Highly efficient vinylaromatics generation via iron-catalyzed sp3 C–H bond functionalization CDC reaction: a novel approach to preparing substituted benzo[α]phenazines

An iron-catalyzed benzylic vinylation was developed to transfer the carbon atom in the N,N-dimethyl moiety of N,N-dimethylacetamide (or N,N-dimethylformamide) to 2-methyl azaarenes to generate 2-vinyl azaarenes.