作者:Masaki Shimizu、Kenji Mochida、Masaki Katoh、Tamejiro Hiyama
DOI:10.1007/s11426-011-4396-6
日期:2011.12
Benzosiloles fused to heterocycles such as thiophene, benzothiophene, and benzofuran, and indole- and benzosilole-fused dibenzosiloles were prepared by palladium-catalyzed intramolecular coupling of the corresponding 2-(arylsilyl)aryl triflates in good to high yields. Molecular and crystal structures of 5,7-dihydro-5,5,7,7-tetrakis(1-methylethyl)bis[1]benzosilolo-[2,3-b:3′, 2′-d]thiophene, 6-methyl-12
通过钯催化相应的2-(芳基甲硅烷基)芳基三氟甲磺酸酯分子内偶联,制得了与噻吩,苯并噻吩和苯并呋喃等杂环稠合的苯并硅氧烷,以及与吲哚和苯并甲硅烷基稠合的二苯并甲硅烷基。5,7-二氢-5,5,7,7-四(1-甲基乙基)双[1]苯并硅氧烷-[2,3- b:3',2'- d ]噻吩,6-的分子和晶体结构甲基-12,12-二异丙基-12 H-吲哚并[3,2- b ] [1]硅芴和5,5,11,11-四异丙基-5,11 H-苯并硅氧烷[3,2- c通过X射线衍射分析确定]硅芴。与1,1-二异丙基二苯并甲硅烷相比,环己烷中的(二)苯并甲硅烷基衍生物的紫外吸收光谱发生了红移,这表明用杂环取代二苯并甲硅烷基的苯环以及吲哚和苯并甲硅烷基部分的稠合到二苯并甲硅烷基上使HOMO变窄。 π共轭体系的-LUMO间隙。噻吩稠合的苯并甲硅烷在溶液和固态下微弱地发荧光,而二苯并甲硅烷在环己烷和微晶中分别具有中等和高量子产率