Efficient Synthesis of Substituted Dithieno[2,3-b:3',2'-d]siloles and A 10-Membered Silicon-Bridged Thiophene-Based Cyclophane
作者:Caiyun Zhao、Jianwu Shi、Chunli Li、Hua Wang
DOI:10.2174/157017811799304179
日期:2011.12.1
Two new substituted dithieno[2,3-b:3',2'-d]siloles, 7,7-diphenyl-2,5-bis(trimethylsilyl) dithieno[2,3-b:3',2'- d]silole (1) and 7,7-diphenyl-2,5-dichloro-dithieno[2,3-b:3',2'-d]silole (2) were synthesized in 79.4% and 31.6% yields, respectively via the cross-coupling of 1,4-dilithiobutadienes with dichlorodiphenylsilane. An unexpected tetrachlorosubstituted 10-membered silicon-bridged thiophene-based cyclophane (3) was obtained in a high yield as 46.9% when the cross-coupling of 1,4-dilithiobutadiene reacted with dichlorodimethylsilane. In addition, the crystal structures of title compounds are described.
两个新的取代二噻吩并[2,3-b:3',2'-d]硅咯,7,7-二苯基-2,5-双(三甲基甲硅烷基)二噻吩并[2,3-b:3',2'-d ]silole (1) 和 7,7-二苯基-2,5-二氯-二噻吩并[2,3-b:3',2'-d]silole (2) 的合成产率分别为 79.4% 和 31.6% 1,4-二锂丁二烯与二氯二苯基硅烷的交叉偶联。当1,4-二锂硫代丁二烯与二氯二甲基硅烷交叉偶联时,出人意料地以46.9%的高收率获得了四氯取代的10元硅桥联噻吩基环烷(3)。此外,还描述了标题化合物的晶体结构。