A method for producing an asymmetric biaryl derivative which comprises dehalogenocoupling halogenated benzene derivatives, wherein a bromobenzene derivative of the formula:
wherein R is a lower alkyl group or a lower alkoxy group, which is attached at the 3- or 4-position, and a 2-chlorobenzene derivative of the formula:
wherein R' is a cyano group or an alkoxycarbonyl group, are reacted in pyridine in the presence of triphenylphosphine, an anhydrous nickel compound and a reducing metal to obtain an asymmetric biaryl derivative of the formula:
wherein R and R' are as defined above, and R is attached at the 3- or 4-position.
一种生产不对称双芳基衍
生物的方法,该方法包括卤代苯衍
生物的脱卤偶联,其中
溴苯衍
生物的式为
其中R为低级烷基或低级烷氧基,连接在3位或4位,以及式中的2-
氯苯衍
生物:
式中 R'为
氰基或烷氧羰基的 2-
氯苯衍
生物,在
三苯基膦、无
水镍化合物和还原
金属存在下,在
吡啶中反应,得到式中的不对称双芳基衍
生物:
其中 R 和 R'如上定义,R 连接在 3 位或 4 位。