Synthesis of Alkynylated Selenophenes by Site-Selective Sonogashira Reactions of Tetrabromoselenophene
作者:Peter Ehlers、Tung T. Dang、Tamás Patonay、Alexander Villinger、Peter Langer
DOI:10.1002/ejoc.201201440
日期:2013.4
tetraalkynylated selenophenes were prepared by site-selective Sonogashira reactions of tetrabromoselenophene. Aryl-, alkyl-, and trimethylsilylacetylenes were suitable substrates for this procedure. The first attack occurred regioselectively at C-2 and C-5. In addition, differently diarylated dialkynylselenophenes were prepared using site-selective Suzuki and Sonogashira reactions.
单、二和四炔化硒酚是通过四溴硒酚的位点选择性 Sonogashira 反应制备的。芳基-、烷基-和三甲基甲硅烷基乙炔是该过程的合适底物。第一次攻击区域选择性地发生在 C-2 和 C-5。此外,使用位点选择性 Suzuki 和 Sonogashira 反应制备了不同二芳基化二炔基硒酚。