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Phenylenbis(silandiyl‐triflate) als neuartige Synthesebausteine für vielfältig strukturierte Organosilizium‐Polymere
Author(s) -
Uhlig Wolfram
Publication year - 1994
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19940770409
Subject(s) - organosilicon , chemistry , trifluoromethanesulfonate , polymer , polymer chemistry , silylation , conformable matrix , organic chemistry , materials science , composite material , catalysis
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 Li 2 C 2 and Ph 2 Si(OH) 2 lead to variously structured organosilicon polymers (see Eqns. 11 and 12 ), which are characterized by spectroscopic methods.