Patent ID: 7459576

Claim:
A process for preparing aminoalkylsilanes of the general formula (V) and/or (VI), comprising reacting cyclic silazanes of the formula (I), (IV), or both (I) and (IV) with alcohols of the formula (III) R 3 —OH (III), where R is a divalent, optionally cyano- or halogen-substituted C 3 -C 15 -hydrocarbon radical in which one or more nonadjacent methylene units are optionally replaced by groups —O—, —CO—, —COO—, —OCO—, or —OCOO—, —S—, or —NR x —, and in which one or more nonadjacent methyne units are optionally replaced by groups —N═, —N═—, or —P═, R being bonded to silicon by an Si—C bond and to nitrogen by a C—N bond, where at least 3 and at most 6 atoms are located between silicon and nitrogen atoms in the ring structure of cyclic silazenes(I and IV), R x is hydrogen or a C 1 -C 10 -hydrocarbon radical, optionally halogen-substituted, and R 2 is a hydrogen atom or a monovalent, optionally cyano- or halogen-substituted, Si—C— bonded C 1 -C 20 -hydrocarbon radical or C 1 -C 20 -oxyhydrocarbon radical, in which, in each case, one or more nonadjacent methylene units are optionally replaced by groups —O—, —CO—, —COO—, —OCO—, or —OCOO—, —S—, or—NR x —, and in which one or more nonadjacent methyne units are optionally replaced by groups —N═, —N═, or —P═, and R 3 is a monovalent C 1 -C 20 -hydrocarbon radical in which in each case one or more nonadjacent methylene units are optionally replaced by groups —O—, —CO—, —COO—, —OCO—, or —OCOO—, —S—, or —NR x —, and in which one or more nonadjacent methyne units are optionally replaced by groups —N═, —N═N—, or —P═.