Alkyl, vinyl and aryl substituted carbazoles at the 3- and 6-positions are prepared in high yield from the corresponding 3,6-dibromocarbazole via nickel catalyzed coupling with Grignard reagents (Corriu-Kumada coupling).
经由
镍与
格氏试剂的偶联(Corriu-Kumada偶联),由相应的
3,6-二溴咔唑高产率地制备3-位和6-位烷基,
乙烯基和芳基取代的
咔唑。