Rhodium carbenoid mediated cyclisations. Synthesis and rearrangement of cyclic sulphonium ylides
作者:Christopher J. Moody、Roger J. Taylor
DOI:10.1016/s0040-4039(00)82252-2
日期:1988.1
Treatment of diazo sulphides with rhodium (II) acetate in benzenegives six- and seven-membered cyclic sulphonium ylides; although the S-benzyl and S-ethyl ylides can be isolated, they rearrange, or eliminate ethylene respectively, on heating; the S-allyl ylides cannot be isolated since they undergo spontaneous [2,3]-sigmatropic rearrangement.
在苯中的六元和七元环状sulph叶立德用乙酸铑(II)处理重氮硫化物;尽管可以分离出S-苄基和S-乙基,但是它们在加热时分别重排或消除了乙烯。由于S-烯丙基内酯发生自发的[2,3]-σ重排,因此无法将其分离。