Condensation des dérivés dihalogénés sur l'acétone-1,3 diphosphorane. Nouvelle voie d'accès aux cycloalkycétones et aux δ-dicétones
作者:A. Hercouet、M. Le Corre
DOI:10.1016/0040-4020(77)80428-6
日期:1977.1
Reaction of aliphatic halides BrCH2-(CH2)n-CH2Br (n =0,2,3) and α,α'-dibromo o-xylene with acetone-1,3 diphosphorane gives, after hydrolysis, cyclopropyl, cyclopentyl, cyclohexyl, and indanyl-carbonylmethýlenètriphénylphosphoranes; cycloalkylcetones are obtained from these ylides by Wittig reaction or hydrolysis. Condensation of di-iodomethane leads to δ-diketonic compounds.
脂肪族卤化物BrCH 2-(CH 2)n -CH 2 Br(n = 0,2,3)和α,α'-二溴邻二甲苯与丙酮1,3二磷烷的反应在水解后得到环丙基,环戊基,环己基和茚满基-羰基甲基ý烯三戊基膦酸酯; 通过维蒂希反应或水解从这些烷基化物获得环烷基丙酮。二碘甲烷的缩合产生δ-二酮化合物。