1
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Zhang GT, Li G, Wan L, Pu X, Chang J, Tang P, Chen FE. Asymmetric Total Synthesis of Anti-HBV Drug Entecavir: Catalytic Strategies for the Stereospecific Construction of Densely Substituted Cyclopentene Cores. Org Lett 2024. [PMID: 38809781 DOI: 10.1021/acs.orglett.4c01669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
We have successfully accomplished a catalytic asymmetric total synthesis of entecavir, a first-line antihepatitis B virus medication. The pivotal aspect of our strategy lies in the utilization of a Pd-catalyzed enyne borylative cyclization reaction, enabling the construction of a highly substituted cyclopentene scaffold with exceptional stereoselectivity. Additionally, we efficiently accessed the crucial 1,3-diol enyne system early in our synthetic route through a diarylprolinol organocatalyzed enantioselective cross-aldol reaction and Re-catalyzed allylic alcohol relocation. By strategically integrating these three catalytic protocols, we established a practical pathway for acquiring valuable densely heteroatom-substituted cyclopentene cores.
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Affiliation(s)
- Guo-Tai Zhang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Gen Li
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Linxi Wan
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xinxin Pu
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Junhai Chang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Pei Tang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Fen-Er Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
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2
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Deng J, Liu ZM, Zhu KR, Cui GL, Liu LX, Yan YH, Ning XL, Yu ZJ, Li GB, Qi QR. New ε-N-thioglutaryl-lysine derivatives as SIRT5 inhibitors: Chemical synthesis, kinetic and crystallographic studies. Bioorg Chem 2023; 135:106487. [PMID: 36996510 DOI: 10.1016/j.bioorg.2023.106487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/10/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023]
Abstract
SIRT5 has been implicated in various physiological processes and human diseases, including cancer. Development of new highly potent, selective SIRT5 inhibitors is still needed to investigate disease-related mechanisms and therapeutic potentials. We here report new ε-N-thioglutaryllysine derivatives, which were designed according to SIRT5-catalysed deacylation reactions. These ε-N-thioglutaryllysine derivatives displayed potent SIRT5 inhibition, of which the potential photo-crosslinking derivative 8 manifested most potent inhibition with an IC50 value of 120 nM to SIRT5, and low inhibition to SIRT1-3 and SIRT6. The enzyme kinetic assays revealed that the ε-N-thioglutaryllysine derivatives inhibit SIRT5 by lysine-substrate competitive manner. Co-crystallographic analyses demonstrated that 8 binds to occupy the lysine-substate binding site by making hydrogen-bonding and electrostatic interactions with SIRT5-specific residues, and is likely positioned to react with NAD+ and form stable thio-intermediates. Compound 8 was observed to have low photo-crosslinking probability to SIRT5, possibly due to inappropriate position of the diazirine group as observed in SIRT5:8 crystal structure. This study provides useful information for developing drug-like inhibitors and cross-linking chemical probes for SIRT5-related studies.
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3
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Hayashi Y. Diarylprolinol as an Effective Organocatalyst in Asymmetric Cross-aldol Reactions of Two Different Aldehydes. CHEM REC 2022:e202200159. [PMID: 35896950 DOI: 10.1002/tcr.202200159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 11/10/2022]
Abstract
The aldol reaction is one of the most important carbon-carbon bond-forming reactions in organic chemistry. Asymmetric direct cross-aldol reaction of two different aldehydes has been regarded as a difficult reaction because of the side reactions such as self-aldol reaction and over reaction. We found that trifluoromethyl-substituted diarylprolinol, α,α-bis[3,5-bis(trifluoromethyl)phenyl]-2-pyrrolidinemethanol (1), is an effective organocatalyst that promotes several cross-aldol reactions of aldehydes with excellent diastereo- and enantioselectivities. Acetaldehyde can be employed as a suitable nucleophilic aldehyde. Successful electrophilic aldehydes are ethyl glyoxylate, chloroacetaldehyde, dichloroacetaldehyde, chloral, α-alkyl-α-oxo aldehyde, trifluoroacetaldehyde, glyoxal, alkenyl aldehyde, alkynyl aldehyde, and formaldehyde. Some of the aldehydes are commercially available as a polymer solution, an aqueous solution, or in the hydrated form. They can be used directly in the asymmetric aldol reaction as a commercially available form, which is a synthetic advantage. Given that the obtained aldol products possess several functional groups along with a formyl moiety, they are synthetically useful chiral building blocks.
