Trialkylboranes derived from terminal, cyclic and bicyclic olefins via hydroboration with 5 mole percent excess borane undergo ready redistribution with boron trichloride at 110° to give the corresponding alkyldichloroboranes, providing a convenient synthesis of such derivatives. On the other hand, trialkylboranes derived from internal olefins, such as 3-hexene, undergo this reaction more sluggishly
A number of bis-2,1,3,4-boratriazaroles have been prepared by reacting boronic acids or their derivatives with bis-amidrazones and their properties studied.
作者:Nicolay Yu. Adonin、Vadim V. Bardin、Hermann-Josef Frohn
DOI:10.1002/zaac.200600357
日期:2007.4
A well applicable preparative method for lithium perfluoroalkyltrimethoxyborates, Li[CnF2n+1B(OMe)3] (n = 3, 4, 6), was elaborated which is based on the reaction of B(OMe)3 with CnF2n+1Li generated from CnF2n+1H and t-BuLi. Alternative perfluoroalkylation reactions of B(OMe)3 with perfluoropropyllithium generated from C3F7I and RLi, perfluoropropylmagnesium bromide, or perfluoropropyltrimethylsilane