Substituted Tetrahydropyridine and Dihydropyridobenzoxazine Ring Syntheses
摘要:
The ternary condensation of ethyl acetoacetate, 3-methoxysalicylaldehyde, and substituted benzaldehydes in the presence of ammonium acetate gave 1,2,5,6-tetrahydropyridine (1) and 6H-8,9-dihidropyrido[1,2-c][1,3]-benzoxazine (2) derivatives.