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Affiliation(s)
- Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
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4
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Nair VV, Arunprasath D, Solai P, Sekar G. Synergistic Dual Amine/Transition Metal Catalysis ‐ Recent Advances. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Pandidurai Solai
- IIT Madras: Indian Institute of Technology Madras Department of Chemistry INDIA
| | - Govindasamy Sekar
- Indian Institute of Technology Madras Department of Chemistry IIT Campus 600 036 Chennai INDIA
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5
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Zhong J, Yuan G, Liu J, Yu S, Wang X, Bian Q, Wang M. Enantioselective Synthesis of the Sex Pheromone of Lichen Moth, Miltochrista calamine, and Its Diastereomer. Synlett 2022. [DOI: 10.1055/s-0040-1719835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThe synthesis of a Miltochrista calamine sex pheromone and its diastereomer has been developed. The key steps of the synthetic approach involved Evans’ chiral auxiliaries and the addition of alkyne to aldehyde, which were firstly applied to prepare this sex pheromone and its diastereomer. The synthetic sex pheromone could be used to trap insects and study physiological and ecological questions of the lichen moth.
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6
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Livesay BN, Shores MP. Influence of Coordinated Triflate Anions on the Solution Magnetic Properties of a Neutral Iron(II) Complex. Inorg Chem 2021; 60:15445-15455. [PMID: 34596394 DOI: 10.1021/acs.inorgchem.1c02112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In an effort to probe the impacts of speciation on spin-state switching, the synthesis and unique solution-phase magnetic properties of [((TIPSC≡C)3tren)Fe(OTf)2] (1) are described. Analysis of the single-crystal X-ray diffraction data shows that the tris(iminoalkyne) ligand coordinates to the iron(II) center through all four nitrogen atoms, while the other two coordination sites are filled by the oxygen atoms from triflate anions. Solid-state variable-temperature (VT) magnetic studies show that 1 remains high-spin (HS) at all temperatures. In the presence of moderately strong coordinating solvents, solvent replaces the two bound triflate counteranions, as observed by 19F NMR spectroscopy and supported by conductivity measurements. VT solution measurements show 1 to be in the HS state when this solvent is oxygen-donating but low-spin (LS) with a nitrogen-donating solvent. In the noncoordinating solvent dichloromethane, both triflates are bound to the iron(II) center at room temperature, but upon cooling, 1 undergoes a coordination change, resulting in the loss of one triflate, as shown by 19F NMR. With the moderately coordinating solvent acetone, triflate dissociation upon cooling results in a spin-switching species with a T1/2 value of 171 K, characterized via 19F NMR, Evans' method, and solution magnetometry measurements. Solution magnetic measurements collected in structurally similar cyclopentanone suggest that the spin-state switching event is exclusive to the acetone environment, suggesting the influence of both the local coordination environment and aggregation. Additionally, a comparison of the solvodoynamic diameters via dynamic light scattering suggests that aggregation of 1 is significantly different in (CH3)2CO and (CD3)2CO, leading to the observation of spin-switching behavior in the former and fully HS behavior in the latter. This study highlights the sensitivity of solution magnetic properties to solvent choice.
