Reduction of suitably substituted dichloro-or dibromo-methylcyclohexadienones with tributyltin hydride affords tropones (or tropolones)in medium to excellent yield; ortho-and para-substituted cyclohexadienones afford the same tropone.
用氢化三
丁基锡还原适当取代的二
氯-或二
溴-甲基环己二酮,可在中等产率下提供托酮(或托洛酮);邻和对取代的环己二酮提供相同的托洛酮。