作者:H. Nozaki、K. Nakamura、M. Takaku
DOI:10.1016/s0040-4020(01)82900-8
日期:——
Sulphonium diacylmethylides RR′-;(COR′)2 react with R′'‴MgX to afford ketones R′COR′'′, if either R′' or R′'′ has an α-hydrogen. In the absence of this, for example, the reaction of R(Me)(COPh)2 with PhMgBr results in elimination of the S-;Me and gives a product RSC(COPh2. If R, R′, R′' and R‴ are all Ph groups, benzophenone and Ph2HCOPh are formed. The reaction of phenacylides R(Me)HCOPh with
如果R''或R'''具有α-氢,则二酰基甲磺酸RRRR'-;(COR')2与R''MgX反应生成酮R'COR'''。在没有这种情况的情况下,例如,R(Me)(COPh)2与PhMgBr的反应导致S-; Me的消除,得到产物RSC(COPh 2)。 '”和R'''在所有pH团,二苯甲酮且Ph 2 HCOPh形成。phenacylides R(Me)的HCOPh与R'''MGX反应消去R'''我的产生RSCH前进2 COPH。与PhLi的反应这些叶立德也被记录下来。