cheng Yuan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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12
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Del Río-Rodríguez R, Laina-Martín V, Fernández-Salas JA, Alemán J. Enantioselective vinylogous Mukaiyama aldol reaction of α-ketoesters under bifunctional organocatalysis. Chem Commun (Camb) 2021; 57:11665-11668. [PMID: 34672305 DOI: 10.1039/d1cc04263g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective vinylogous Mukaiyama aldol reaction to ketoesters catalysed by a hydrogen-bond-donor-based bifunctional organocatalyst is presented. The addition of silyloxy dienol ether gives rise to multifunctional chiral tertiary alcohols bearing a versatile α,β-unsaturated aldehyde with excellent enantiocontrol.
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Affiliation(s)
- Roberto Del Río-Rodríguez
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain.
| | - Víctor Laina-Martín
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain.
| | - Jose A Fernández-Salas
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain. .,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - José Alemán
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain. .,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
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13
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Wu ZQ, Zhang MR, Zhou Han-Chen XY, Yang JL, Zhang YH, Li WH. Catalyst-free [3+2] cycloaddition of azodicarbonyls and -hydroxyaryl azomethine ylides on water. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Laina-Martín V, Humbrías-Martín J, Mas-Ballesté R, Fernández-Salas JA, Alemán J. Enantioselective Inverse-Electron Demand Aza-Diels-Alder Reaction: ipso,α-Selectivity of Silyl Dienol Ethers. ACS Catal 2021; 11:12133-12145. [PMID: 34621594 PMCID: PMC8491166 DOI: 10.1021/acscatal.1c03390] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Indexed: 12/27/2022]
Abstract
![]()
A highly
efficient enantioselective inverse-electron-demand aza-Diels–Alder
reaction between aza-sulfonyl-1-aza-1,3-butadienes and silyl (di)enol
ethers has been developed. The presented methodology allows the synthesis
of benzofuran-fused 2-piperidinol derivatives with three contiguous
stereocenters in a highly selective manner, as even the hemiaminal
center is completely stereocontrolled. Density functional theory (DFT)
calculations support that the hydrogen-bond donor-based bifunctional
organocatalyst selectively triggers the reaction through the ipso,α-position
of the dienophile, in contrast to the reactivity observed for dienolates
in situ generated from β,γ-unsaturated derivatives. Moreover,
the calculations have clarified the mechanism of the reaction and
the ability of the hydrogen-bond donor core to hydrolyze selectively
the E isomer of the dienol ether. Furthermore, to
demonstrate the applicability of silyl enol ethers as nucleophiles
in the asymmetric synthesis of interesting benzofuran-fused derivatives,
the catalytic system has also been implemented for the highly efficient
installation of an aromatic ring in the piperidine adducts.
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Affiliation(s)
- Víctor Laina-Martín
- Departamento de Química Orgánica (módulo 1), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Jorge Humbrías-Martín
- Departamento de Química Orgánica (módulo 1), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Rubén Mas-Ballesté
- Departamento de Química Inorgánica (módulo 7), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Jose A. Fernández-Salas
- Departamento de Química Orgánica (módulo 1), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
- Departamento de Química Inorgánica (módulo 7), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - José Alemán
- Departamento de Química Orgánica (módulo 1), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
- Departamento de Química Inorgánica (módulo 7), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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15
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Shahzad A, Khan E, Said M, Khan GS, Syed MG, Noor A, Zahoor M, Ullah R, Bari A. Complexes of 1,3-Diisobutyl Thiourea with Copper(I), Zinc(II) and Mercury(II): Their Antioxidant and Antibacterial Evaluation. Crystals 2021; 11:989. [DOI: 10.3390/cryst11080989] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The reaction of 1,3-Diisobutyl thiourea (Tu) with metal salts, {[CuX (X = Cl, I)], [ZnCl2] and [HgI2] in an appropriate stoichiometric ratio afforded the corresponding metal complexes [Tu2CuCl] (1), [Tu3CuI] (2), [Tu2ZnCl2] (3) and [Tu2HgI2] (4) in good yields. The FT-IR data show typically broad signals (3278–3288 cm−1) attributed to the involvement of NH bonds in extensive hydrogen bonding. The structures of complexes were proposed based on a spectroscopic data set. Compounds 1 and 2 were additionally characterized by single-crystal X-ray analysis. Complexes 1–4 were tested for their free radical scavenging efficiency using 2,2-diphenyl-1-picrylhydrazyl free radical (hereafter abbreviated as DPPH). The free radical scavenging activity was a function of decrease in the resultant absorption of DPPH solution after the mixing of an appropriate concentration of the respective complex. The activity of complexes was determined to be dose dependent and increased concentration of the complex resulted in improved antioxidant activity. Compound 1 was found to be the most efficient, with 79.9% free radical scavenging activity. Complexes were also tested for their efficiency against selected strains of bacteria (E. coli, S. flexneri, S. typhi, and P. aeruginosa) and the activities were compared to commercially available standard drug cephradine. Compound 1 was more active against P.aeruginosa (ZI 13.25), while compound 4 was found to be more active against E. coli (ZI 11.0), S. flexneri (ZI 11.2), and S. typhi (ZI 10.5).
