Synthesis of Optically Pure Spiro[cyclohexane-oxindoline] Derivatives via Catalytic Asymmetric Diels-Alder Reaction of Brassard-Type Diene with Methyleneindolines

J Org Chem. 2015 Sep 4;80(17):8836-42. doi: 10.1021/acs.joc.5b01318. Epub 2015 Aug 22.

Abstract

A highly efficient N,N'-dioxide-Zn(II) complex catalytic system for the asymmetric Diels-Alder reaction of Brassard-type diene with methyleneindolines was developed. The optically pure spiro[cyclohex[3]ene-1,3'-indoline]-1'-carboxylate-2, 2'-dione derivatives containing three stereocenters were obtained in moderate yields with 98% to >99% ee in a stereospecific manner.

Publication types

  • Research Support, Non-U.S. Gov't