Patent ID: 8722914
Filing Date: 2014-05-13
Classification: C07F

Abstract:
1. A process for preparing silaoxacycles of the formula I comprising reacting compounds of the formula II to form compounds of the formula (I) in the presence of at least one catalyst comprising a metal of groups 3 to 15 and the lanthanides of the Periodic Table of the Elements according to IUPAC notation, or compound(s) thereof, where x is an integer ≧0, n is an integer ≧1, R 1 is hydrogen or a hydrocarbyl radical which is unsubstituted or is substituted by one or more Q 1 groups and is optionally interrupted by one or more heteroatoms or is an OR 3 group, R 2 is hydrogen or a hydrocarbyl radical which is unsubstituted or is substituted by one or more Q 1 groups and is optionally interrupted by one or more heteroatoms or is an OR 4 group, R 3 is a hydrocarbyl radical which is unsubstituted or is substituted by one or more Q 1 groups and is optionally interrupted by one or more heteroatoms, R 4 is a hydrocarbyl radical which is unsubstituted or is substituted by one or more Q 1 groups and is optionally interrupted by one or more heteroatoms, or is a CH 2 Si(R 5 ) 3-q {OCH 2 Si(R 5 ) 3-r [OCH 2 Si(R 5 ) 2 (OR 3 )] r } q group, q is an integer of 0, 1, 2 or 3, r is an integer of 0, 1, 2 or 3, R 5 is hydrogen or a hydrocarbyl radical which is unsubstituted or is substituted by one or more Q 1 groups and is optionally interrupted by one or more heteroatoms, or an OR 3 group, and Q 1 is a monovalent, divalent or trivalent heteroatom-containing radical, where R