1
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Brom J, Maruani A, Turcaud S, Lajnef S, Peyrot F, Micouin L, Benedetti E. [2.2]Paracyclophane-based coumarins: effective organo-photocatalysts for light-induced desulfonylation processes. Org Biomol Chem 2023; 22:59-64. [PMID: 38032276 DOI: 10.1039/d3ob01711g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Herein, we demonstrate for the first time that coumarins derived from [2.2]paracyclophane (pCp) can act as effective organo-photocatalysts and promote the reductive cleavage of sulfonamides under light-irradiation. In the presence of these original compounds, photodesulfonylation reactions occur under mild conditions at low catalyst loadings in the presence of Hantzsch ester. Theoretical and experimental investigations are described, which elucidate the reaction mechanism and the nature of the active species involved in the photocatalytic process. This proof-of-concept study paves the way for further application of pCps in the field of photocatalysis.
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Affiliation(s)
- Jules Brom
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, F-75006 Paris, France.
| | - Antoine Maruani
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, F-75006 Paris, France.
| | - Serge Turcaud
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, F-75006 Paris, France.
| | - Sonia Lajnef
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, F-75006 Paris, France.
| | - Fabienne Peyrot
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, F-75006 Paris, France.
- Sorbonne-Université, Institut National Supérieur du Professorat et de l'Education (INSPE) de l'Académie de Paris, F-75016 Paris, France
| | - Laurent Micouin
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, F-75006 Paris, France.
| | - Erica Benedetti
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, F-75006 Paris, France.
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2
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Sergeev PG, Novikov RA, Tomilov YV. Lewis Acid-Catalyzed Formal (4+2)-Cycloaddition between Cross-Conjugated Azatrienes and Styrylmalonates: The Way to Functionalized Quinolizidine Precursors. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010088. [PMID: 36615287 PMCID: PMC9822494 DOI: 10.3390/molecules28010088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/01/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Quinolizidine and azaphenalene alkaloids are common in nature and exhibit a pharmaceutical activity, which stirs up increased interest in expanding the range of methods for the synthesis of the corresponding derivatives. In this work, we attempted to adapt our previously presented method for the synthesis of tetrahydropyridines to the preparation of potential precursors for these heterocycles as a separate development of a necessary intermediate stage. To this end, we studied the reactions of β-styrylmalonates with N-protected cross-conjugated azatrienes in the presence of Sn(OTf)2. Moreover, the regioselectivity of the process involving unsymmetrically substituted azatrienes was estimated. The diene character of vinyltetrahydropyridines was studied in detail with the participation of PTAD. Finally, for the Ts-protected highly functionalized vinyltetrahydropyridines synthesized, a detosylation method to give new desired azadiene structures as precursors of the quinolizidine core was suggested.
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Affiliation(s)
| | - Roman A. Novikov
- Correspondence: (R.A.N.); (Y.V.T.); Tel.: +7-(919)-727-5362 (R.A.N.); Fax: +7-(495)-135-6390 (Y.V.T.)
| | - Yury V. Tomilov
- Correspondence: (R.A.N.); (Y.V.T.); Tel.: +7-(919)-727-5362 (R.A.N.); Fax: +7-(495)-135-6390 (Y.V.T.)
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3
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Chen H, Wu ZZ, Shao DY, Huang PQ. Multicatalysis protocol enables direct and versatile enantioselective reductive transformations of secondary amides. SCIENCE ADVANCES 2022; 8:eade3431. [PMID: 36417504 PMCID: PMC9683713 DOI: 10.1126/sciadv.ade3431] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
The catalytic asymmetric geminal bis-nucleophilic addition to nonreactive functional groups is a type of highly desirable yet challenging transformation in organic chemistry. Here, we report the first catalytic asymmetric reductive/deoxygenative alkynylation of secondary amides. The method is based on a multicatalysis strategy that merges iridium/copper relay catalysis with organocatalysis. A further combination with the palladium-catalyzed alkyne hydrogenation allows the one-pot enantioselective reductive alkylation of secondary amides. This versatile protocol allows the efficient synthesis of four types of α-branched chiral amines, which are prevalent structural motifs of active pharmaceutical ingredients. The protocol also features excellent enantioselectivity, chemoselectivity, and functional group tolerance to be compatible with more reactive functional groups such as ketone and aldehyde. The synthetic utility of the method was further demonstrated by the late-stage functionalization of two drug derivatives and the concise, first catalytic asymmetric approach to the κ-opioid antagonist aticaprant.
