The synthesis of higher cyclomethylalkylsilazanes

The ammonolysis of dichloro(isobutyl)methylsilane and dichloro(methyl)(nonyl)silane forms triisobutyltrimethylcyclotrisilazane, tetraisobutyltetramethylcyclotetrasilazane, and trimethyltrinonylcyclotrisilazane. The coammonolysis of dichloro(isobutyl)(methyl)silane with trichloro(nonyl)silane gave a cyclic compound with free amino groups-3,7-diamino-1,1,5,5-tetraisobutyl-1,1,5,5-tetramethyl-3, 7-dinonylcyclotetrasilazane- and the coammonolysis of dichloro(isobutyl) (methyl)silane with trichloro-(isobutyl)silane yielded bicyclic products-1,3,5,7-tetraisobutyl-1,5-dimethylbicyclotetrasilazane and 1,3,5,7,9pentaisobutyl-1,5,7-trimethylbicyclopentasilazane.