中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
二苯甲基(三苯基)硅烷 | Diphenylmethyl-triphenyl-silan | 809-39-2 | C31H26Si | 426.633 |
Triarylsilylmethylmetallic reagents have been prepared by several routes: metalation; addition of phenyllithium to vinyltriphenylsilane; direct synthesis; and by halogen–metal exchange. The latter method is highly superior as regards both generality of application and yields. Dibromomethylsilanes undergo halogen-metal exchange at −78°, and reaction of the product with hydrogen bromide serves as a valuable way of converting geminal dibromides to monobromides. The organometallic reagents have been characterized in several ways, in particular by carbonation to give the related carboxylic acid.