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4
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Pfeffer C, Probst P, Wannenmacher N, Frey W, Peters R. Direct Enantioselective Addition of Alkynes to Imines by a Highly Efficient Palladacycle Catalyst. Angew Chem Int Ed Engl 2022; 61:e202206835. [PMID: 35701311 PMCID: PMC9545068 DOI: 10.1002/anie.202206835] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Indexed: 11/12/2022]
Abstract
Enantiopure propargylic amines are highly valuable synthetic building blocks. Much effort has been devoted to develop methods for their preparation. The arguably most important strategy is the 1,2-addition of alkynes to imines. Despite remarkable progress, the known methods using Zn and Cu catalysts suffer from the need for high catalyst loadings, typically ranging from 2-60 mol % for neutral aldimine substrates. Here we report a planar chiral Pd complex acting as very efficient catalyst for direct asymmetric alkyne additions to imines, requiring very low catalyst loadings. Turnover numbers of up to 8700 were accomplished. Our investigation suggests that a Pd-acetylide complex is generated as a catalytically relevant intermediate by the aid of an acac ligand acting as internal catalytic base. It is shown that the catalyst is quite stable under the reaction conditions and that product inhibition is not an issue. A total of 39 examples is shown which all yielded almost enantiopure products.
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Affiliation(s)
- Camilla Pfeffer
- Universität StuttgartInstitut für Organische ChemiePfaffenwaldring 5570569StuttgartGermany
| | - Patrick Probst
- Universität StuttgartInstitut für Organische ChemiePfaffenwaldring 5570569StuttgartGermany
| | - Nick Wannenmacher
- Universität StuttgartInstitut für Organische ChemiePfaffenwaldring 5570569StuttgartGermany
| | - Wolfgang Frey
- Universität StuttgartInstitut für Organische ChemiePfaffenwaldring 5570569StuttgartGermany
| | - René Peters
- Universität StuttgartInstitut für Organische ChemiePfaffenwaldring 5570569StuttgartGermany
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5
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Abstract
The multicomponent reaction of aldehydes, amines, and alkynes, known as A3 coupling, yields propargylamines, a valuable organic scaffold, and has received significant interest and attention in the last years. In order to fully realise the potential of the metal-based catalytic protocols that facilitate this transformation, we summarise substrates, in situ and well-characterised synthetic methods that provide this scaffold and attempt a monumental classification considering several variables (Metal, Coordinating atom(s), Ligand type and name, in-situ or well-characterised, co-catalyst, catalyst and ligand Loading (mol%), solvent, volume, atmosphere, temperature, microwave, time, yield, selectivity (e.e. d.r.), substrate name, functionality, loading (amines, aldehydes, alkynes), and use of molecular sieves). This pioneering work creates a valuable database that contains 2376 entries and allows us to produce graphs and better visualise their impact on the reaction.
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6
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Pfeffer C, Probst P, Wannenmacher N, Frey W, Peters R. Direct Enantioselective Addition of Alkynes to Imines by a Highly Efficient Palladacycle Catalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Camilla Pfeffer
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 D-70569 Stuttgart GERMANY
| | - Patrick Probst
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie GERMANY
| | - Nick Wannenmacher
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 D-70569 Stuttgart GERMANY
| | - Wolfgang Frey
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 D-70569 Stuttgart GERMANY
| | - René Peters
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55Raum 06.301 70569 Stuttgart GERMANY
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7
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Man N, Li Y, Jie J, Li H, Yang H, Zhao Y, Fu H. Synthesis of Chiral Propargylamines, Chiral 1,2-Dihydronaphtho[2,1-b]furans and Naphtho[2,1-b]furans with C-Alkynyl N,N'-di-(tert-butoxycarbonyl)-aminals and β-Naphthols. Chemistry 2021; 27:12884-12889. [PMID: 34133047 DOI: 10.1002/chem.202102040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Indexed: 12/21/2022]
Abstract
Chiral phosphoric acid-catalyzed couplings of C-alkynyl N,N'-di-(tert-butoxycarbonyl)-aminals with β-naphthols led to chiral propargylamines in moderate to high yields with high to excellent enantioselectivity, in which the reactions underwent sequential chiral phosphoric acid-catalyzed in situ formation of N-(tert-butoxycarbonyl)-imines (N-Boc-imines) from the aminals, and 1,2-addition of β-naphthols to the N-Boc-imines. Chiral 1,2-dihydronaphtho[2,1-b]furans and naphtho[2,1-b]furans were prepared with satisfactory results when 10 mol% AgOAc and 20 mol% 2,6-lutidine or 1.2 equiv. of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) were added to the resulting chiral propargylamines solution, respectively.
