Synthesis of benzothieno[2,3-b]thiophenes, [2,3-b:3′,2′-d]-dithienothiophenes and their selenium derivatives via electrophilic cyclization and McMurry cyclization

被引:14
|
作者
Geng, Weizhi [1 ,2 ]
Wang, Hanliu [1 ,2 ]
Wang, Zitao [1 ,2 ]
Zhang, Shaoguang [1 ,2 ]
Zhang, Wen-Xiong [1 ,2 ]
Xi, Zhenfeng [1 ,2 ,3 ]
机构
[1] Peking Univ, Coll Chem, BNLMS, Beijing 100871, Peoples R China
[2] Peking Univ, Coll Chem, Minist Educ, Key Lab Bioorgan Chem & Mol Engn, Beijing 100871, Peoples R China
[3] Chinese Acad Sci, SIOC, State Key Lab Organomet Chem, Shanghai 200032, Peoples R China
关键词
Benzothieno[2,3-b]thiophene; Dilithio reagent; Dithienothiophene; Electrophilic cyclization; McMurry cyclization; FIELD-EFFECT TRANSISTORS; LOW-VALENT TITANIUM; CROSS-CONJUGATED OLIGOTHIOPHENES; ONE-STEP SYNTHESIS; HIGH-PERFORMANCE; ASYMMETRIC-SYNTHESIS; CARBON-SULFUR; ORGANIC SEMICONDUCTOR; CATALYZED CYCLIZATION; COUPLING REACTIONS;
D O I
10.1016/j.tet.2012.01.088
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Benzothieno[2,3-b]thiophenes, [2,3-b:3',2'-d]-dithienothiophenes, and their selenium derivatives were synthesized in good yields from readily available 3-ethynyllithio-benzo[b]thiophenyllithio compounds, sulfur or selenium, and 2 equiv of acid chlorides. Two heteroarene rings were constructed by a twofold cyclization via an acid chloride-induced electrophilic ring closing and the McMurry cyclization using Zn/TiCl4 reagents. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:5283 / 5289
页数:7
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