1
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Methyltrioxorhenium/urea hydrogen peroxide catalyzed oxidation of N-sulfinyl imines: A mild and highly efficient access to N-sulfonyl aldimines, ketimines and α-ketiminoesters. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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2
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Cruz-Delgado B, Rodríguez RI, Rosado-Abón A, Sánchez-Obregón R, Yuste F, Alemán J. Stereocontrolled Addition of Scrambling ortho-Sulfinyl Carbanions: Easy Access to Homopropargylamines and α-Allenylamines. Org Lett 2020; 22:2431-2436. [PMID: 32153194 DOI: 10.1021/acs.orglett.0c00625] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An unprecedented behavior of ortho-sulfinylpropargyl carbanions in the presence of optically active sulfinylimines affords two different families of compounds: this peculiar chemodivergency is importantly affected by the nature of the employed base, and assisted by the configuration of the electrophile, displaying no alteration in the stereocontrol of both reactions. α-Allenylamines are formed exclusively, using R-sulfinyl aldimines as electrophiles, while homopropargylamines result when S-sulfinyl aldimines are employed.
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Affiliation(s)
- Balú Cruz-Delgado
- Instituto de Quı́mica, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán 04510, Mexico City, México
| | - Ricardo I Rodríguez
- Departamento de Quı́mica Orgánica (Modulo-1), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Anielka Rosado-Abón
- Instituto de Quı́mica, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán 04510, Mexico City, México
| | - Rubén Sánchez-Obregón
- Instituto de Quı́mica, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán 04510, Mexico City, México
| | - Francisco Yuste
- Instituto de Quı́mica, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán 04510, Mexico City, México
| | - José Alemán
- Departamento de Quı́mica Orgánica (Modulo-1), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain
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3
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Yu S, Hua R, Fu X, Liu G, Zhang D, Jia S, Qiu H, Hu W. Asymmetric Multicomponent Reactions for Efficient Construction of Homopropargyl Amine Carboxylic Esters. Org Lett 2019; 21:5737-5741. [DOI: 10.1021/acs.orglett.9b02139] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sifan Yu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ruyu Hua
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiang Fu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Gengxin Liu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Dan Zhang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Shikun Jia
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Huang Qiu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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4
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Coffinet M, Behr JB, Jaroschik F, Harakat D, Vasse JL. Single or Synergistic Kinetic Resolutions of Chiral Allylalanes: Two Complementary Routes for the Asymmetric Synthesis of Syn Homoallylamines. Org Lett 2017; 19:6728-6731. [PMID: 29210269 DOI: 10.1021/acs.orglett.7b03455] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two strategies based on kinetic resolution(s) of chiral alanes and providing enantioenriched syn homoallylamines are reported. The first implies a single kinetic resolution of the alane using camphor; the second requires two sequential kinetic resolutions using the synergistic combination of (-)-camphor/(R)-tert-butylsulfinamide-derived imines. This syn selectivity, specific to the use of allyaluminum, opens the way to the preparation of valuable building blocks as illustrated by the synthesis of (+)-epilupinamine.
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Affiliation(s)
- Michaël Coffinet
- Institut de Chimie Moléculaire, CNRS (UMR 7312) and Université de Reims , Reims 51687 Cedex 2, France
| | - Jean-Bernard Behr
- Institut de Chimie Moléculaire, CNRS (UMR 7312) and Université de Reims , Reims 51687 Cedex 2, France
| | - Florian Jaroschik
- Institut de Chimie Moléculaire, CNRS (UMR 7312) and Université de Reims , Reims 51687 Cedex 2, France
| | - Dominique Harakat
- Institut de Chimie Moléculaire, CNRS (UMR 7312) and Université de Reims , Reims 51687 Cedex 2, France
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire, CNRS (UMR 7312) and Université de Reims , Reims 51687 Cedex 2, France
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5
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Grellepois F, Ben Jamaa A, Saraiva Rosa N. α-Trifluoromethylated tertiary homoallylic amines: diastereoselective synthesis and conversion into β-aminoesters, γ- and δ-aminoalcohols, azetidines and pyrrolidines. Org Biomol Chem 2017; 15:9696-9709. [PMID: 29125173 DOI: 10.1039/c7ob02506h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The diastereoselective addition of allyl zinc and allylindium derivatives to α-trifluoromethyl N-tert-butanesulfinyl hemiaminals, bench stable precursors of aryl and alkyl trifluoromethyl ketimines, allows the synthesis of homoallylic amines containing a tetrasubstituted carbon stereocentre bearing a trifluoromethyl group with good diastereoselectivities (up to dr > 99 : 1). This approach was also suitable for accessing chiral homoallylic amines bearing two contiguous stereocenters. The synthetic usefulness of N-tert-butanesulfinyl homoallylamines was illustrated by preparing various trifluoromethylated nitrogen containing bifunctional synthons (aminoesters, aminoalcohols) and small azaheterocycles (azetidines, pyrrolidines).
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Affiliation(s)
- Fabienne Grellepois
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, UFR des Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 2, France.
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6
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Si CM, Shao LP, Mao ZY, Zhou W, Wei BG. An efficient approach to trans-4-hydroxy-5-substituted 2-pyrrolidinones through a stereoselective tandem Barbier process: divergent syntheses of (3R,4S)-statines, (+)-preussin and (−)-hapalosin. Org Biomol Chem 2017; 15:649-661. [DOI: 10.1039/c6ob02523d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Natural products of (+)-preussin and (−)-hapalosin have been asymmetrically synthesized through the stereoselective tandem Barbier process.
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Affiliation(s)
- Chang-Mei Si
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai
- China
| | - Lu-Ping Shao
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai
- China
| | - Zhuo-Ya Mao
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai
- China
| | - Wen Zhou
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai
- China
| | - Bang-Guo Wei
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai
- China
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