| 摘要 |
NEW MATERIAL:1,2,3,4-Tetrakis-(4-dimethylaminophenyldimethylsilyl)-1,2,3,4- tetramethylcyclotetrasilane of formula I. USE:Useful as electronic materials such as a photo-resist material, an organic semiconductor, a non-linear optical material and an optical information recording material or as a pre-ceramic material. PREPARATION:The objective compound of formula I can be produced by reacting 1,1-dichloro-1,2,2-trimethyl-2-(4-dimethylaminophenyl)disilane of formula II with preferably 2-3 times equivalent of an alkali metal or alkaline-earth metal in an aprotic solvent (e. g. n-pentane or benzene). The compound of formula II used as a starting substance is a novel substance, which can be produced by reacting 1,1,2-trichloro-1,2,2-trimethyldisilane of formula III with 4- dimethylaminophenyl-magnesium halide in the presence of a transition metal catalyst. |