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Affiliation(s)
- Brooke N Livesay
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Matthew P Shores
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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7
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Umemiya S, Terada M. Catalytic Enantioselective Allylation of Acetylenic Aldehydes by Chiral Phosphoric Acid/Transition Metal Cooperative Catalysis: Formal Synthesis of Fostriecin. Org Lett 2021; 23:3767-3771. [PMID: 33890790 DOI: 10.1021/acs.orglett.1c01166] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An enantioselective allylation of silyl-substituted acetylenic aldehydes by chiral phosphoric acid (CPA)/transition metal cooperative catalysis was developed. Enantioenriched homoallylic propargyl alcohols were obtained in good yields with excellent enantioselectivities (>99% ee) under mild conditions. Moreover, the shortest formal synthesis of fostriecin was achieved by the present enantioselective allylation protocol as the key step. The known intermediate of fostriecin reported by McDonald and co-worker was synthesized in only nine steps in 39% total yield.
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Affiliation(s)
- Shigenobu Umemiya
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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8
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MATSUMOTO K, SHIMAO H, FUJIKI Y, KAWASHITA N, KASHIMURA S. Electro-Generated Acids Catalyzed Epoxyolefin Cyclizations via Cationic Chain Reactions. ELECTROCHEMISTRY 2020. [DOI: 10.5796/electrochemistry.20-00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Kouichi MATSUMOTO
- Department of Chemistry, School of Science and Engineering, Kindai University
| | - Hiroki SHIMAO
- Department of Chemistry, School of Science and Engineering, Kindai University
| | - Yuta FUJIKI
- Department of Chemistry, School of Science and Engineering, Kindai University
| | - Norihito KAWASHITA
- Department of Life Science, School of Science and Engineering, Kindai University
| | - Shigenori KASHIMURA
- Department of Chemistry, School of Science and Engineering, Kindai University
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9
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Afewerki S, Córdova A. Enamine/Transition Metal Combined Catalysis: Catalytic Transformations Involving Organometallic Electrophilic Intermediates. Top Curr Chem (Cham) 2019; 377:38. [PMID: 31732819 PMCID: PMC6858407 DOI: 10.1007/s41061-019-0267-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/05/2019] [Indexed: 12/15/2022]
Abstract
The concept of merging enamine activation catalysis with transition metal catalysis is an important strategy, which allows for selective chemical transformations not accessible without this combination. The amine catalyst activates the carbonyl compounds through the formation of a reactive nucleophilic enamine intermediate and, in parallel, the transition metal activates a wide range of functionalities such as allylic substrates through the formation of reactive electrophilic π-allyl-metal complex. Since the first report of this strategy in 2006, considerable effort has been devoted to the successful advancement of this technology. In this chapter, these findings are highlighted and discussed.
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Affiliation(s)
- Samson Afewerki
- Department of Natural Sciences, Mid Sweden University, 851 70, Sundsvall, Sweden.
| | - Armando Córdova
- Department of Natural Sciences, Mid Sweden University, 851 70, Sundsvall, Sweden.
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10
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Ding XB, Furkert DP, Brimble MA. Highly Diastereoselective Synthesis of Syn-1,3-Dihydroxyketone Motifs from Propargylic Alcohols via Spiroepoxide Intermediates. Angew Chem Int Ed Engl 2019; 58:11830-11835. [PMID: 31218800 DOI: 10.1002/anie.201905736] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/19/2019] [Indexed: 12/29/2022]
Abstract
Syn dihydroxyketone motifs are embedded in a wide range of biologically active natural products, however the development of stereoselective synthetic methods to assemble these structures has proven a challenging task. We report a highly diastereoselective method for the synthesis of syn dihydroxyketones from propargylic alcohols, with wide scope for application in natural product synthesis. The reaction sequence involves regioselective cyclisation of propargylic alcohols with incorporation of a triketone to give enol dioxolanes that are then diastereoselectively epoxidised to form unusual spiroepoxide intermediates. Hydrolysis affords syn dihydroxyketones as essentially single diastereisomers. The reaction sequence is operationally simple, of wide substrate scope, and remarkably can be efficiently carried out as a one-pot process with no loss of overall yield or diastereoselectivity.
