Synthesis 2016; 48(16): 2603-2611
DOI: 10.1055/s-0035-1560435
special topic
© Georg Thieme Verlag Stuttgart · New York

Chiral Iminophosphorane Organocatalyzed Asymmetric Sulfenyl­ation of 3-Substituted Oxindoles: Substrate-Interrelated Enantio­selectivities

Xing Gao
a   Key Laboratory of Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, P. R. of China   Email: wanglimin@ecust.edu.cn
b   Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai, 200032, P. R. of China   Email: jianweihan@sioc.ac.cn
,
Jianwei Han*
b   Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai, 200032, P. R. of China   Email: jianweihan@sioc.ac.cn
,
Limin Wang*
a   Key Laboratory of Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, P. R. of China   Email: wanglimin@ecust.edu.cn
› Author Affiliations
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Publication History

Received: 13 January 2016

Accepted after revision: 26 February 2016

Publication Date:
27 April 2016 (online)


Dedicated to Prof. Dr. Dieter Enders on the occasion of his 70th birthday

Abstract

Catalytic asymmetric sulfenylation of 3-substituted oxindoles has been developed through efficient catalysis by tartaric acid derived chiral iminophosphoranes. With N-(phenylthio)phthalimide as the sulfur source, a wide range of optically active 3-phenylthiooxindoles were obtained in excellent yields (90–99%) and good enantiomeric excess (up to 90% ee). Interestingly, 3-aryl and 3-methyl substituted oxindoles afforded sulfenylated products in S-configuration, whereas substituted oxindoles with 3-arylidene or 3-isobutyl substituents gave the corresponding R-configured sulfenylated products.

Supporting Information