The B(C6F5)3-catalyzed transesterification of a series of 3-alkenyl-oxindoles and other unsaturated tert-butyl esters with aryl-diazo esters is reported. This protocol is facile and generally high yielding proceeding under mild conditions and is remarkably chemoselective leaving the CC bonds intact.
                                    报道了一系列3-烯基-羟
吲哚和其他不饱和叔丁基酯与芳基重氮酯的B(C 6 F 5 ) 3催化酯交换反应。该方案在温和条件下操作简便且通常产率高,并且具有显着的
化学选择性,使 C C 键完好无损。