Stepwise Introduction Of Different Substituents To -Chloro--Hydrooligosilanes: Convenient Synthesis Of Unsymmetrically Substituted Oligosilanes

A series of unsymmetrically substituted oligosilanes were synthesized via stepwise introduction of different substituents to alpha-chloro-omega-hydrooligosilanes. The reactions of alpha-chloro-omega-hydrooligosilanes with organolithium or Grignard reagents gave hydrooligosilanes having various alkyl, alkenyl, alkynyl and aryl groups. Thus-obtained hydrooligosilanes were converted into alkoxyoligosilanes by ruthenium-catalyzed dehydrogenative alkoxylation with alcohols.