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16
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Guerrero‐Corella A, Valle‐Amores MA, Fraile A, Alemán J. Enantioselective Organocatalyzed
aza
‐Michael Addition Reaction of 2‐Hydroxybenzophenone Imines to Nitroolefins under Batch and Flow Conditions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Miguel A. Valle‐Amores
- Organic Chemistry Department, Módulo 1 Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1 Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
| | - José Alemán
- Organic Chemistry Department, Módulo 1 Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
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17
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Vera S, Vázquez A, Rodriguez R, Pozo SD, Urruzuno I, Cózar AD, Mielgo A, Palomo C. Synthesis of β-Hydroxy α-Amino Acids Through Brønsted Base-Catalyzed syn-Selective Direct Aldol Reaction of Schiff Bases of Glycine o-Nitroanilide. J Org Chem 2021; 86:7757-7772. [PMID: 33998227 PMCID: PMC9490875 DOI: 10.1021/acs.joc.1c00406] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
![]()
Here
we report the highly enantio- and syn-selective
synthesis of β-hydroxy α-amino acids from glycine imine
derivatives under Brønsted base (BB) catalysis. The key of this
approach is the use of benzophenone-derived imine of glycine o-nitroanilide as a pronucleophile, where the o-nitroanilide framework provides an efficient hydrogen-bonding platform
that accounts for nucleophile reactivity and diastereoselectivity.
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Affiliation(s)
- Silvia Vera
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain
| | - Ana Vázquez
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain
| | - Ricardo Rodriguez
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain
| | - Sandra Del Pozo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain
| | - Iñaki Urruzuno
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain
| | - Abel de Cózar
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018 San Sebastián, Spain
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18
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Phillips AMF, Prechtl MHG, Pombeiro AJL. Non-Covalent Interactions in Enantioselective Organocatalysis: Theoretical and Mechanistic Studies of Reactions Mediated by Dual H-Bond Donors, Bifunctional Squaramides, Thioureas and Related Catalysts. Catalysts 2021; 11:569. [DOI: 10.3390/catal11050569] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Chiral bifunctional dual H-bond donor catalysts have become one of the pillars of organocatalysis. They include squaramide, thiosquaramide, thiourea, urea, and even selenourea-based catalysts combined with chiral amines, cinchona alkaloids, sulfides, phosphines and more. They can promote several types of reactions affording products in very high yields and excellent stereoselectivities in many cases: conjugate additions, cycloadditions, the aldol and Henry reactions, the Morita–Baylis–Hilman reaction, even cascade reactions, among others. The desire to understand mechanisms and the quest for the origins of stereoselectivity, in attempts to find guidelines for developing more efficient catalysts for new transformations, has promoted many mechanistic and theoretical studies. In this review, we survey the literature published in this area since 2015.
