NDLI: Synthesis of Novel Chiral Phase-Transfer Catalysts and Their Application to Asymmetric Synthesis of α-Amino Acid Derivatives

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Synthesis of Novel Chiral Phase-Transfer Catalysts and Their Application to Asymmetric Synthesis of α-Amino Acid Derivatives

Content Provider	Scilit
Author	Zhang, Shengyong He, Wei Wang, Quanjun Wang, Qiaofeng Zhang, Bangle Sun, Xiaoli
Copyright Year	2009
Description	To investigate the electronic and steric influences on enantioselectivities of asymmetric phase-transfer reactions, a series of chiral quaternary ammonium salts were synthesized from cinchona alkaloids and 2-chloromethylbenzimidazole or 1-chloromethyl benzotriazole. Using one of the cinchonine-derived alkaloid catalysts, enantioselective alkylations of N-(diphenylmethylene) glycine tert-butyl ester were efficiently carried out with various alkyl halides to give products in high enantiomeric excess (94-99% ee).
Related Links	http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0029-1216736.pdf
Ending Page	1314
Page Count	4
Starting Page	1311
ISSN	09365214
e-ISSN	14372096
DOI	10.1055/s-0029-1216736
Journal	Synlett
Issue Number	08
Volume Number	2009
Language	English
Publisher	Georg Thieme Verlag KG
Publisher Date	2009-04-22
Access Restriction	Open
Subject Keyword	Journal: Synlett Organic Chemistry Asymmetric Catalysis Amino Acids Phase-transfer Catalysis Cinchona Alkaloids
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry

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