作者:A.J.H. Klunder、B. Zwanenburg
DOI:10.1016/0040-4020(75)87074-8
日期:1975.1
The base induced homoallylic rearrangement in the highly strained homocubane and cubane cage systems has been studied. Under aprotic conditions using LiN(iPr)2 as base, homocubane methylcyanide 3 and sulfone 5 are converted quantitatively into tricyclo [4.2.1.02,5]nonene derivatives by a regiospecific cleavage of C4-C7 and C5-C6 bond. This process is formulated as a double γ-homoallylic rearrangement
已经研究了在高度拉紧的同型体和古巴笼系统中碱基诱导的同型重排。在以LiN(iPr)2为碱的非质子条件下,通过C 4 -C 7和C 5 -C 6键的区域特异性裂解,高纯甲基氰化物3和砜5被定量转化为三环[4.2.1.0 2,5 ]壬烯衍生物。。该过程被表述为双γ-均烯丙基重排。在相似条件下,乙酸高纯丙二醇酯7不产生均烯丙基重排。古巴甲基氰化物18和31表明当用LiN(iPr)2在THF中处理时,容易的区域特异性γ-均烯丙基重排导致三环[4.2.0.0 2,5 ]辛烯化合物。与乙酸高乙酰胺7相反,通过在THF中用LiN(iPr)2处理,乙酸乙二醛21易于转化为γ-均烯丙基重排产物。讨论了γ均聚物重排的机理。