An efficient synthesis of 3-cyano-3-benzoyloxyoxindoles via cyanoacylation of isatins in the presence of 4Å molecular sieves
作者:Abbas Ali Esmaeili、Saeid Amini Ghalandarabad、Mahdieh Zangouei
DOI:10.1016/j.tetlet.2012.08.014
日期:2012.10
In the presence of 4 angstrom molecular sieves in CH3CN, a process for the cyanobenzoylation and cyanocarbonylation of isatins with benzoycyanides and ethylcyanoformate under mild reaction conditions has been developed. This approach provides easy access to a wide range of 3-cyano-3-benzoyloxyoxindoles and 3-cyano-3-ethoxycarbonyloxyoxindoles in good to excellent yields. (C) 2012 Elsevier Ltd. All rights reserved.