期刊
TETRAHEDRON
卷 66, 期 22, 页码 3973-3977出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.03.046
关键词
Dibenzofulvene; 9-Fluorenyltriphenylphosphonium bromide; Wittig
资金
- Hong Kong Research Grants Council [HKBU 2105/06E]
A series of novel substituted (2-methoxy, 2-nitro, 2-bromo, 2-iodo, 2-cyano, and 2-acetyl) and di-substitiuted (2-bromo-7-methoxy, 2-bromo-7-propoxy, 2-bromo-7-hexoxy, 2-nitro-7-propoxy, 2-nitro-7-hexoxy, and 2,7-di-bromo) dibenzofulvenes have been prepared from the corresponding fluorenes with fair to very good overall yields (35.7-66.7%) based on the Wittig chemistry. The new approach enjoyed much simpler experimental procedures and has the advantage of higher functional group tolerance. Preliminary results on their polymerization using solution free-radical approach are also presented. (C) 2010 Elsevier Ltd. All rights reserved.
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