Hydrosilane with bromine

Transformation of hydrosilane to chlorosilane with carbon tetrachloride in the presence of a palladiumllll chloride catalyst 475 Transformation of hydrosilane to chlorosilane with hydrochloric acid in the presence of a palladiumllll chloride catalyst 475 Selective transformation of dihydrosilane to monochlorosilane with copper(ll chloride in the presence of a copperlll iodide catalyst 476 Transformation of hydrosilane to bromosilane with bromine 477 Transformation of hydrosilane to bromosilane with N-bromosuccinimide (NBSI 478... 

Synthesis of Bromosilanes from Hydrosilanes. In the presence of a catalytic amount of Cul, CuBr2 (2 equiv) converts hydrosilanes into monobromosilanes at room tenperature in good yield. Substrates include monohydrosilanes, dihydrosilanes, trihydrosilanes, and 1,2-dihydrodisilane. However, with di- and trihydrosilanes the second bromination employing 4 equiv of CuBr2 is much slower. 

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