Patent ID: 8680312
Filing Date: 2014-03-25
Classification: C07F

Abstract:
1. A process for producing disilanes of the formula (1) comprising reacting a (a) mixture comprising disilanes of formula (2) where R is an alkyl radical of 1 to 6 carbon atoms, a is 1, 2 or 3, b is 4, 5, or 6 b) with hydrogen chloride, wherein reacting takes place in the presence of an alumina catalyst which, per 100 parts by weight of alumina, contains from 1 to 10 parts by weight of aluminum chloride and from 0 to 10 parts by weight of a metal oxide selected from magnesium oxide, copper oxide, zinc oxide and mixtures thereof; and wherein the temperature of reaction is in the range from 180° C. to 280° C.