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19
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Przydacz A, Bojanowski J, Albrecht A, Albrecht Ł. Hydroxyl-group-activated azomethine ylides in organocatalytic H-bond-assisted 1,3-dipolar cycloadditions and beyond. Org Biomol Chem 2021; 19:3075-3086. [PMID: 33885562 DOI: 10.1039/d0ob02380a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
1,3-Dipolar cycloaddition constitutes a powerful means for the synthesis of five-membered heterocycles. Recently, the potential of this field of chemistry has been expanded by the employment of organocatalytic activation strategies. One group of substrates, namely imines derived from salicylaldehydes, is particularly useful. Additional activation via intramolecular H-bonding interactions offered by the presence of an ortho-hydroxyl phenolic group in their structure results in increased reactivity of these reactants. Furthermore, it can be utilized in subsequent reactions creating chemical and stereochemical diversity. This minireview provides a summary of the recent progress in this field of organocatalysis and indicates other important applications of hydroxyl-group-activated azomethine ylides in asymmetric organocatalysis.
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Affiliation(s)
- Artur Przydacz
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Łódź, Poland.
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20
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Kiran INC, Fujita K, Kobayashi K, Tanaka S, Kitamura M. A Monocationic Zn(II) Acetate Complex of a Chiral Bisamidine Dioxolane Ligand, Naph-diPIM-dioxo-R, for the Asymmetric 1,3-Dipolar Cycloaddition of Tridentate α-Substituted α-Imino Esters and Acrylates to Multi-Substituted Prolines: Importance of an n-π* Interaction for High Enantioselectivity. BCSJ 2021. [DOI: 10.1246/bcsj.20200266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Kazuki Fujita
- Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Kazuki Kobayashi
- Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Shinji Tanaka
- Research Center for Materials Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Masato Kitamura
- Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
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21
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Bertuzzi G, McLeod D, Mohr LM, Jørgensen KA. Organocatalytic Enantioselective 1,3-Dipolar [6+4] Cycloadditions of Tropone. Chemistry 2020; 26:15491-15496. [PMID: 32677710 DOI: 10.1002/chem.202003329] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Indexed: 01/03/2023]
Abstract
A highly stereoselective 1,3-dipolar [6+4] cycloaddition towards bridged azabicyclo[4.3.1]decane scaffolds has been developed, reacting aldehydes, 2-aminomalonates and tropone under mild conditions in the presence of a chiral phosphoric acid catalyst. The scope is demonstrated for a series of aldehydes and 2-aminomalonates, and the reaction proceeds in high yields, >95:5 d.r. and up to 99 % ee. A series of transformations, as well as a mechanistic proposal, are presented.
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Affiliation(s)
- Giulio Bertuzzi
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - David McLeod
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Lisa-Marie Mohr
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Karl Anker Jørgensen
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
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22
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Dai Z, Zhu J, Su W, Zeng W, Liu Z, Chen M, Zhou Q. Phosphine-Catalyzed Stereoselective Tandem Annulation Reaction for the Synthesis of Chromeno[4,3-b]pyrroles. Org Lett 2020; 22:7008-7012. [DOI: 10.1021/acs.orglett.0c02558] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zonghao Dai
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jin Zhu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Wenbo Su
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Wuxian Zeng
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ziqi Liu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ming Chen
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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23
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Zhu J, Su W, Xiong C, Bai R, Zhou Q, Chen M. Catalyst-Free [3+2] Cycloaddition of Electron-Deficient Alkynes and o-Hydroxyaryl Azomethine Ylides in Water. ACS Omega 2020; 5:18244-18253. [PMID: 32743200 PMCID: PMC7392385 DOI: 10.1021/acsomega.0c01856] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
A catalyst-free [3 + 2] cycloaddition reaction of electron-deficient alkynes and o-hydroxyaryl azomethine ylides in water was developed, affording pyrroline derivatives in moderate to high yields (up to 90%).
