Rhodium-Catalyzed Annulative Coupling of 3-Phenylthiophenes with Alkynes Involving Double C-H Bond Cleavages
作者:Tomonori Iitsuka、Koji Hirano、Tetsuya Satoh、Masahiro Miura
DOI:10.1002/chem.201303847
日期:2014.1.7
Double CH bond activation took place efficiently upon treatment of 3‐phenylthiophenes with alkynes in the presence of a rhodium catalyst and a copper salt oxidant to form the corresponding naphthothiophene derivatives. Dehydrogenative coupling with alkenes was also found to occur on the phenyl moiety rather than the thiophene ring. These reactions provide straightforward synthetic methods for π‐conjugated
在铑催化剂和铜盐氧化剂的存在下,用炔烃处理3-苯基噻吩后,有效地进行了双CH键活化,从而形成了相应的萘噻吩衍生物。还发现与烯烃的脱氢偶联发生在苯基部分而不是噻吩环上。这些反应从容易获得的简单结构单元为涉及噻吩单元的π共轭分子提供了简单的合成方法。