Synthesis of α-silylalkylbenzoxazoles and oxazoles from stable silylketenes
作者:Stephen P. Marsden、James T. Steer、Barry S. Orlek
DOI:10.1016/j.tet.2009.03.105
日期:2009.7
Stable silylketenes, prepared by rhodium-catalysed decomposition of silyldiazoketones, undergo addition/cyclocondensation sequences with aminophenols and aminomalonate to give α-silylalkylbenzoxazoles and oxazoles, respectively. The silicon can be retained throughout functional group interconversions or can be removed by protodesilylation under acidic conditions as desired.