The coupling of rhodium carbenoids from vinyl diazoacetates with 2-thio-3-alkyl indoles was found to generate C(3) quaternary substituted indolines via a thionium ylide-initiated [3,3]-sigmatropic rearrangement.
                                    铑类
胡萝卜素从重氮
乙酸乙烯酯与2-thio-3-烷基
吲哚的偶联被发现通过
硫鎓叶立德引发的[3,3]-σ重排产生C(3)季取代的二氢
吲哚。