We report magnesium-catalyzed cross-dehydrocoupling of Si-H and N-H bonds to give Si-N bonds and H2. A number of silazanes are accessible using this method, as well as silylamines from NH3 and silylhydrazines from N2H4. Kinetic studies of the overall catalytic cycle and a stoichiometric Si-N bond-forming reaction suggest nucleophilic attack by a magnesium amide as the turnover-limiting step.
KeywordsBond-forming reactions, Catalytic cycles, kinetic study, nucleophilic attack, organosilanes, si-N bonds, silazanes, magnesium, silicon, ammonia, hydrogen, magnesium derivative, nitrogen, tris(oxazolinyl)boratomagnesium, chemical binding, cross coupling reaction, nucleophilicity, stoichiometry ABSTRACT: We report magnesium-catalyzed cross-dehydrocoupling of SiÀH and NÀH bonds to give SiÀN bonds and H 2 . A number of silazanes are accessible using this method, as well as silylamines from NH 3 and silylhydrazines from N 2 H 4 . Kinetic studies of the overall catalytic cycle and a stoichiometric SiÀN bond-forming reaction suggest nucleophilic attack by a magnesium amide as the turnoverlimiting step.
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