Catalytic Oxidation of C( sp3)H Bonds Induced by a Radical Cation Salt: Construction of 1,4-Dihydropyridines Using a Fragment-Reassembly Strategy.

A fragment-reassembly strategy was applied to the construction of 1,4-dihydropyridines and phosphorus-substituted 1,4-dihydropyridines under catalytic radical cation salt-induced C( sp)³H functionalization of glycine derivatives. Mechanistic studies show that domino C(sp)³H bond oxidation and CN bond cleavage reactions are involved. [ABSTRACT FROM AUTHOR]