Unsymmetrical 1,3-diaminobenzenes and diaminopyridines were efficiently prepared by reaction of 3-chloroanilines and chloroaminopyridines with amines via a nickel-catalysed amination. The Ni/2,2′-bipyridine catalyst is also effective for the sequential amination of aryl trichlorides. After a first selective monoamination of 1,3,5-trichlorobenzene, the obtained 3,5-dichloroanilines were subsequently transformed
通过使
3-氯苯胺和
氯氨基吡啶与
镍通过胺催化的胺化反应有效地制备了不对称的1,3-二
氨基苯和二
氨基吡啶。Ni / 2,2'-联
吡啶催化剂对于芳基三
氯化物的顺序胺化也是有效的。在对
1,3,5-三氯苯进行第一次选择性单胺化之后,随后将获得的
3,5-二氯苯胺转化为新型且不对称的
1,3,5-三氨基苯。