Phenylenbis(silandiyl‐triflate) als neuartige Synthesebausteine für vielfältig strukturierte Organosilizium‐Polymere

Phenylenebis(silandiyl triflates) – New Synthetic Building Blocks for Variously Structured Organosilicon Polymers Ortho‐, meta‐, and para‐substituted phenylenebis(silandiyl triflates) are prepared as new useful building blocks for the synthesis of polymers with a regular alternating arrangement of an organosilicon unit and a π‐electron system (phenylene or ethynylene) in the backbone. Such polymers can be used as photoresists, semiconducting materials or precursors of silicon carbide. The phenylenebis(silandiyl‐triflates) 5a–c are obtained by protodesilylation of the corresponding (allylsilyl)‐ or [(diethylamino)silyl]benzenes 3a–c and 4a–c, respectively, with trifluoromethanesulfonic acid. Reactions with dinucleophiles like Li2C2 and Ph2Si(OH)2 lead to variously structured organosilicon polymers (see Eqns. 11 and 12), which are characterized by spectroscopic methods.