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Affiliation(s)
- Xiao-Bo Ding
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
| | - Daniel P Furkert
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
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11
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Ding X, Furkert DP, Brimble MA. Highly Diastereoselective Synthesis of
Syn
‐1,3‐Dihydroxyketone Motifs from Propargylic Alcohols via Spiroepoxide Intermediates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiao‐Bo Ding
- School of Chemical Sciences The University of Auckland 23 Symonds Street Auckland 1010 New Zealand
| | - Daniel P. Furkert
- School of Chemical Sciences The University of Auckland 23 Symonds Street Auckland 1010 New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences The University of Auckland 23 Symonds Street Auckland 1010 New Zealand
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12
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Meninno S, Volpe C, Lattanzi A. Diaryl Prolinols in Stereoselective Catalysis and Synthesis: An Update. ChemCatChem 2019. [DOI: 10.1002/cctc.201900569] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e BiologiaUniversity of Salerno Via Giovanni Paolo II 84084 Fisciano Italy
| | - Chiara Volpe
- Dipartimento di Chimica e BiologiaUniversity of Salerno Via Giovanni Paolo II 84084 Fisciano Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e BiologiaUniversity of Salerno Via Giovanni Paolo II 84084 Fisciano Italy
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13
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Gasperini D, Greenhalgh MD, Imad R, Siddiqui S, Malik A, Arshad F, Choudhary MI, Al-Majid AM, Cordes DB, Slawin AMZ, Nolan SP, Smith AD. Chiral Au I - and Au III -Isothiourea Complexes: Synthesis, Characterization and Application. Chemistry 2019; 25:1064-1075. [PMID: 30357947 DOI: 10.1002/chem.201804653] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/19/2018] [Indexed: 11/09/2022]
Abstract
During an investigation into the potential union of Lewis basic isothiourea organocatalysis and gold catalysis, the formation of gold-isothiourea complexes was observed. These novel gold complexes were formed in high yield and were found to be air- and moisture stable. A series of neutral and cationic chiral gold(I) and gold(III) complexes bearing enantiopure isothiourea ligands was therefore synthesized and fully characterized. The steric and electronic properties of the isothiourea ligands was assessed through calculation of their percent buried volume and the synthesis and analysis of novel iridium(I)-isothiourea carbonyl complexes. The novel gold(I)- and gold(III)-isothiourea complexes have been applied in preliminary catalytic and biological studies, and display promising preliminary levels of catalytic activity and potency towards cancerous cell lines and clinically relevant enzymes.
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Affiliation(s)
- Danila Gasperini
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Mark D Greenhalgh
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Rehan Imad
- H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Shezaib Siddiqui
- H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Anum Malik
- H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Fizza Arshad
- H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Muhammad Iqbal Choudhary
- H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.,Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21412, Saudi Arabia
| | - Abdullah M Al-Majid
- Department of Chemistry and Center for Sustainable Chemistry, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - David B Cordes
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Alexandra M Z Slawin
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Steven P Nolan
- Department of Chemistry and Center for Sustainable Chemistry, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.,Chemistry Department, College of Science, Ghent University, Krijgslaan 281, 9000, Ghent, Belgium
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
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14
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Zhang N, He T, Liu Y, Li S, Tan Y, Peng L, Li D, Shan C, Yan H. Organocatalytic atropo- and E/Z-selective Michael addition reaction of ynones with α-amido sulfones as sulfone-type nucleophile. Org Chem Front 2019. [DOI: 10.1039/c8qo01241e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We describe herein the first enantioselective organocatalytic Michael addition reaction of α-amido sulfones to ynones to access axially chiral styrenes.
