Phosphine‐Catalyzed Enantioselective γ‐Addition of 3‐Substituted Oxindoles to 2, 3‐Butadienoates and 2‐Butynoates: Use of Prochiral Nucleophiles1. (12th February 2014)

• Record Type: Journal Article
• Authors: Wang, Tianli; Yao, Weijun; Zhong, Fangrui; Pang, Guo Hao; Lu, Yixin
• Is Part Of: Angewandte Chemie. Volume 126:Number 11(2014)
• Page Start: 3008
• Page End: 3012
• Publication Date: 2014-02-12
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201307757
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The first phosphine‐catalyzed enantioselective γ‐addition with prochiral nucleophiles and 2, 3‐butadienoates as the reaction partners has been developed. Both 3‐alkyl‐ and 3‐aryl‐substituted oxindoles could be employed in this process, which is catalyzed by a chiral phosphine that is derived from an amino acid, thus affording oxindoles that bear an all‐carbon quaternary center at the 3‐position in high yields and excellent enantioselectivity. The synthetic value of these γ‐addition products was demonstrated by the formal total synthesis of two natural products and by the preparation of biologically relevant molecules and structural scaffolds.</p> </abstract>