噻吩
化学
部分
取代基
单体
聚噻吩
聚合
高分子化学
己烷
有机化学
聚合物
导电聚合物
作者
Atsunori Mori,Kenji Ide,Shunsuke Tamba,Satoru Tsuji,Yuka Toyomori,Takeshi Yasuda
出处
期刊:Chemistry Letters
[The Chemical Society of Japan]
日期:2014-05-05
卷期号:43 (5): 640-642
被引量:24
摘要
Regioregular poly(3-substituted thiophene) derivative bearing pentamethyldisiloxane moiety at the 3-substituent is prepared by nickel-catalyzed polymerization reactions with dehydrobrominative or debrominative generation of the organometallic monomer. The monomer precursors 2-bromo-3-(4-pentamethyldisiloxybutan-1-yl)thiophene (1a) and 2,5-dibromo-3-(4-pentamethyldisiloxybutan-1-yl)thiophene (1b) are prepared from 3-methylthiophene with 4–5 steps in overall good yields. Treatment of 1a with TMPMgCl·LiCl at room temperature for 3 h forms an organometallic monomer and following the addition of a nickel catalyst affords the corresponding polythiophene bearing a disiloxane moiety in the side chain. The reaction of 1b with Grignard reagent leads to the similar monomer and addition of a catalytic amount of [NiCl2(dppe)] also affords polythiophene in highly regioregular manners. The obtained polythiophene is found to be dissolved in a hydrocarbon such as hexane.
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