Morpholinobenzenes with up to four N-morpholino groups have been synthesized efficiently from the corresponding bromobenzenes via palladium catalyzed multiple aryl amination reactions. Surprisingly, hexabromobenzene (1) yielded selectively 1,2,4,5-(N,N,N,N)-tetra-(23) and 1,3,5-(N,N,N)-trimorpholinobenzene (14).
通过
钯催化的多重芳基胺化反应,从相应的
溴苯中高效合成了含有多达四个 N-吗啉基团的吗啉苯。令人惊讶的是,
六溴苯 (1) 可以选择性地生成 1,2,4,5-(N,N,N,N)-四吗啉苯 (23) 和 1,3,5-(N,N,N)-三吗啉苯 (14)。