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One-pot cyclization of 2-aminophenethyl alcohols: a novel and direct approach to the synthesis of N-acyl indolines.

The Journal of organic chemistry (2007-11-02)
Zengxue Wang, Wen Wan, Haizhen Jiang, Jian Hao
ABSTRACT

A unique one-pot cyclization of 2-aminophenethyl alcohols with carboxylic acids in the presence of PPh3, CCl4, and NEt3 furnished the formation of N-acyl indolines in good to excellent yields. This new approach provides an efficient, scalable, low-cost, and direct access to the biologically important indolines which are further oxidizable to indoles and oxindoles.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
2-Aminophenethyl alcohol, 97%