Cp2ZrCl2-catalyzed synthesis of 2-aminovinyl benzimidazoles under microwave conditions
A microwave-assisted general method for the synthesis of 2-aminovinyl benzimidazoles has been developed. Treatment of the 1,2-phenylenediamines and N-arylated/N,N-dialkylated 3-aminoacroleins with bis(cyclopentadienyl)zirconium(IV) dichloride (Cp2/s