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Affiliation(s)
- Nan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Tingting He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Yidong Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Shan Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Yu Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Lei Peng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Dongmei Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Chunhui Shan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
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15
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Hayashi Y, Saitoh T, Arase H, Kawauchi G, Takeda N, Shimasaki Y, Sato I. Two-Pot Synthesis of Chiral 1,3-syn
-Diols through Asymmetric Organocatalytic Aldol and Wittig Reactions Followed by Domino Hemiacetal/Oxy-Michael Reactions. Chemistry 2018; 24:4909-4915. [DOI: 10.1002/chem.201705930] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Yujiro Hayashi
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Takanobu Saitoh
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Hiromu Arase
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Genki Kawauchi
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Naohiro Takeda
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Yasuharu Shimasaki
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Itaru Sato
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8578 Japan
- Present address: Department of Chemistry; Faculty of Science; Ibaraki University; Ibaraki 310-8512 Japan
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16
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Ruthenium complexes of the general formula [RuCl2(PHOX)2] as precatalysts in propargylic substitution reactions. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2017.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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17
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Gurubrahamam R, Nagaraju K, Chen K. Organocatalytic synthesis of densely functionalized oxa-bridged 2,6-epoxybenzo[b][1,5]oxazocine heterocycles. Chem Commun (Camb) 2018; 54:6048-6051. [DOI: 10.1039/c8cc02565g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An interesting organocascade reaction was developed to provide privileged epoxy-bridged azaheterocyclic skeletons.
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Affiliation(s)
- Ramani Gurubrahamam
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | - Koppanathi Nagaraju
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | - Kwunmin Chen
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
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18
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Yamashita Y, Yasukawa T, Yoo WJ, Kitanosono T, Kobayashi S. Catalytic enantioselective aldol reactions. Chem Soc Rev 2018; 47:4388-4480. [DOI: 10.1039/c7cs00824d] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent developments in catalytic asymmetric aldol reactions have been summarized.
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Affiliation(s)
- Yasuhiro Yamashita
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Tomohiro Yasukawa
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Woo-Jin Yoo
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Taku Kitanosono
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Shū Kobayashi
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
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19
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Liu XL, Zhang XL, Xia AB, Guo YJ, Meng CH, Xu DQ. Tryptophan/copper-catalyzed aromatization reaction of chiral cyclohexanones to phenols. Org Biomol Chem 2017; 15:5126-5130. [PMID: 28594034 DOI: 10.1039/c7ob01114h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
By merging organocatalysis with copper catalysis, a highly efficient stereospecific approach for the synthesis of chiral phenols from cyclohexanones has been developed for the first time. The aromatization reaction proceeds through the in situ formation of enone intermediates and further subsequent bromination/dehydrobromination reactions. And a series of functionalized phenol derivatives are obtained in good yields (up to 89%) and good to excellent enantioselectivities (up to 99% ee).
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Affiliation(s)
- Xue-Li Liu
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China.