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Affiliation(s)
- Ningning Man
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yuming Li
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jiyang Jie
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Hongyun Li
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Haijun Yang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yufen Zhao
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Hua Fu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
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8
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Heredia MD, Guerra WD, Barolo SM, Fornasier SJ, Rossi RA, Budén ME. Transition-Metal-Free and Visible-Light-Mediated Desulfonylation and Dehalogenation Reactions: Hantzsch Ester Anion as Electron and Hydrogen Atom Donor. J Org Chem 2020; 85:13481-13494. [DOI: 10.1021/acs.joc.0c01523] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Micaela D. Heredia
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Walter D. Guerra
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Silvia M. Barolo
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Santiago J. Fornasier
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Roberto A. Rossi
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - María E. Budén
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
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9
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Zhang W, Zhang S, Li B. Highly Enantioselective Synthesis of Propargyl Amide with Vicinal Stereocenters through Ir‐Catalyzed Hydroalkynylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wen‐Wen Zhang
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Su‐Lei Zhang
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Bi‐Jie Li
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
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10
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Zhang W, Zhang S, Li B. Highly Enantioselective Synthesis of Propargyl Amide with Vicinal Stereocenters through Ir‐Catalyzed Hydroalkynylation. Angew Chem Int Ed Engl 2020; 59:6874-6880. [DOI: 10.1002/anie.201916088] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Wen‐Wen Zhang
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Su‐Lei Zhang
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Bi‐Jie Li
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
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11
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Kou X, Zhao Q, Guan ZH. Copper-catalyzed asymmetric dearomative alkynylation of isoquinolines. Org Chem Front 2020. [DOI: 10.1039/d0qo00041h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cu/(Ph-pybox)-catalyzed asymmetric dearomative alkynylation of isoquinolines has been developed, with high yields and enantioselectivities.
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Affiliation(s)
- Xun Kou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
| | - Qingyang Zhao
- School of Pharmaceutical Sciences (Shenzhen)
- Sun Yat-sen University
- Shenzhen
- P. R. China
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry & Materials Science
- Northwest University
- Xi'an 710127
- P. R. China
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12
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Rokade BV, Barker J, Guiry PJ. Development of and recent advances in asymmetric A3 coupling. Chem Soc Rev 2019; 48:4766-4790. [PMID: 31465045 DOI: 10.1039/c9cs00253g] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Asymmetric A3 coupling has emerged as an important class of reactions to synthesise chiral propargylamines. In this tutorial review, an up to date progress of this reaction, with significant recent advancements in terms of ligand development, is presented. Applications of asymmetric A3 coupling in natural product synthesis and in tandem processes are also discussed.
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Affiliation(s)
- Balaji V Rokade
- Centre for Synthesis and Chemical Biology (CSCB), School of Chemistry, University College Dublin (UCD), Belfield, Dublin 4, Ireland.
