Intramolecular cyclization of β,β-difluorostyrenes bearing an iminomethyl or a diazenyl group at the ortho position: synthesis of 3-fluorinated isoquinoline and cinnoline derivatives
Abstract
o-Formyl-substituted β,β-difluorostyrenes readily react with NH2OH·HCl or NH4OAc to afford CH– or HN
CH–). β,β-Difluorostyrenes bearing an o-diazenyl group (HN
N–), generated by