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24
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Greszler SN, Zhao G, Buchman M, Searle XB, Liu B, Voight EA. General Asymmetric Synthesis of Densely Functionalized Pyrrolidines via Endo-Selective [3+2] Cycloaddition of β-Quaternary-Substituted Nitroalkenes and Azomethine Ylides. J Org Chem 2020; 85:7620-7632. [PMID: 32374998 DOI: 10.1021/acs.joc.0c00820] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A scalable endo-selective synthesis of 2,3,4,5-tetrasubstituted pyrrolidines via cycloaddition of nitroalkenes and azomethine ylides is reported using a P,N-type ferrocenyl ligand and [Cu(OTf)]2·C6H6. The robust method is tolerant of a wide range of functionalities, including rarely reported quaternary nitroalkene substitution and heteroaromatic and hindered ortho-substituted arenes on the azomethine ylide. Subsequent transformations highlight the utility of the method in the synthesis of densely functionalized small molecules suitable for fragment-based drug discovery and the cystic fibrosis C2-corrector clinical candidate ABBV-3221.
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Affiliation(s)
- Stephen N Greszler
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Gang Zhao
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Marek Buchman
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Xenia B Searle
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Bo Liu
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Eric A Voight
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
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25
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García‐Mingüens E, Selva V, Larrañaga O, Nájera C, Sansano JM, Cózar A. Nitroprolinates as Nucleophiles in Michael‐type Additions and Acylations. Synthesis of Enantiomerically Enriched Fused Amino‐pyrrolidino‐[1,2‐
a
]pyrazinones and ‐diketopiperazines. ChemCatChem 2020. [DOI: 10.1002/cctc.201902382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eduardo García‐Mingüens
- Departamento de Química Orgánica Facultad de CienciasUniversidad de Alicante 03080 - Alicante Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Instituto de Síntesis Orgánica (ISO)Universidad de Alicante 03080 - Alicante Spain
| | - Verónica Selva
- Departamento de Química Orgánica Facultad de CienciasUniversidad de Alicante 03080 - Alicante Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Instituto de Síntesis Orgánica (ISO)Universidad de Alicante 03080 - Alicante Spain
| | - Olatz Larrañaga
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica I Facultad de QuímicaUniversidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU and Donostia International Physics Center (DIPC) P. K. 1072 E-20018 San Sebastián Spain
| | - Carmen Nájera
- Departamento de Química Orgánica Facultad de CienciasUniversidad de Alicante 03080 - Alicante Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
| | - José M. Sansano
- Departamento de Química Orgánica Facultad de CienciasUniversidad de Alicante 03080 - Alicante Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Instituto de Síntesis Orgánica (ISO)Universidad de Alicante 03080 - Alicante Spain
| | - Abel Cózar
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica I Facultad de QuímicaUniversidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU and Donostia International Physics Center (DIPC) P. K. 1072 E-20018 San Sebastián Spain
- IKERBASQUE Basque Foundation for Science 48011 Bilbao Spain
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26
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27
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Chen L, He J. DABCO-Catalyzed Michael/Alkylation Cascade Reactions Involving α-Substituted Ammonium Ylides for the Construction of Spirocyclopropyl Oxindoles: Access to the Powerful Chemical Leads against HIV-1. J Org Chem 2020; 85:5203-5219. [DOI: 10.1021/acs.joc.9b03164] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lin Chen
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China
| | - Jin He
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China
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28
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Dai Z, Zhu J, Wang J, Su W, Yang F, Zhou Q. Phosphine‐Catalyzed Chemoselective [4+3] Cycloaddition of Alminine Esters and β′‐acetoxy Allenoates for Divergent Synthesis of Azepines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901132] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zonghao Dai
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry China Pharmaceutical University Nanjing 210009 People's Republic of China
| | - Jin Zhu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry China Pharmaceutical University Nanjing 210009 People's Republic of China
| | - Jiahua Wang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry China Pharmaceutical University Nanjing 210009 People's Republic of China
| | - Wenbo Su
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry China Pharmaceutical University Nanjing 210009 People's Republic of China
| | - Fulai Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry China Pharmaceutical University Nanjing 210009 People's Republic of China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry China Pharmaceutical University Nanjing 210009 People's Republic of China
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29
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Wu SL, Li N, Yin GW, Xu Z, Ye F, Li L, Cui YM, Xu LW. Catalytic asymmetric cycloaddition of unsymmetrical EWG-activated alkenes to fully substituted pyrrolidines bearing three different carbonyl groups. Chem Commun (Camb) 2019; 55:14363-14366. [PMID: 31720613 DOI: 10.1039/c9cc07738c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A unique 1,3-dipolar [3+2] cycloaddition of alkyl 4-oxo-4-arylbut-2-enoates bearing two different electron-withdrawing groups was completed by using the silver/(R)-DTBM-Segphos catalyst system, which gives the corresponding fully substituted pyrrolidines with four stereogenic centers in good yields and with excellent enantioselectivities (up to 98% ee).