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13
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Fan D, Hu Y, Jiang F, Zhang Z, Zhang W. Rhodium-Catalyzed Chemo- and Enantioselective Hydrogenation of Alkynyl-Aryl Hydrazones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800243] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Dongyang Fan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 People's Republic of China
| | - Yanhua Hu
- Institute of Drug Discovery Technology; Ningbo University; Ningbo 315211 People's Republic of China
| | - Feng Jiang
- Institute of Drug Discovery Technology; Ningbo University; Ningbo 315211 People's Republic of China
| | - Zhenfeng Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 People's Republic of China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 People's Republic of China
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 People's Republic of China
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14
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Morisaki K, Morimoto H, Mashima K, Ohshima T. Development of Direct Enantioselective Alkynylation of α-Ketoester and α-Ketiminoesters Catalyzed by Phenylbis(oxazoline)Rh(III) Complexes. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | | | | | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University
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15
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Chen Q, Xie L, Li Z, Tang Y, Zhao P, Lin L, Feng X, Liu X. Copper/guanidine-catalyzed asymmetric alkynylation of isatin-derived ketimines. Chem Commun (Camb) 2018; 54:678-681. [DOI: 10.1039/c7cc08920a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetric alkynylation of isatin-derived ketimines was achieved using an easily available chiral guanidine ligand in combination with CuI under mild reaction conditions.
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Affiliation(s)
- Quangang Chen
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lihua Xie
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Zhaojing Li
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Yu Tang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Peng Zhao
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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16
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Bai XY, Zhang WW, Li Q, Li BJ. Highly Enantioselective Synthesis of Propargyl Amides through Rh-Catalyzed Asymmetric Hydroalkynylation of Enamides: Scope, Mechanism, and Origin of Selectivity. J Am Chem Soc 2017; 140:506-514. [PMID: 29232516 DOI: 10.1021/jacs.7b12054] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Chiral propargyl amides are particularly useful structural units in organic synthesis. The enantioselective synthesis of propargyl amide is highly desirable. Conventional approach involves the use of a stoichiometric amount of metal reagent or chiral auxiliary. In comparison, direct alkynylation with terminal alkyne is attractive because it avoids the use of stoichiometric organometallic reagent. The asymmetric coupling of aldehyde, amine, and alkyne (A3-coupling) provides an efficient method for the synthesis of N-alkyl and N-aryl-substituted propargyl amines, but this strategy is not amenable for the direct enantioselective synthesis of propargyl amide. We have developed a new strategy and report here a Rh-catalyzed asymmetric hydroalkynylation of enamides. Alkynylations occur regioselectively at the α position of an enamide to produce chiral propargyl amides. High yield and enantioselectivity were observed. Previous alkynylation methods to prepare chiral propargyl amine involve the nucleophilic addition to an electron-deficient imine. In contrast, our current approach proceeds through regioselective hydroalkynylation of an electron-rich alkene. Kinetic studies indicated that migratory insertion of the enamide to the rhodium hydride is turnover limiting. Computational studies revealed the origin of regio- and enantioselectivities. This novel strategy provides an efficient method to access chiral propargyl amides directly from terminal alkynes.
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Affiliation(s)
- Xiao-Yan Bai
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Wen-Wen Zhang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Qian Li
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Bi-Jie Li
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University , Beijing 100084, China
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17
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De Munck L, Monleón A, Vila C, Pedro JR. Diarylprolinol as a Ligand for Enantioselective Alkynylation of Cyclic Imines. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601379] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lode De Munck
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
| | - Alicia Monleón
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
| | - Carlos Vila
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
| | - José R. Pedro
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
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18
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Liu RR, Zhu L, Hu JP, Lu CJ, Gao JR, Lan Y, Jia YX. Enantioselective alkynylation of N-sulfonyl α-ketiminoesters via a Friedel–Crafts alkylation strategy. Chem Commun (Camb) 2017; 53:5890-5893. [DOI: 10.1039/c7cc01015j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantioselective Ni(ClO4)2-catalyzed alkynylation of N-sulfonyl-α-ketiminoesters is developed via a Friedel–Crafts-type pathway, yielding propargylic amides bearing quaternary stereocenters in excellent enantioselectivities.
