Silver-catalyzed synthesis of disubstituted isoxazoles by cyclization of alkynyl oxime ethers
作者:Masafumi Ueda、Yuki Ikeda、Aoi Sato、Yuta Ito、Maiko Kakiuchi、Hiroko Shono、Tetsuya Miyoshi、Takeaki Naito、Okiko Miyata
DOI:10.1016/j.tet.2011.04.083
日期:2011.6
A facile and practical synthesis of 3,5-disubstituted isoxazoles via a silver-catalyzed cyclization and subsequent protonation of alkynyl oxime ethers has been developed. The methodology was successfully applied to the synthesis of a biologically active isoxazolecarboxylic acid. (C) 2011 Elsevier Ltd. All rights reserved.