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Affiliation(s)
- Shi-Lu Wu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P. R. China.
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30
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Wang J, Dai Z, Xiong C, Zhu J, Lu J, Zhou Q. Palladium‐Catalyzed Allylic Alkylation of Aldimine Esters with Vinyl‐Cyclopropanes to Yield α,α‐Disubstituted α‐Amino Acid Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiahua Wang
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Zonghao Dai
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Cheng Xiong
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Jin Zhu
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Jinrong Lu
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
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31
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Humbrías‐Martín J, Pérez‐Aguilar MC, Mas‐Ballesté R, Dentoni Litta A, Lattanzi A, Della Sala G, Fernández‐Salas JA, Alemán J. Enantioselective Conjugate Azidation of
α,β
‐Unsaturated Ketones under Bifunctional Organocatalysis by Direct Activation of TMSN
3. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900831] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jorge Humbrías‐Martín
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid 28049 Madrid Spain
| | | | - Rubén Mas‐Ballesté
- Inorganic Chemistry Department, Módulo 7Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Antonella Dentoni Litta
- Dipartimento di Chimica e Biologia “A. Zambelli”Università degli Studi di Salerno 84084 Fisciano, SA Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”Università degli Studi di Salerno 84084 Fisciano, SA Italy
| | - Giorgio Della Sala
- Dipartimento di Chimica e Biologia “A. Zambelli”Università degli Studi di Salerno 84084 Fisciano, SA Italy
| | | | - José Alemán
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Universidad Autónoma de Madrid 28049 Madrid Spain
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32
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Furuya S, Kato S, Kanemoto K, Fukuzawa SI. Copper-Catalyzed Regio- and Diastereoselective 1,3-Dipolar Cycloaddition Reactions of Glycine Imino Esters with 1-Propene-1,3-sultone. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900738] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shohei Furuya
- Department of Applied Chemistry; Institute of Science and Engineering; Chuo University; Kasuga 1-13-27, Bunkyo-ku 112-8551 Tokyo Japan
| | - Shuma Kato
- Department of Applied Chemistry; Institute of Science and Engineering; Chuo University; Kasuga 1-13-27, Bunkyo-ku 112-8551 Tokyo Japan
| | - Kazuya Kanemoto
- Department of Applied Chemistry; Institute of Science and Engineering; Chuo University; Kasuga 1-13-27, Bunkyo-ku 112-8551 Tokyo Japan
| | - Shin-ichi Fukuzawa
- Department of Applied Chemistry; Institute of Science and Engineering; Chuo University; Kasuga 1-13-27, Bunkyo-ku 112-8551 Tokyo Japan
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33
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Trujillo C, Litvajova M, Cronin SA, Craig R, Connon SJ. The Steglich Rearrangement of 2‐Oxindole Derivatives Promoted by Anion‐based Nucleophilic Catalysis. ChemCatChem 2019. [DOI: 10.1002/cctc.201900756] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Cristina Trujillo
- School of Chemistry TrinityBiomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street Dublin 2 Ireland
| | - Mili Litvajova
- School of Chemistry TrinityBiomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street Dublin 2 Ireland
| | - Sarah A. Cronin
- School of Chemistry TrinityBiomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street Dublin 2 Ireland
| | - Ryan Craig
- School of Chemistry TrinityBiomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street Dublin 2 Ireland
| | - Stephen J. Connon
- School of Chemistry TrinityBiomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street Dublin 2 Ireland
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34
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Izzo JA, Myshchuk Y, Hirschi JS, Vetticatt MJ. Transition state analysis of an enantioselective Michael addition by a bifunctional thiourea organocatalyst. Org Biomol Chem 2019; 17:3934-3939. [PMID: 30942247 DOI: 10.1039/c9ob00072k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The mechanism of the enantioselective Michael addition of diethyl malonate to trans-β-nitrostyrene catalyzed by a tertiary amine thiourea organocatalyst is explored using experimental 13C kinetic isotope effects and density functional theory calculations. Large primary 13C KIEs on the bond-forming carbon atoms of both reactants suggest that carbon-carbon bond formation is the rate-determining step in the catalytic cycle. This work resolves conflicting mechanistic pictures that have emerged from prior experimental and computational studies.
