VO(OR)Cl2-induced cyclization of diketene via ring opening
作者:Toshikazu Hirao、Takashi Fujii、Yoshiki Ohshiro
DOI:10.1016/0022-328x(91)83148-w
日期:1991.4
Diketene undergoes a VO(OR)Cl2-induced cyclization with styrenes via ring opening to give 3-alkoxycarbonyl-2-methyl-5-phenyl-4,5-dihydrofurans. Desilylative aromatization to the furans is observed in the reaction with alpha-trimethylsilylstyrene.