1
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Wang Y, Xu P, Xie W, Wang S, Chen Y, Yu N, Zhang S. Exploration of active sites of ethyl alcohol electro-oxidation on porous gold nanoparticles with enhanced Raman spectroscopy. RSC Adv 2023; 13:1333-1338. [PMID: 36686900 PMCID: PMC9811239 DOI: 10.1039/d2ra03863c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 12/05/2022] [Indexed: 01/05/2023] Open
Abstract
Novel porous gold nanospheres are prepared by calcination of the gold-urea complexes. The enhanced Raman spectra of ethanol catalyzed by different doses of porous gold nanospheres are measured with a 532 nm laser as the excitation source, and an enhanced charge coupled device served in spectral detection and microscopic imaging. The electrochemical experiments show that the catalytic oxidation products of ethanol with porous gold nanoparticles are acetaldehyde, acetic acid, and water, which further proved that the porous gold nanoparticles can activate the -CH2 of ethanol.
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Affiliation(s)
- Yusong Wang
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Peng Xu
- Anhui Normal UniversityWuhu 241002P. R. China
| | - Wenjie Xie
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Shaozhen Wang
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Yunyan Chen
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Nan Yu
- Anhui Normal UniversityWuhu 241002P. R. China
| | - Shengpeng Zhang
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
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2
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Zhao H, Hu B, Xu L, Walsh PJ. Palladium-catalyzed benzylic C(sp 3)-H carbonylative arylation of azaarylmethyl amines with aryl bromides. Chem Sci 2021; 12:10862-10870. [PMID: 34476065 PMCID: PMC8372623 DOI: 10.1039/d1sc02078a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/06/2021] [Indexed: 01/08/2023] Open
Abstract
A highly selective palladium-catalyzed carbonylative arylation of weakly acidic benzylic C(sp3)-H bonds of azaarylmethylamines with aryl bromides under 1 atm of CO gas has been achieved. This work represents the first examples of use of such weakly acidic pronucleophiles in this class of transformations. In the presence of a NIXANTPHOS-based palladium catalyst, this one-pot cascade process allows a range of azaarylmethylamines containing pyridyl, quinolinyl and pyrimidyl moieties and acyclic and cyclic amines to undergo efficient reactions with aryl bromides and CO to provide α-amino aryl-azaarylmethyl ketones in moderate to high yields with a broad substrate scope and good tolerance of functional groups. This reaction proceeds via in situ reversible deprotonation of the benzylic C-H bonds to give the active carbanions, thereby avoiding prefunctionalized organometallic reagents and generation of additional waste. Importantly, the operational simplicity, scalability and diversity of the products highlight the potential applicability of this protocol.
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Affiliation(s)
- Haoqiang Zhao
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Bowen Hu
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Lijin Xu
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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3
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Chintawar CC, Yadav AK, Kumar A, Sancheti SP, Patil NT. Divergent Gold Catalysis: Unlocking Molecular Diversity through Catalyst Control. Chem Rev 2021; 121:8478-8558. [PMID: 33555193 DOI: 10.1021/acs.chemrev.0c00903] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The catalyst-directed divergent synthesis, commonly termed as "divergent catalysis", has emerged as a promising technique as it allows chartering of structurally distinct products from common substrates simply by modulating the catalyst system. In this regard, gold complexes emerged as powerful catalysts as they offer unique reactivity profiles as compared to various other transition metal catalysts, primarily due to their salient electronic and geometrical features. Owing to the tunable soft π-acidic nature, gold catalysts not only evolved as superior contenders for catalyzing the reactions of alkynes, alkenes, and allenes but also, more intriguingly, have been found to provide divergent reaction pathways over other π-acid catalysts such as Ag, Pt, Pd, Rh, Cu, In, Sc, Hg, Zn, etc. The recent past has witnessed a renaissance in such examples wherein, by choosing gold catalysts over other transition metal catalysts or by fine-tuning the ligands, counteranions or oxidation states of the gold catalyst itself, a complete reactivity switch was observed. However, reviews documenting such examples are sporadic; as a result, most of the reports of this kind remained scattered in the literature, thereby hampering further development of this burgeoning field. By conceptualizing the idea of "Divergent Gold Catalysis (DGC)", this review aims to consolidate all such reports and provide a unified approach necessary to pave the way for further advancement of this exciting area. Based on the factors governing the divergence in product formation, an explicit classification of DGC has been provided. To gain a fundamental understanding of the divergence in observed reactivities and selectivities, the review is accompanied by mechanistic insights at appropriate places.