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Affiliation(s)
- Joseph A Izzo
- Department of Chemistry, Binghamton University, Binghamton, NY 13902, USA.
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35
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Grzelak P, Saktura M, Sieroń L, Albrecht Ł. Intramolecular [2+2]‐Cycloaddition in the Synthesis of Polycyclic Tetrahydrothiopyran Derivatives Bearing a Cyclobutane Scaffold. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Paulina Grzelak
- Institute of Organic Chemistry, Faculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Maciej Saktura
- Institute of Organic Chemistry, Faculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Lesław Sieroń
- Institute of General and Ecological Chemistry, Faculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Faculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
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36
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Aguilar-galindo F, Tuñón AM, Fraile A, Alemán J, Díaz-tendero S. Role of intramolecular hydrogen bonds and electron withdrawing groups in the acidity of aldimines and ketimines: a density functional theory study. Theor Chem Acc 2019; 138. [DOI: 10.1007/s00214-019-2451-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Zhang X, Qiu W, Evans J, Kaur M, Jasinski JP, Zhang W. Double 1,3-Dipolar Cycloadditions of Two Nonstabilized Azomethine Ylides for Polycyclic Pyrrolidines. Org Lett 2019; 21:2176-2179. [PMID: 30883128 DOI: 10.1021/acs.orglett.9b00487] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Nonstabilized azomethine ylides derived from decarboxylation of oxazolidin-5-ones were used for double 1,3-dipolar cycloadditions in diastereoselective synthesis of pyrrolidine-containing tetracyclic compounds. This is the first example of one-pot and five-component reactions involving two nonstabilized azomethine ylides. Only CO2 and water were generated as byproducts.
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Affiliation(s)
- Xiaofeng Zhang
- Center for Green Chemistry and Department of Chemistry , University of Massachusetts Boston , 100 Morrissey Boulevard , Boston , Massachusetts 02125 , United States
| | - Weiqi Qiu
- Center for Green Chemistry and Department of Chemistry , University of Massachusetts Boston , 100 Morrissey Boulevard , Boston , Massachusetts 02125 , United States
| | - Jason Evans
- Center for Green Chemistry and Department of Chemistry , University of Massachusetts Boston , 100 Morrissey Boulevard , Boston , Massachusetts 02125 , United States
| | - Manpreet Kaur
- Department of Chemistry , Keene State College , 229 Main Street , Keene , New Hampshire 03435 , United States
| | - Jerry P Jasinski
- Department of Chemistry , Keene State College , 229 Main Street , Keene , New Hampshire 03435 , United States
| | - Wei Zhang
- Center for Green Chemistry and Department of Chemistry , University of Massachusetts Boston , 100 Morrissey Boulevard , Boston , Massachusetts 02125 , United States
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38
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Kaur N, Wu F, Alom NE, Ariyarathna JP, Saluga SJ, Li W. Intermolecular alkene difunctionalizations for the synthesis of saturated heterocycles. Org Biomol Chem 2019; 17:1643-1654. [PMID: 30452059 DOI: 10.1039/c8ob02443j] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Saturated heterocycles are important structural motifs in a range of pharmaceuticals and agrochemicals. As a result of their importance, syntheses of these molecules have been extensively investigated. Despite the progress in this area, the most adopted strategies are still often characterized with inefficiency or relying on functionalizations with specialized precursors and pre-existing cores. This review highlights a dynamic synthetic strategy for the direct synthesis of saturated heterocycles from intermolecular alkene difunctionalizations. These coupling processes are highly modular, and therefore, offer perhaps the most convenient means to prepare diverse heterocyclic structures in compound libraries for bioactivity evoluations.
