Abstract
Abstract A new efficient route for selective synthesis of various, novel alkynyl(vinyl)substituted silicon ( 6 ) and alkynyl[( E )-alkenyl]substituted silicon compounds ( 9 ) via silylative coupling of alkynes and their products catalyzed by ruthenium(+2) complexes is described. The tandem procedure facilitates the formation of 9 synthesized in a high yield and stereoselectivity by a sequential silylative coupling of terminal alkynes with divinylsubstituted silicon compounds followed by silylative coupling reaction of 6 with styrenes in the presence of ruthenium hydride complexes ([RuHCl(CO)(PR 3 ) 3−n ]; R = Cy ( n = 1), i -Pr ( n = 1), Ph ( n = 0)).
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