作者:Aymen Skhiri、Ridha Ben Salem、Jean-François Soulé、Henri Doucet
DOI:10.3762/bjoc.13.278
日期:——
Pd-catalyzed direct heteroarylation was investigated. From 2-bromoselenophene, only the most reactive heteroarenes could be employed to prepare 2-heteroarylated selenophenes; whereas, 2,5-dibromoselenophene generally gave 2,5-di(heteroarylated) selenophenes in high yields using both thiazole and thiophene derivatives. Moreover, sequential catalytic C2 heteroarylation, bromination, catalytic C5 arylation reactions
研究了2-溴和2,5-二溴硒烯在钯催化的直接杂芳基化反应中的反应性。从2-溴硒基中,仅可使用反应性最强的杂芳烃来制备2-杂芳基化硒烯。然而,使用噻唑和噻吩衍生物,通常以高收率得到2,5-二溴硒基苯撑的2,5-二(杂芳基化)硒烯。此外,顺序的催化C2杂芳基化,溴化,催化C5芳基化反应可从硒烯中分三步合成不对称的2,5-二(杂)芳基硒化亚硒烯衍生物。