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Your search keyword '"Chen, Yan"' showing total 6 results
Start Over Author "Chen, Yan" Topic diastereoselective syntheses Journal cheminform
6 results on '"Chen, Yan"'

1. ChemInform Abstract: Dihydrooxazine N-Oxide Intermediates as Resting States in Organocatalytic Kinetic Resolution of Functionalized Nitroallylic Amines with Aldehydes.

Author

Gurubrahamam, Ramani, Chen, Yan Ming, Huang, Wan‐Yun, Chan, Yu‐Te, Chang, Hsiang‐Kai, Tsai, Ming‐Kang, and Chen, Kwunmin

Subjects
*HYDROLYSIS, *AMINES, *ALDEHYDES
Abstract

Further hydrolysis of the title intermediates provides tetrahydropyridines in high yields and with high diastereo- and enantioselectivities. [ABSTRACT FROM AUTHOR]

Published
2016
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2. ChemInform Abstract: Organocatalytic Desymmetrization of Cyclic meso-Anhydrides Through Enantioselective Alcoholysis with Functionalized Primary Nitroallylic Alcohols.

Author

Chen, Yan ming, Amireddy, Mamatha, and Chen, Kwunmin

Subjects
*ORGANOCATALYSIS, *ENANTIOSELECTIVE catalysis, *ANHYDRIDES
Abstract

An abstract of the article " Organocatalytic Desymmetrization of Cyclic meso-Anhydrides Through Enantioselective Alcoholysis with Functionalized Primary Nitroallylic Alcohols" by Y. M. Chen and colleagues is presented.

Published
2015
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4. ChemInform Abstract: Desymmetrization and Switching of Stereoselectivity in Direct Organocatalytic Michael Addition of Ketones to 1,1-Bis(phenylsulfonyl)ethylene.

Author

Chen, Yan ming, Lee, Pei‐Hsun, Lin, Jun, and Chen, Lwunmin

Subjects
*KETONES, *ORGANIC compounds, *KETOACIDOSIS, *OXO compounds, *CHEMICAL equations
Abstract

Camphor-derived pyrrolidine catalyst bearing a thiourea-group and cinchonidine-derived catalyst are used to prepare the enantiomeric ketosulfones with comparable yields and stereoselectivities. [ABSTRACT FROM AUTHOR]

Published
2013
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5. ChemInform Abstract: Organocascade Synthesis of Annulated (Z)-2-Methylenepyrans: Nucleophilic Conjugate Addition of Hydroxycoumarins and Pyranone to Branched Nitro Enynes via Allene Formation/Oxa-Michael Cyclization/Alkene Isomerization Sequence.

Author

Gurubrahamam, Ramani, Gao, Bing‐Fong, Chen, Yan ming, Chan, Yu‐Te, Tsai, Ming‐Kang, and Chen, Kwunmin

Subjects
*CHEMICAL synthesis, *STEREOSELECTIVE reactions, *ENANTIOSELECTIVE catalysis
Abstract

The title synthesis succeeds in high yields, with high diastereoselectivities and excellent enantioselectivities. [ABSTRACT FROM AUTHOR]

Published
2016
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6. ChemInform Abstract: Chiral Broensted Acid-Catalyzed Alkylation of C3-Substituted Indoles with o-Hydroxybenzyl Alcohols: Highly Enantioselective Synthesis of Diarylindol-2-ylmethanes and Evaluation on Their Cytotoxicity.

Author

Wu, Qiong, Ma, Chun, Du, Xi‐hua, Chen, Yan, Huang, Tian‐zi, Shi, Xiao‐qin, Tu, Shu‐jiang, and Cai, Pei‐jun

Subjects
*METHANE synthesis, *BRONSTED acids, *ALKYLATION, *FRIEDEL-Crafts reaction, *ENANTIOSELECTIVE catalysis
Abstract

A chiral phosphoric acid catalyzed Friedel-Crafts alkylation of 2-hydroxybenzyl alcohols (I) with 3-methylindols (II) and (IV) is established. [ABSTRACT FROM AUTHOR]

Published
2016
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