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Affiliation(s)
- Ren-Rong Liu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- China
| | - Jiang-Ping Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Chuan-Jun Lu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Jian-Rong Gao
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Yu Lan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- China
| | - Yi-Xia Jia
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
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19
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20
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Ying J, Wu XD, Wang D, Pu L. Catalytic Asymmetric Addition of Alkyl and Aryl Alkynes to N-(Diphenylphosphinoyl)imines. J Org Chem 2016; 81:8900-8905. [DOI: 10.1021/acs.joc.6b01599] [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)
- Jun Ying
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Xue-Dan Wu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Danny Wang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Lin Pu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
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21
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N-Boc-aminals as easily accessible precursors for less accessible N-Boc-imines: facile synthesis of optically active propargylamine derivatives using Mannich-type reactions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Morisaki K, Sawa M, Yonesaki R, Morimoto H, Mashima K, Ohshima T. Mechanistic Studies and Expansion of the Substrate Scope of Direct Enantioselective Alkynylation of α-Ketiminoesters Catalyzed by Adaptable (Phebox)Rhodium(III) Complexes. J Am Chem Soc 2016; 138:6194-203. [PMID: 27092817 DOI: 10.1021/jacs.6b01590] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mechanistic studies and expansion of the substrate scope of direct enantioselective alkynylation of α-ketiminoesters catalyzed by adaptable (phebox)rhodium(III) complexes are described. The mechanistic studies revealed that less acidic alkyne rather than more acidic acetic acid acted as a proton source in the catalytic cycle, and the generation of more active (acetato-κ(2)O,O')(alkynyl)(phebox)rhodium(III) complexes from the starting (diacetato)rhodium(III) complexes limited the overall reactivity of the reaction. These findings, as well as facile exchange of the alkynyl ligand on the (alkynyl)rhodium(III) complexes led us to use (acetato-κ(2)O,O')(trimethylsilylethynyl)(phebox)rhodium(III) complexes as a general precatalyst for various (alkynyl)rhodium(III) complexes. Use of the (trimethylsilylethynyl)rhodium(III) complexes as precatalysts enhanced the catalytic performance of the reactions with an α-ketiminoester derived from ethyl trifluoropyruvate at a catalyst loading as low as 0.5 mol % and expanded the substrate scope to unprecedented α-ketiminophosphonate and cyclic N-sulfonyl α-ketiminoesters.
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Affiliation(s)
- Kazuhiro Morisaki
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Masanao Sawa
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Ryohei Yonesaki
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Hiroyuki Morimoto
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
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23
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Lapuerta I, Vera S, Oiarbide M, Palomo C. Development of a syn-Selective Mannich Reaction of Aldehydes with Propargylic Imines by Dual Catalysis: Asymmetric Synthesis of Functionalized Propargylic Amines. Chemistry 2016; 22:7229-37. [DOI: 10.1002/chem.201600635] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Irati Lapuerta
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Silvia Vera
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
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24
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Yang ZY, Liu TL, Zheng Y, Li S, Ma JA. Asymmetric Enynylation ofN-Sulfonyl Aldimines Catalyzed by Zn-BINOL Complexes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500400] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Schmidt NG, Simon RC, Kroutil W. Biocatalytic Asymmetric Synthesis of Optically Pure Aromatic Propargylic Amines Employing ω-Transaminases. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500086] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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27
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De Munck L, Monleón A, Vila C, Muñoz MC, Pedro JR. Enantioselective alkynylation of benzo[e][1,2,3]-oxathiazine 2,2-dioxides catalysed by (R)-VAPOL-Zn complexes: synthesis of chiral propargylic cyclic sulfamidates. Org Biomol Chem 2015; 13:7393-6. [DOI: 10.1039/c5ob01012h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective alkynylation of cyclic benzoxathiazine 2,2-dioxides catalysed by (R)-VAPOL-Zn(ii) complexes is described.
