Dendritic and hyperbranched polyphenylenes via a simple Diels-Alder route

被引:127
作者
Morgenroth, F [1 ]
Mullen, K [1 ]
机构
[1] MAX PLANCK INST POLYMER RES,D-55128 MAINZ,GERMANY
关键词
D O I
10.1016/S0040-4020(97)00967-8
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A Diels-Alder route to dendritic and hyperbranched polyphenylenes, based on hexa(penta)phenylbenzene units, is described. Using ethynyl-, propynyl- and phenylethynyl-substituted tetraphenylcyclopentadienones 1c-e, hyperbranched polymers with molecular weights M-w as high as 107,000 g mol(-1) are obtained. The new dendritic polyphenylene 5c is synthesized starting from 3,3',5,5'-tetraethynylbiphenyl (2c) via a repetitive Diels-Alder-deprotection sequence, employing tetraphenylcyclopentadienones 1a and 1b. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:15349 / 15366
页数:18
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