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Huang H, Zhang X, Yu C, Li X, Zhang Y, Wang W. Highly Regio- and Stereoselective Synthesis of Z and E Enol Esters by an Amine-Catalyzed Conjugate Addition–Rearrangement Reaction of Ynals with Carboxylic Acids. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02206] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- He Huang
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Xinshuai Zhang
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Chenguang Yu
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Xiangmin Li
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
- State Key Laboratory of Bioengineering Reactor, Shanghai Key Laboratory of New Drug Design, Shanghai Key Laboratory of Chemical Biology, and School of Pharmacy, East China University of Science & Technology, Shanghai 200237, People’s Republic of China
| | - Yueteng Zhang
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Wei Wang
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
- State Key Laboratory of Bioengineering Reactor, Shanghai Key Laboratory of New Drug Design, Shanghai Key Laboratory of Chemical Biology, and School of Pharmacy, East China University of Science & Technology, Shanghai 200237, People’s Republic of China
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21
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Afewerki S, Córdova A. Combinations of Aminocatalysts and Metal Catalysts: A Powerful Cooperative Approach in Selective Organic Synthesis. Chem Rev 2016; 116:13512-13570. [PMID: 27723291 DOI: 10.1021/acs.chemrev.6b00226] [Citation(s) in RCA: 322] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The cooperation and interplay between organic and metal catalyst systems is of utmost importance in nature and chemical synthesis. Here innovative and selective cooperative catalyst systems can be designed by combining two catalysts that complement rather than inhibit one another. This refined strategy can permit chemical transformations unmanageable by either of the catalysts alone. This review summarizes innovations and developments in selective organic synthesis that have used cooperative dual catalysis by combining simple aminocatalysts with metal catalysts. Considerable efforts have been devoted to this fruitful field. This emerging area employs the different activation modes of amine and metal catalysts as a platform to address challenging reactions. Here, aminocatalysis (e.g., enamine activation catalysis, iminium activation catalysis, single occupied molecular orbital (SOMO) activation catalysis, and photoredox activation catalysis) is employed to activate unreactive carbonyl substrates. The transition metal catalyst complements by activating a variety of substrates through a range of interactions (e.g., electrophilic π-allyl complex formation, Lewis acid activation, allenylidene complex formation, photoredox activation, C-H activation, etc.), and thereby novel concepts within catalysis are created. The inclusion of heterogeneous catalysis strategies allows for "green" chemistry development, catalyst recyclability, and the more eco-friendly synthesis of valuable compounds.
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Affiliation(s)
- Samson Afewerki
- Department of Natural Sciences, Mid Sweden University , SE-851 70 Sundsvall, Sweden.,Berzelii Center EXSELENT, The Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Armando Córdova
- Department of Natural Sciences, Mid Sweden University , SE-851 70 Sundsvall, Sweden.,Berzelii Center EXSELENT, The Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
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22
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Matsumoto Y, Hibino K, Yonaga M, Kakeya H, Hayashi Y. Enantioselective Total Synthesis of RQN-18690A (18-Deoxyherboxidiene). Org Lett 2016; 18:3382-5. [PMID: 27377811 DOI: 10.1021/acs.orglett.6b01524] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first total synthesis of RQN-18690A (18-deoxyherboxidiene) and the determination of its absolute stereochemical configuration are described. The synthesis features an organocatalytic aldol reaction for the first step, 1,4- and 1,2- dual reductions of α,β-unsaturated δ-lactone followed by a domino reaction in a one-pot operation, and diastereoselective epoxidation with kinetic resolution.
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Affiliation(s)
- Yasunobu Matsumoto
- Graduate School of Pharmaceutical Sciences, University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Discovery Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
| | - Kazuhiro Hibino
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science , Kagurazaka Shinjuku-ku, Tokyo 162-8601, Japan
| | - Masahiro Yonaga
- Graduate School of Pharmaceutical Sciences, University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Discovery Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
| | - Hideaki Kakeya
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences, Kyoto University , Sakyo-ku, Kyoto 606-8501, Japan.,Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aramaki-Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
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23
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Echave H, López R, Palomo C. Bifunctional Brønsted Base Catalyzes Direct Asymmetric Aldol Reaction of α-Keto Amides. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510482] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haizea Echave
- Departamento de Química Orgánica I, Facultad de Químicas; Universidad del País Vasco; Apdo. 1072 20080 San Sebastián Spain
