Ambidextrous Catalytic Access to Dithieno[3,2-b:2 %26apos;,3 %26apos;-d]thiophene (DTT) Derivatives by Both Palladium-Catalyzed C-S and Oxidative Dehydro C-H Coupling

作者：Oechsle Peter; Paradies Jan^*

来源：Organic Letters, 2014, 16(16): 4086-4089.

DOI：10.1021/ol501752f

A modular two-step synthesis of dithieno[3,2-b:2%26apos;,3%26apos;-d]thiophene (DTT) derivatives by C-S cross-coupling and oxidative dehydro C-H coupling is herein described. Dibenzo[d,d%26apos;]thieno[3,2-b;4,5-b%26apos;]dithiophene (DBTDT) and associated two donor (anisyl) and acceptor (acetyl) substituted DTT derivatives were synthesized by palladium-catalyzed cross-coupling sequences in 17% to 71% yield over two steps. The 5,5%26apos;-disubstituted DTT derivatives were characterized in terms of their photophysical (UV and fluorescence spectroscopy) and electrophysical (cyclovoltammography) properties.

• 出版日期2014-8-15