Facile Cu(OTf)2-catalyzed preparation of 9-tosylaminofluorene derivatives from o-arylated N-tosylbenzaldimines

摘要

The 9-tosylaminofluorene derivatives were synthesized conveniently by Cu(OTf)2-catalyzed aza-Friedel Crafts reaction of o-arylated N-tosylbenzaldimines in high yields. This is an efficient, atom-economic, an green method.