| | - Rosa López
- Departamento de Química Orgánica I, Facultad de Químicas; Universidad del País Vasco; Apdo. 1072 20080 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Químicas; Universidad del País Vasco; Apdo. 1072 20080 San Sebastián Spain
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24
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Echave H, López R, Palomo C. Bifunctional Brønsted Base Catalyzes Direct Asymmetric Aldol Reaction of α-Keto Amides. Angew Chem Int Ed Engl 2016; 55:3364-8. [DOI: 10.1002/anie.201510482] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/08/2016] [Indexed: 12/24/2022]
Affiliation(s)
- Haizea Echave
- Departamento de Química Orgánica I, Facultad de Químicas; Universidad del País Vasco; Apdo. 1072 20080 San Sebastián Spain
| | - Rosa López
- Departamento de Química Orgánica I, Facultad de Químicas; Universidad del País Vasco; Apdo. 1072 20080 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Químicas; Universidad del País Vasco; Apdo. 1072 20080 San Sebastián Spain
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25
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Xiu W, Zhenhua W, Zhang G, Zhang W, Wu Y, Gao Z. Tunable Titanocene Lewis Acid Catalysts for Selective Friedel-Crafts Reaction of Indoles andN-Sulfonylaldimines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501122] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Queensen MJ, Rabus JM, Bauer EB. Ferrocenium hexafluorophosphate as an inexpensive, mild catalyst for the etherification of propargylic alcohols. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.06.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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27
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Saya JM, Vos K, Kleinnijenhuis RA, van Maarseveen JH, Ingemann S, Hiemstra H. Total Synthesis of Aquatolide. Org Lett 2015; 17:3892-4. [PMID: 26186274 DOI: 10.1021/acs.orglett.5b01888] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A total synthesis of the sesquiterpene lactone aquatolide has been accomplished. The central step is an intramolecular [2 + 2]-photocycloaddition of an allene onto an α,β-unsaturated δ-lactone. Other key steps are an intramolecular Horner-Wadsworth-Emmons reaction to close the lactone and an intramolecular Mukaiyama-type aldol reaction to cyclize the eight-membered ring. Racemic aquatolide has been resolved using preparative HPLC.
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Affiliation(s)
- Jordy M Saya
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Klaas Vos
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Roel A Kleinnijenhuis
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Jan H van Maarseveen
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Steen Ingemann
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Henk Hiemstra
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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28
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Abstract
This review focuses on enantioselective cooperative catalytic reactions, wherein two catalysts work simultaneously to form products which cannot be obtained by the use of a single catalyst alone, which have attracted considerable attention in recent years.
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Affiliation(s)
- Suleman M. Inamdar
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Valmik S. Shinde
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Nitin T. Patil
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
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García JM, Odriozola JM, Razkin J, Lapuerta I, Odriozola A, Urruzuno I, Vera S, Oiarbide M, Palomo C. Catalytic Enantioselective Quick Route to Aldol-Tethered 1,6- and 1,7-Enynes from ω-Unsaturated Aldehydes. Chemistry 2014; 20:15543-54. [DOI: 10.1002/chem.201404452] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Indexed: 11/07/2022]
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30
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Wu Y, Chen C, Jia G, Zhu X, Sun H, Zhang G, Zhang W, Gao Z. Salicylato Titanocene Complexes as Cooperative Organometallic Lewis Acid and Brønsted Acid Catalysts for Three-Component Mannich Reactions. Chemistry 2014; 20:8530-5. [DOI: 10.1002/chem.201402438] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Indexed: 11/05/2022]
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31
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Alkhaleeli DF, Baum KJ, Rabus JM, Bauer EB. Etherification reactions of propargylic alcohols catalyzed by a cationic ruthenium allenylidene complex. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2014.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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32
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Deng Y, Kumar S, Wang H. Synergistic–cooperative combination of enamine catalysis with transition metal catalysis. Chem Commun (Camb) 2014; 50:4272-84. [DOI: 10.1039/c4cc00072b] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review article highlights recent discoveries in synergistic–cooperative combination of enamine catalysis with transition metal catalysis.
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Affiliation(s)
- Yongming Deng
- Department of Chemistry and Biochemistry
- Miami University
- Oxford, USA
| | - Siddhartha Kumar
- Department of Chemistry and Biochemistry
- Miami University
- Oxford, USA
| | - Hong Wang
- Department of Chemistry and Biochemistry
- Miami University
- Oxford, USA
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