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Affiliation(s)
- Chetan C Chintawar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Amit K Yadav
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Anil Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Shashank P Sancheti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
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4
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Zhu B, Zhu L, Xia J, Huang S, Huang X. Gold-catalyzed cycloisomerization of enynamides: Regio- and stereoselective approach to tetracyclic spiroindolines. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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5
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Campeau D, León Rayo DF, Mansour A, Muratov K, Gagosz F. Gold-Catalyzed Reactions of Specially Activated Alkynes, Allenes, and Alkenes. Chem Rev 2020; 121:8756-8867. [DOI: 10.1021/acs.chemrev.0c00788] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Dominic Campeau
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - David F. León Rayo
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - Ali Mansour
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - Karim Muratov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
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6
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Rahman MM, Li G, Szostak M. Metal-Free Transamidation of Secondary Amides by N–C Cleavage. J Org Chem 2019; 84:12091-12100. [DOI: 10.1021/acs.joc.9b02013] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Md. Mahbubur Rahman
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Guangchen Li
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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7
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Habert L, Sallio R, Durandetti M, Gosmini C, Gillaizeau I. Zinc Chloride Mediated Synthesis of
3H
‐Oxazol‐2‐one and Pyrrolo‐oxazin‐1‐one from Ynamide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900428] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
| | - Romain Sallio
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
| | - Muriel Durandetti
- Normandie Univ, UNIROUEN NSA Rouen, CNRS, COBRA (UMR 6014& FR 3038) 76000 Rouen France
| | - Corinne Gosmini
- Laboratoire de Chimie Moléculaire CNRS, Ecole polytechnique, IPParis 91128 Palaiseau France
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
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8
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Wei T, Zeng Y, He W, Geng L, Hong L. A facile transformation of alkynes into α-amino ketones by an N-bromosuccinimide-mediated one-pot strategy. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.03.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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9
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Okamoto N, Yanada R, Sueda T. Synthesis of Tricyclic Isoindolones via Nickel‐Catalyzed Decyclization–Addition–Cyclization of α‐Hydroxy Ynamides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Noriko Okamoto
- Faculty of Pharmaceutical Sciences Hiroshima International University 5‐1‐1 Hirokoshingai, Kure 737‐0112 Hiroshima Japan
| | - Reiko Yanada
- Faculty of Pharmaceutical Sciences Hiroshima International University 5‐1‐1 Hirokoshingai, Kure 737‐0112 Hiroshima Japan
| | - Takuya Sueda
- Faculty of Pharmaceutical Sciences Hiroshima International University 5‐1‐1 Hirokoshingai, Kure 737‐0112 Hiroshima Japan
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10
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Muneeswara M, Muthukumar A, Sekar G. Dual Role of N-Bromosuccinimide as Oxidant and Succinimide Surrogate in Domino One-Pot Oxidative Amination of Benzyl Alcohols for the Synthesis of α-Imido Ketones. ChemistrySelect 2018. [DOI: 10.1002/slct.201803465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Madithedu Muneeswara
- Department of Chemistry; Indian Institution of Technology Madras Chennai-600036, Tamilnadu; India
| | - Alagesan Muthukumar
- Department of Chemistry; Indian Institution of Technology Madras Chennai-600036, Tamilnadu; India
| | - Govindasamy Sekar
- Department of Chemistry; Indian Institution of Technology Madras Chennai-600036, Tamilnadu; India
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11
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Beltran F, Fabre I, Ciofini I, Miesch L. Direct Spirocyclization from Keto-sulfonamides: An Approach to Azaspiro Compounds. Org Lett 2017; 19:5042-5045. [PMID: 28929765 DOI: 10.1021/acs.orglett.7b02216] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Spontaneous spirocyclization of keto-sulfonamides via ynamides through a one-pot process is presented. Push-pull ynamides were obtained through Michael addition/elimination without Cu. The obtained azaspiro compounds are building blocks for indole alkaloids. Theoretical studies provide insights into the mechanism of the formal Conia-ene reaction.
