Stereochemical Studies on the Nucleophilic Substitution in the Reaction of Allylic Phosphates with Organoaluminum Reagents
作者:Akira Itoh、Shuji Ozawa、Koichiro Oshima、Shizuka Sasaki、Hajime Yamamoto、Tamejiro Hiyama、Hitosi Nozaki
DOI:10.1246/bcsj.53.2357
日期:1980.8
The reaction of cis- or trans-5-isopropenyl-2-methyl-2-cyclohexenyl diethyl phosphate (1) with Me2AlX (X=OPh, SPh, NHPh) in hexane results in substitution of the –O–PO(OEt)2 group with X under predominant inversion. In contrast, treatment of cis- or trans-1 with trialkylaluminum produces predominantly the allyl-nonallyl couplingproducts of the same (thermodynamically more stable) configuration. Similar
顺式或反式 5-异丙烯基-2-甲基-2-环己烯基磷酸二乙酯 (1) 与 Me2AlX (X=OPh, SPh, NHPh) 在己烷中的反应导致 -O-PO(OEt)2 的取代X 处于显性反转的组。相反,用三烷基铝处理顺式或反式 1 主要产生相同(热力学更稳定)构型的烯丙基-壬烯丙基偶联产物。内-和外-2-乙酰氧基降卡烷的类似烷基化仅产生内-2-甲基降卡烷。