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Affiliation(s)
- Lode De Munck
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100 Burjassot
- Spain
| | - Alicia Monleón
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100 Burjassot
- Spain
| | - Carlos Vila
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100 Burjassot
- Spain
| | - M. Carmen Muñoz
- Departament de Física Aplicada
- Universitat Politècnica de València
- Spain
| | - José R. Pedro
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100 Burjassot
- Spain
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28
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Karakaya I, Karabuga S, Altundas R, Ulukanli S. Synthesis of quinazoline based chiral ligands and application in the enantioselective addition of phenylacetylene to aldehydes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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Sanz-Marco A, García-Ortiz A, Blay G, Fernández I, Pedro JR. Highly Enantioselective Copper(I)-Catalyzed Conjugate Addition of Terminal Alkynes to 1,1-Difluoro-1-(phenylsulfonyl)-3-en-2-ones: New Ester/Amide Surrogates in Asymmetric Catalysis. Chemistry 2013; 20:668-72. [DOI: 10.1002/chem.201303920] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Indexed: 11/11/2022]
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30
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Kano T, Yurino T, Maruoka K. Organocatalytic Asymmetric Synthesis of Propargylamines with Two Adjacent Stereocenters: Mannich-Type Reactions of In Situ Generated C-Alkynyl Imines with β-Keto Esters. Angew Chem Int Ed Engl 2013; 52:11509-12. [DOI: 10.1002/anie.201304963] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 07/31/2013] [Indexed: 11/08/2022]
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31
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Kano T, Yurino T, Maruoka K. Organocatalytic Asymmetric Synthesis of Propargylamines with Two Adjacent Stereocenters: Mannich-Type Reactions of In Situ Generated C-Alkynyl Imines with β-Keto Esters. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304963] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Huang G, Yin Z, Zhang X. Construction of Optically Active Quaternary Propargyl Amines by Highly Enantioselective Zinc/BINOL-Catalyzed Alkynylation of Ketoimines. Chemistry 2013; 19:11992-8. [DOI: 10.1002/chem.201301479] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 11/10/2022]
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33
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Szostak M, Spain M, Procter DJ. Recent advances in the chemoselective reduction of functional groups mediated by samarium(ii) iodide: a single electron transfer approach. Chem Soc Rev 2013; 42:9155-83. [DOI: 10.1039/c3cs60223k] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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34
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Yoshimatsu M, Ohta K, Takahashi N. Propargyl Hydrazides: Synthesis and Conversion Into Pyrazoles Through Hydroamination. Chemistry 2012; 18:15602-6. [DOI: 10.1002/chem.201202828] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 10/05/2012] [Indexed: 11/12/2022]
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35
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Zinc-mediated enantioselective addition of terminal 1,3-diynes to N-arylimines of trifluoropyruvates. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.086] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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36
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Blay G, Cardona L, Pedro JR, Sanz-Marco A. Enantioselective Zinc-Mediated Conjugate Addition of Terminal Alkynes to Enones. Chemistry 2012; 18:12966-9. [PMID: 22936365 DOI: 10.1002/chem.201201765] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Gonzalo Blay
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/Dr. Moliner 50, E-46100 Burjassot (València), Spain.
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37
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Zhang FG, Ma H, Nie J, Zheng Y, Gao Q, Ma JA. Enantioselective Diynylation of Cyclic N-Acyl Ketimines: Access to Chiral Trifluoromethylated Tertiary Carbinamines. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100926] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Blay G, Ceballos E, Monleón A, Pedro JR. Enantioselective addition of terminal alkynes to N-(diphenylphosphinoyl)imines catalyzed by Zn–BINOL complexes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.01.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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39
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Al(OTf)3: an efficient recyclable catalyst for direct nucleophilic substitution of the hydroxy group of propargylic alcohols with carbon- and heteroatom-centered nucleophiles to construct C–C, C–O, C–N and C–S bonds. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.060] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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40
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Viaud P, Coeffard V, Thobie-Gautier C, Beaudet I, Galland N, Quintard JP, Le Grognec E. Electrochemical Cleavage of Sulfonamides: An Efficient and Tunable Strategy to Prevent β-Fragmentation and Epimerization. Org Lett 2012; 14:942-5. [DOI: 10.1021/ol300003f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pierre Viaud
- Université de Nantes, CNRS, Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Vincent Coeffard
- Université de Nantes, CNRS, Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Christine Thobie-Gautier
- Université de Nantes, CNRS, Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Isabelle Beaudet
- Université de Nantes, CNRS, Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Nicolas Galland
- Université de Nantes, CNRS, Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Jean-Paul Quintard
- Université de Nantes, CNRS, Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Erwan Le Grognec
- Université de Nantes, CNRS, Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
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41
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Blay G, Brines A, Monleón A, Pedro JR. Enantioselective Zinc/BINOL-Catalysed Alkynylation of Aldimines Generated in Situ from α-Amido Sulfones. Chemistry 2012; 18:2440-4. [DOI: 10.1002/chem.201102909] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Indexed: 11/08/2022]
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42
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Meyet CE, Pierce CJ, Larsen CH. A single Cu(II) catalyst for the three-component coupling of diverse nitrogen sources with aldehydes and alkynes. Org Lett 2012; 14:964-7. [PMID: 22260170 DOI: 10.1021/ol2029492] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A single Cu(II) catalyst without the addition of ligand or base couples a diverse range of nitrogen sources with alkynes and aldehydes bearing alkyl, halogenated, silyl, aryl, and heteroaryl groups. The first example of a copper-catalyzed alkynylation involving p-toluenesulfonamide provides high yields of N-Ts-protected propargylamines. The superior activity of copper(II) triflate also allows this three-component alkynylation to incorporate a ketone.