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Affiliation(s)
- Frédéric Beltran
- Laboratoire de Chimie Organique Synthétique, Institut de Chimie, CNRS-UdS UMR 7177 , 4, rue Blaise Pascal CS 90032, 67081 Strasbourg, France
| | - Indira Fabre
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP) , 75005 Paris, France.,Département de chimie, École Normale Supérieure, PSL Research University, Sorbonne Universités, UPMC Univ. , Paris 06, CNRS, 75005 Paris, France
| | - Ilaria Ciofini
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP) , 75005 Paris, France
| | - Laurence Miesch
- Laboratoire de Chimie Organique Synthétique, Institut de Chimie, CNRS-UdS UMR 7177 , 4, rue Blaise Pascal CS 90032, 67081 Strasbourg, France
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12
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Sallio R, Corpet M, Habert L, Durandetti M, Gosmini C, Gillaizeau I. Cobalt-Catalyzed Carbozincation of Ynamides. J Org Chem 2017; 82:1254-1259. [DOI: 10.1021/acs.joc.6b02612] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Romain Sallio
- Institute
of Organic and Analytical Chemistry, ICOA UMR 7311 CNRS, Université d’Orléans, rue de Chartres, 45100 Orléans, France
| | - Martin Corpet
- LCM,
CNRS, Ecole polytechnique, Université Paris Saclay, 91128 Palaiseau Cedex, France
| | - Loic Habert
- Institute
of Organic and Analytical Chemistry, ICOA UMR 7311 CNRS, Université d’Orléans, rue de Chartres, 45100 Orléans, France
| | - Muriel Durandetti
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA
(UMR 6014), 76000 Rouen, France
| | - Corinne Gosmini
- LCM,
CNRS, Ecole polytechnique, Université Paris Saclay, 91128 Palaiseau Cedex, France
| | - Isabelle Gillaizeau
- Institute
of Organic and Analytical Chemistry, ICOA UMR 7311 CNRS, Université d’Orléans, rue de Chartres, 45100 Orléans, France
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13
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Yu Y, Chen G, Zhu L, Liao Y, Wu Y, Huang X. Gold-Catalyzed β-Regioselective Formal [3 + 2] Cycloaddition of Ynamides with Pyrido[1,2-b]indazoles: Reaction Development and Mechanistic Insights. J Org Chem 2016; 81:8142-54. [PMID: 27569125 DOI: 10.1021/acs.joc.6b01948] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yinghua Yu
- Key
Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Yangqiao West Road 155#, Fuzhou, Fujian 350002, China
| | - Gui Chen
- Key
Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Yangqiao West Road 155#, Fuzhou, Fujian 350002, China
| | - Lei Zhu
- Key
Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Yangqiao West Road 155#, Fuzhou, Fujian 350002, China
| | - Yun Liao
- Key
Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Yangqiao West Road 155#, Fuzhou, Fujian 350002, China
- College
of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Yufeng Wu
- Key
Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Yangqiao West Road 155#, Fuzhou, Fujian 350002, China
- College
of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Xueliang Huang
- Key
Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Yangqiao West Road 155#, Fuzhou, Fujian 350002, China
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14
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Sueda T, Okamoto N, Yanada R. Copper-Catalyzed Tandem Decyclization-Cyclization Reaction of N-Alkynyl-3-hydroxyisoindolin-1-ones Generated from N-Alkynyl Phthalimides: Selective Synthesis of ortho-(2-Oxazolyl)phenyl Ketones. J Org Chem 2016; 81:5745-51. [DOI: 10.1021/acs.joc.6b00888] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takuya Sueda
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Noriko Okamoto
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Reiko Yanada
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
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15
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Heinrich CF, Fabre I, Miesch L. Silver-Catalyzed 7-exo-
dig Cyclization of Silylenolether-ynesulfonamides. Angew Chem Int Ed Engl 2016; 55:5170-4. [DOI: 10.1002/anie.201510708] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/05/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Clément F. Heinrich
- Laboratoire de Chimie Organique Synthétique; Institut de Chimie; 1, rue Blaise Pascal, BP296/R8 67008 Strasbourg France
| | - Indira Fabre
- Département de Chimie, Ecole Normale Supérieure-PSL Research University; Sorbonne Universités-UPMC Univ Paris 06, CNRS UMR 8640 PASTEUR; 24, rue Lhomond 75005 Paris France
| | - Laurence Miesch
- Laboratoire de Chimie Organique Synthétique; Institut de Chimie; 1, rue Blaise Pascal, BP296/R8 67008 Strasbourg France
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16
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Heinrich CF, Fabre I, Miesch L. Silver-Catalyzed 7-exo-
dig Cyclization of Silylenolether-ynesulfonamides. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510708] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Clément F. Heinrich
- Laboratoire de Chimie Organique Synthétique; Institut de Chimie; 1, rue Blaise Pascal, BP296/R8 67008 Strasbourg France
| | - Indira Fabre
- Département de Chimie, Ecole Normale Supérieure-PSL Research University; Sorbonne Universités-UPMC Univ Paris 06, CNRS UMR 8640 PASTEUR; 24, rue Lhomond 75005 Paris France
| | - Laurence Miesch
- Laboratoire de Chimie Organique Synthétique; Institut de Chimie; 1, rue Blaise Pascal, BP296/R8 67008 Strasbourg France
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17
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Shinde MH, Kshirsagar UA. N-Bromosuccinimide promoted and base switchable one pot synthesis of α-imido and α-amino ketones from styrenes. Org Biomol Chem 2016; 14:858-61. [DOI: 10.1039/c5ob02034d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
An N-Bromosuccinimide (NBS) promoted one pot strategy for the synthesis of α-amino functionalized aryl ketones starting from commercially available styrenes has been developed.