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Affiliation(s)
- Navdeep Kaur
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
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39
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Ma X, Zhang X, Qiu W, Zhang W, Wan B, Evans J, Zhang W. One-Pot Synthesis of Triazolobenzodiazepines Through Decarboxylative [3 + 2] Cycloaddition of Nonstabilized Azomethine Ylides and Cu-Free Click Reactions. Molecules 2019; 24:E601. [PMID: 30743991 DOI: 10.3390/molecules24030601] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/03/2019] [Accepted: 02/05/2019] [Indexed: 11/22/2022] Open
Abstract
A one-pot synthesis of triazolobenzodiazepine-containing polycyclic compounds is introduced. The reaction process involves a decarboxylative three-component [3 + 2] cycloaddition of nonstabilized azomethine ylides, N-propargylation, and intramolecular click reactions.
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40
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Chang X, Sun XS, Che C, Hu YZ, Tao HY, Wang CJ. Copper(I)-Catalyzed Kinetic Resolution of exo-3-Oxodicyclopentadienes and endo-3-Oxodicyclopentadiene. Org Lett 2019; 21:1191-1196. [PMID: 30707591 DOI: 10.1021/acs.orglett.9b00136] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The first example of highly efficient kinetic resolution of exo-3-oxodicyclopentadienes and endo-3-oxodicyclopentadiene has been developed by means of Cu(I)-catalyzed asymmetric 1,3-dipolar cycloaddition of azomethine ylide. Compared with the existing methodologies for those synthetically important optically active convex molecules, the current protocol provides an alternative but more practical approach from the readily available racemic starting materials, which is free from the repetitive reduction/oxidation steps in the enzymatic resolution or the indispensable stoichiometric amount of chirality-induction reagents.
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Affiliation(s)
- Xin Chang
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Xi-Shang Sun
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Chao Che
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Yuan-Zheng Hu
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Hai-Yan Tao
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China.,State Key Laboratory of Elemento-organic Chemistry , Nankai University , Tianjin 300071 , China
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41
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Liang L, Niu HY, Wang DC, Yang XH, Qu GR, Guo HM. Facile synthesis of chiral [2,3]-fused hydrobenzofuran via asymmetric Cu(i)-catalyzed dearomative 1,3-dipolar cycloaddition. Chem Commun (Camb) 2019; 55:553-556. [DOI: 10.1039/c8cc09226e] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An intermolecular catalytic asymmetric dearomatization (CADA) reaction has been developed for the synthesis of chiral [2,3]-fused hydrobenzofurans.
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Affiliation(s)
- Lei Liang
- School of Environment
- Henan Normal University
- Xinxiang
- P. R. China
| | - Hong-Ying Niu
- School of Chemistry and Chemical Engineering
- Henan Institute of Science and Technology
- Xinxiang
- P. R. China
| | - Dong-Chao Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
| | - Xin-He Yang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
| | - Hai-Ming Guo
- School of Environment
- Henan Normal University
- Xinxiang
- P. R. China
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
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42
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Deng ZX, Xie ZZ, Zheng Y, Xiao JA, Wang RJ, Xiang HY, Yang H. Intramolecular hydrogen-bonding-assisted phosphine-catalysed [3 + 2] cyclisation of ynones with o-hydroxy/amino benzaldehydes. Org Biomol Chem 2019; 17:2187-2191. [DOI: 10.1039/c9ob00056a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new strategy for the synthesis of functionalized tetrahydrofuran derivatives was developed via a phosphine-catalysed [3 + 2] annulation reaction of aromatic aldehydes with 4-phenylbut-3-yn-2-one.
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Affiliation(s)
- Zhi-Xiong Deng
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Yu Zheng
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science
- Guangxi Teachers Education University
- Nanning 530001
- P. R. China
| | - Rui-Jia Wang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety
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43
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Cao J, Liu JY, Zhang YM, Wang ZY, Xu PF. Synergistic promotion by intramolecular hydrogen bonding: a bi-functionally catalyzed cascade reaction for the synthesis of enantiopure chromenopyrrolidines. Org Chem Front 2019. [DOI: 10.1039/c8qo01208c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An effective organocatalytic asymmetric cascade reaction of o-hydroxy aromatic aldimines and β,γ-unsaturated-α-ketoesters was developed.
