Issue 3, 2015
From the journal:

Chemical Communications

Direct asymmetric vinylogous Michael addition of 3-alkylidene oxindoles to chalcones catalyzed by a chiral N,N′-dioxide ytterbium(iii) complex†

Xiao Xiao,a   Hongjiang Mei,a   Quangang Chen,a   Xiaohu Zhao,a   Lili Lin,a   Xiaohua Liua  and  Xiaoming Feng*a  

* Corresponding authors

a Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, P. R. China
E-mail: xmfeng@scu.edu.cn
Fax: +86 28 85418249
Tel: +86 28 85418249

Abstract

A chiral ytterbium(III)–N,N′-dioxide catalyst system has been developed for the catalytic direct asymmetric vinylogous Michael addition of 3-alkylidene oxindoles to chalcones, delivering the γ-substituted alkylideneoxindoles in high yields, enantioselectivities and good Z/E selectivities under mild reaction conditions.

Graphical abstract: Direct asymmetric vinylogous Michael addition of 3-alkylidene oxindoles to chalcones catalyzed by a chiral N,N′-dioxide ytterbium(iii) complex

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Article information

DOI
https://doi.org/10.1039/C4CC07204A
Article type
Communication
Submitted
12 Sep 2014
Accepted
02 Nov 2014
First published
21 Nov 2014

Chem. Commun., 2015,51, 580-583

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Direct asymmetric vinylogous Michael addition of 3-alkylidene oxindoles to chalcones catalyzed by a chiral N,N′-dioxide ytterbium(III) complex

X. Xiao, H. Mei, Q. Chen, X. Zhao, L. Lin, X. Liu and X. Feng, Chem. Commun., 2015, 51, 580 DOI: 10.1039/C4CC07204A

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