Functionalisation of Vinylsubstituted (Poly)Siloxanes and Silsesquioxanes via Cross-Metathesis and Silylative Coupling Transformations

Abstract

Applications of the catalytic transformations of vinyl group at silicon, i.e., cross-metathesis, silylative coupling with olefins and silylative coupling with acetylenes for functionalisation of vinylsubstituted (poly)organosiloxanes were overviewed. Cross-metathesis and silylative coupling of olefins with vinylsilicon compounds catalysed by ruthenium complexes were shown to constitute two valuable, complementary synthetic routes leading to functionalised (poly)siloxanes, cyclosiloxanes, silsesquioxanes and spherosilicates of great practical importance. Moreover, first examples of selective synthesis of variety of siloxanes with acetylene functionality via silylative coupling of acetylenes with vinylsiloxanes were described.