Regioselective Palladium(0)-Catalyzed Cross-Coupling Reactions and Metal-Halide Exchange Reactions of Tetrabromothiophene: Optimization, Scope and Limitations
metal‐halide exchangereactions of tetrabromothiophene provide a convenient approach to various 2,5‐disubstituted 3,4‐dibromothiophenes. 5‐Alkyl‐2‐trimethylsilyl‐3,4‐dibromothiophenes could be prepared in one pot by sequential addition of trimethylchlorosilane and alkyl bromides. The reaction of tetrabromothiophene with methyl chloroformate and subsequent Suzuki reactions afforded 3,4‐diaryl‐2,5‐bis(metho
Accessing π‐expanded heterocyclics beyond dibenzothiophene: Syntheses and properties of phenanthrothiophenes
作者:Samala Venkateswarlu、Suhendro Purbo Prakoso、Sushil Kumar、Yu‐Tai Tao
DOI:10.1002/jccs.201900509
日期:2020.3
A series of phenanthrothiophenes are designed and synthesized from polyarylthiophenes through regioselective Scholl reactions in one step using iron chloride as catalyst. The molecular structures of these heteroarenes displayed multiple twisted fjords, which perturb the shapes of the polycyclic frameworks to pack in slipped to near‐perfect face‐to‐face styles in parallel or antiparallel packings. Field‐effect
使用氯化铁作为催化剂,通过区域选择性的Scholl反应,由聚芳基噻吩设计并合成了一系列的噻吩噻吩。这些杂芳烃的分子结构显示出多个扭曲的峡湾,扰乱了多环骨架的形状,以平行或反平行堆积的方式滑移至接近完美的面对面样式。使用6,12-二氟联菲[9,10-b:9',10']噻吩单晶的场效应晶体管器件的空穴迁移率为0.22 cm 2 V -1 s -1。
Crafting diverse tetraphenylthiophene designs through comprehensive ‘classical’ Suzuki-Miyaura synthesis and electrochemical exploration
successful programmed synthesis of diversedesigns of tetraphenylthiophene derivatives (TPTs, 16 out of 24 probable structures) and the intermediate triphenylthiophene derivatives (12 out of 20 probable structures) using optimized ‘classical’ Suzuki-Miyaura cross-coupling conditions through multiple routes starting from a single precursor, tetrabromothiophene. Our first-ever electrochemical analysis of various
Tetraarylthiophenes were prepared by regioselective Suzuki cross-coupling reactions of tetrabromothiophene. (c) 2006 Elsevier Ltd. All rights reserved.