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Affiliation(s)
- Jian Cao
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P.R. China
- Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-Containing Mineral Resources & School of Mineral Processing and Bioengineering
| | - Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P.R. China
| | - Yi-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P.R. China
| | - Zhu-Yin Wang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P.R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P.R. China
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44
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Yang WL, Sun ZT, Zhang J, Li Z, Deng WP. Enantioselective synthesis of 3-amino-hydrobenzofuran-2,5-diones via Cu(i)-catalyzed intramolecular conjugate addition of imino esters. Org Chem Front 2019. [DOI: 10.1039/c8qo01335g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The copper-catalyzed enantioselective intramolecular conjugate addition of imino esters for desymmetrization of cyclohexadienones was described, providing access to enantioenriched 3-amino-hydrobenzofuran-2,5-diones.
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Affiliation(s)
- Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhong-Tao Sun
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jian Zhang
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Wei-Ping Deng
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
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45
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Kowalczyk-Dworak D, Albrecht Ł. α,β-Unsaturated butenolides in an organocatalytic doubly annulative cascade for the preparation of 3,4-dihydrocoumarins. Org Biomol Chem 2019; 17:2624-2628. [DOI: 10.1039/c9ob00068b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An organocatalytic doubly annulative cascade utilizing α,β-unsaturated butenolides and imines (derived from salicyl aldehydes and α-amino-γ-lactones) as starting materials is described.
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Affiliation(s)
- Dorota Kowalczyk-Dworak
- Institute of Organic Chemistry
- Faculty of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry
- Faculty of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
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46
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Cao J, Fang R, Liu JY, Lu H, Luo YC, Xu PF. Organocatalytic Regiodivergent C−C Bond Cleavage of Cyclopropenones: A Highly Efficient Cascade Approach to Enantiopure Heterocyclic Frameworks. Chemistry 2018; 24:18863-18867. [DOI: 10.1002/chem.201803861] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 09/05/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Jian Cao
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 P. R. China
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 P. R. China
| | - Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 P. R. China
| | - Hong Lu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 P. R. China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 P. R. China
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47
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Martín-Sómer A, Arpa EM, Díaz-Tendero S, Alemán J. Intramolecular Hydrogen Bond Activation of Aza-Methylene Imines in Hydrogen Bond Bifunctional Catalysis - A Density Functional Theory Study. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ana Martín-Sómer
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - Enrique M. Arpa
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - Sergio Díaz-Tendero
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Condensed Matter Physics Center (IFIMAC); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - José Alemán
- Institute for Advanced Research in Chemical Sciences (IAdChem); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Organic Chemistry Deparment (modulo 1); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
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48
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Affiliation(s)
- Min-Seob Seo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Sumin Jang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Hoimin Jung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Hyunwoo Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
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49
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Chen Q, Bao Y, Yang X, Dai Z, Yang F, Zhou Q. Umpolung of o-Hydroxyaryl Azomethine Ylides: Entry to Functionalized γ-Aminobutyric Acid under Phosphine Catalysis. Org Lett 2018; 20:5380-5383. [DOI: 10.1021/acs.orglett.8b02297] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qingqing Chen
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Yishu Bao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Xiuqin Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Zonghao Dai
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Fulai Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
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50
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Rigotti T, Casado-Sánchez A, Cabrera S, Pérez-Ruiz R, Liras M, de la Peña O’Shea VA, Alemán J. A Bifunctional Photoaminocatalyst for the Alkylation of Aldehydes: Design, Analysis, and Mechanistic Studies. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01331] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Thomas Rigotti
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Antonio Casado-Sánchez
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Silvia Cabrera
- Inorganic Chemistry Department, Módulo 7, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Raúl Pérez-Ruiz
- Photoactivated Processes Unit, IMDEA Energy, Av. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain
| | - Marta Liras
- Photoactivated Processes Unit, IMDEA Energy, Av. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain
| | | | - José Alemán
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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