An Efficient Catalytic Approach for the Synthesis of Unsymmetrical Siloxanes
作者:Grzegorz Hreczycho
DOI:10.1002/ejic.201402904
日期:2015.1
expanding the variety of catalytic methods for siloxane bond formation is explored. Alkoxysilanes react with methylallylsilanes in the presence of scandium(III) trifluoromethanesulfonate to yield disiloxanes and isobutene. The reaction proceeds through one-pot hydrolysis/O-silylation of alkoxysilanes with allylsilanes (via silanol intermediates) under mild conditions. Unsaturated siloxane products are used
The invention relates to the use of siloxanes as vaporizable carriers, in particular to the use of siloxanes in cosmetic formulations, and to cleaning and care products, to processes for the preparation of the siloxanes, and to compositions comprising them.