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Affiliation(s)
- Mahesh H. Shinde
- Department of Chemistry
- Savitribai Phule Pune University (Formerly: University of Pune)
- Pune-411007
- India
| | - Umesh A. Kshirsagar
- Department of Chemistry
- Savitribai Phule Pune University (Formerly: University of Pune)
- Pune-411007
- India
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18
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Du BX, Quan ZJ, Da YX, Zhang Z, Wang XC. Chemo-Controlled Cross-Coupling of Di(hetero)aryl Disulfides with Grignard Reagents: CCvs.CS Bond Formation. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400980] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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19
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Laouiti A, Couty F, Marrot J, Boubaker T, Rammah MM, Rammah MB, Evano G. Exploring the Anionic Reactivity of Ynimines, Useful Precursors of Metalated Ketenimines. Org Lett 2014; 16:2252-5. [DOI: 10.1021/ol500749h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Anouar Laouiti
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, 45, Avenue des Etats-Unis, 78035 Versailles Cedex, France
- Laboratoire
de Chimie Hétérocyclique, Produits Naturels et Réactivité,
Département de Chimie, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019 Monastir, Tunisia
| | - François Couty
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, 45, Avenue des Etats-Unis, 78035 Versailles Cedex, France
| | - Jérome Marrot
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, 45, Avenue des Etats-Unis, 78035 Versailles Cedex, France
| | - Taoufik Boubaker
- Laboratoire
de Chimie Hétérocyclique, Produits Naturels et Réactivité,
Département de Chimie, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019 Monastir, Tunisia
| | - Mohamed M. Rammah
- Laboratoire
de Chimie Hétérocyclique, Produits Naturels et Réactivité,
Département de Chimie, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019 Monastir, Tunisia
| | - Mohamed B. Rammah
- Laboratoire
de Chimie Hétérocyclique, Produits Naturels et Réactivité,
Département de Chimie, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019 Monastir, Tunisia
| | - Gwilherm Evano
- Laboratoire
de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
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20
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Wang XN, Yeom HS, Fang LC, He S, Ma ZX, Kedrowski BL, Hsung RP. Ynamides in ring forming transformations. Acc Chem Res 2014; 47:560-78. [PMID: 24164363 DOI: 10.1021/ar400193g] [Citation(s) in RCA: 462] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The ynamide functional group activates carbon-carbontriple bonds through an attached nitrogen atom that bears an electron-withdrawing group. As a result, the alkyne has both electrophilic and nucleophilic properties. Through the selection of the electron-withdrawing group attached to nitrogen, chemists can modulate the electronic properties and reactivity of ynamides, making these groups versatile synthetic building blocks. The reactions of ynamides also lead directly to nitrogen-containing products, which provides access to important structural motifs found in natural products and molecules of medicinal interest. Therefore, researchers have invested increasing time and research in the chemistry of ynamides in recent years. This Account surveys and assesses new organic transforma-tions involving ynamides developed in our laboratory and in others around the world. We showcase the synthetic power of ynamides for rapid assembly of complex molecular structures. Among the recent reports of ynamide transformations, ring-forming reactions provide a powerful tool for generating molecular complexity quickly. In addition to their synthetic utility, such reactions are mechanistically interesting. Therefore, we focus primarily on the cyclization chemistry of ynamides. This Account highlights ynamide reactions that are useful in the rapid synthesis of cyclic and polycyclic structural manifolds. We discuss the mechanisms active in the ring formations and describe representative examples that demonstrate the scope of these reactions and provide mechanistic insights. In this discussion, we feature examples of ynamide reactions involving radical cyclizations, ring-closing metathesis, transition metal and non-transition metal mediated cyclizations, cycloaddition reactions, and rearrangements. The transformations presented rapidly introduce structural complexity and include nitrogen within or in close proximity to a newly formed ring (or rings). Thus, ynamides have emerged as powerful synthons for nitrogen-containing heterocycles and nitrogen-substituted rings, and we hope this Account will promote continued interest in the chemistry of ynamides.
