Abstract
Condensation of 1 with aromatic aldehydes under basic conditions afforded the styryl compounds (2a-c). Cycloaddition reaction of hydrazine hydrate, hydroxylamine hydrochloride, urea and thiourea on 2a-c gave pyrazolino, isoxazolino, pyrimidino and pyrimidine thiono derivatives (3a-c), (4a-c), (5a-c) and (6a-c) respectively. Condensation of 1 with nitroso compounds gave Schiff's bases (7a-c). Cycloaddition reaction of monochloro acetyl chloride to (7a-c) afforded beta-lactam derivatives (8a-c), also, cycloaddition reaction of thioglycollic acid to (7a-c) gave thiazolidinone derivatives (9a-c).