Reaction of Polarised α-KetoketeneN,N-Acetals with Dimethyl Acetylenedicarboxylate: Synthesis of Novel 5-Aroyl-1-aryl-6-arylamino-4-methoxycarbonyl-2-oxo-1,2-dihydropyridines
Reaction of Polarised α-Ketoketene<i>N,N</i>-Acetals with Dimethyl Acetylenedicarboxylate: Synthesis of Novel 5-Aroyl-1-aryl-6-arylamino-4-methoxycarbonyl-2-oxo-1,2-dihydropyridines