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Affiliation(s)
- Courtney E Meyet
- Department of Chemistry, University of California, Riverside, California 92521, USA
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43
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Gómez-Bengoa E, Jiménez J, Lapuerta I, Mielgo A, Oiarbide M, Otazo I, Velilla I, Vera S, Palomo C. Combined α,α-dialkylprolinol ether/Brønsted acid promotes Mannich reactions of aldehydes with unactivated imines. An entry to anti-configured propargylic amino alcohols. Chem Sci 2012. [DOI: 10.1039/c2sc20590d] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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44
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Kolleth A, Christoph S, Arseniyadis S, Cossy J. Kinetic resolution of propargylamines via a highly enantioselective non-enzymatic N-acylation process. Chem Commun (Camb) 2012; 48:10511-3. [DOI: 10.1039/c2cc35719d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Liu TL, Zhang HX, Zheng Y, Yao Q, Ma JA. Catalytic enantioselective addition of terminal 1,3-diynes to N-sulfonyl aldimines: access to chiral diynylated carbinamines. Chem Commun (Camb) 2012; 48:12234-6. [DOI: 10.1039/c2cc37290h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Blacquiere JM, Higman CS, McDonald R, Fogg DE. A Reactive Ru–Binaphtholate Building Block with Self-Tuning Hapticity. J Am Chem Soc 2011; 133:14054-62. [DOI: 10.1021/ja204767a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Johanna M. Blacquiere
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Carolyn S. Higman
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Robert McDonald
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Deryn E. Fogg
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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47
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Huang G, Yang J, Zhang X. Highly enantioselective zinc/BINOL-catalyzed alkynylation of α-ketoimine ester: a new entry to optically active quaternary α-CF3 α-amino acids. Chem Commun (Camb) 2011; 47:5587-9. [PMID: 21465056 DOI: 10.1039/c1cc10403a] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An effective method for highly enantioselective alkynylation of ketoimine (α-trifluoromethyl ketoimine ester) has been developed via a zinc/BINOL catalyzed process. This protocol provides a useful and facile access to optically active quaternary α-trifluoromethyl α-amino acids and related derivatives of interest in life sciences.
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Affiliation(s)
- Gaochao Huang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 3, 45 Lingling Road, Shanghai 200032, China
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48
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Kobayashi S, Mori Y, Fossey JS, Salter MM. Catalytic Enantioselective Formation of C−C Bonds by Addition to Imines and Hydrazones: A Ten-Year Update. Chem Rev 2011; 111:2626-704. [DOI: 10.1021/cr100204f] [Citation(s) in RCA: 761] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shu̅ Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuichiro Mori
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - John S. Fossey
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Matthew M. Salter
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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49
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Klauber EG, De CK, Shah TK, Seidel D. Merging Nucleophilic and Hydrogen Bonding Catalysis: An Anion Binding Approach to the Kinetic Resolution of Propargylic Amines. J Am Chem Soc 2010; 132:13624-6. [DOI: 10.1021/ja105337h] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eric G. Klauber
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Chandra Kanta De
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Tejas K. Shah
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
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50
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Yan W, Li P, Feng J, Wang D, Zhu S, Jiang X, Wang R. Design and synthesis of a tridentate ligand inspired by the phenomenon of self-assembly catalysis and its application in the asymmetric alkynylation of N-(diphenylphosphinoyl) imines. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.07.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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