Preparation of 1-substituted 1-vinylcycloalkanes from 3,3-tetra- and 3,3-penta-methyleneallylboranes
作者:Yu.N. Bubnov、V.I. Zheludeva、A.V. Ignatenko
DOI:10.1016/0022-328x(89)85424-5
日期:1989.1
The boranes I and II, obtained by hydroboration of 1,1-tetra- and 1,1-pentamethyleneallenes with 9-BBN, were used as key reactants in the synthesis of a series of unsaturated gem-substituted carbinols (VIIa-VIIg, Xa-Xc, and XII), as well as 1,1-divinylcyclopentane and 1,1-divinylcyclohexane (XV and XVIII). The addition reactions of the boranes I and II to the carbonyl compounds and ethoxyacetylene
通过1,9-BBN对1,1-四-和1,1-戊亚甲基苯进行硼氢化反应制得的硼烷I和II在合成一系列不饱和宝石取代的甲醇(VIIa-VIIg,Xa)中用作关键反应物-Xc和XII),以及1,1-二乙烯基环戊烷和1,1-二乙烯基环己烷(XV和XVIII)。所研究的硼烷Ⅰ和Ⅱ与羰基化合物和乙氧基乙炔的加成反应,以及Ⅱ的蛋白裂解与烯丙基部分的全部重排一起发生。