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Affiliation(s)
- Xiao-Na Wang
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Hyun-Suk Yeom
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Li-Chao Fang
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Shuzhong He
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Zhi-Xiong Ma
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Brant L. Kedrowski
- Department of Chemistry, University of Wisconsin, Oshkosh, Wisconsin 54901, United States
| | - Richard P. Hsung
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, United States
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Qiu Y, Ma D, Kong W, Fu C, Ma S. Regiocontrolled 1,2-migration in cyclization of 1-(indol-2-yl)-3-alkyn-1-ols: (Ph3P)Au+vs. PtCl4. Org Chem Front 2014. [DOI: 10.1039/c3qo00006k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Wang XN, Hsung RP, Fox SK, Lv MC, Qi R. SYNTHESIS OF DE NOVO CHIRAL γ-AMINO-YNAMIDES USING LITHIATED YNAMIDES. OBSERVATION OF A UNIQUE 5- ENDO-DIG CYCLIZATION WITH AN INVERSION OF S-CENTER. HETEROCYCLES 2014; 88:1233-1254. [PMID: 24791059 PMCID: PMC4002055 DOI: 10.3987/com-13-s(s)88] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We describe herein details of our efforts in developing a highly stereoselective synthesis of de novo chiral γ-amino-ynamides through additions of lithiated ynamides to Ellman-Davis chiral N-tert-butanesulfinyl imines. While additions of ynamides could be highly stereoselective even without Lewis acids, the use of BF3-OEt2 completely reversed the stereoselectivity. On the other hand, additions of oxazolidinone-substituted, oxazinanone-substituted and tetrahydropyrimidinone-substituted ynamides behaved quite differently and functioned better with BF3-OEt2. The chirality of the oxazolidinone ring exerts no impact on the selectivity. This work also features a unique 5-endo-dig cyclization of oxazolidinone-substituted γ-amino-ynamides that could be promoted with acid, leading to isothiazoles and 2,3-dihydro-isothiazole S-oxides.
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Wang XN, Winston-McPherson GN, Walton MC, Zhang Y, Hsung RP, DeKorver KA. Synthesis of cyclopentenimines from N-allyl ynamides via a tandem aza-Claisen rearrangement-carbocyclization sequence. J Org Chem 2013; 78:6233-44. [PMID: 23718841 DOI: 10.1021/jo400960e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We describe here details of our investigations into Pd-catalyzed and thermal aza-Claisen-carbocyclizations of N-allyl ynamides to prepare a variety of α,β-unsaturated cyclopentenimines. The nature of the ynamide electron-withdrawing group and β-substituent plays critical roles in the success of this tandem cascade. With N-sulfonyl ynamides, the use of palladium catalysis is required, as facile 1,3-sulfonyl shifts dominate under thermal conditions. However, since no analogous 1,3-phosphoryl shift is operational, N-phosphoryl ynamides could be used to prepare similar cyclopentenimines under thermal conditions through zwitter ionic intermediates that undergo N-promoted H-shifts. Alternatively, by employing ynamides bearing tethered carbon nucleophiles, the zwitter ionic intermediates could be intercepted, giving rise rapidly to more complex fused bi- and tricyclic scaffolds.
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Affiliation(s)
- Xiao-Na Wang
- Division of Pharmaceutical Sciences and Department of Chemistry, 777 Highland Avenue, University of Wisconsin, Madison, Wisconsin 53705-2222, United States
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Wang XN, Hsung RP, Qi R, Fox SK, Lv MC. A highly stereoselective addition of lithiated ynamides to Ellman-Davis chiral N-tert-butanesulfinyl imines. Org Lett 2013; 15:2514-7. [PMID: 23646900 DOI: 10.1021/ol400989x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A highly diastereoselective addition of lithiated ynamides to Ellman-Davis chiral imines is described. While additions of N-sulfonyl ynamides are highly stereoselective even without Lewis acids, the use of BF3-OEt2 completely reversed the stereoselectivity. In addition, oxazolidinone-substituted ynamides behaved differently and functioned better with BF3-OEt2, and the chirality of the oxazolidinone ring exerts no impact on the selectivity.
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Affiliation(s)
- Xiao-Na Wang
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin , Madison, Wisconsin 53705, United States
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