作者:Herbert C. Brown、Alan B. Levy
DOI:10.1016/s0022-328x(00)82909-5
日期:1972.11
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
通过与5摩尔%过量的硼烷进行氢硼化而衍生自末端,环状和双环烯烃的三烷基硼烷易于与三氯化硼在110°下重新分布,得到相应的烷基二氯硼烷,为此类衍生物的合成提供了方便。另一方面,衍生自内烯烃例如3-己烯的三烷基硼烷更缓慢地进行该反应并产生其中硼原子已部分地从其原始位置迁移的产物。