Abstract: The reaction of ethyl 2-oxo-2H-chromene-3-carboxylate with hydrazine followed by condensation of the resulting hydrazone with different aromatic aldehydes give the corresponding Schiff bases 5a-e. Reaction of these Schiff bases with mercaptoacetic acid furnishes the target thiazolidinone molecules 6a-e. The newly synthesized compounds have been screened for antibacterial and analgesic activities.
![2H-1-Benzopyran-3-carboxylicacid, 2-oxo-, 2-[(4-chlorophenyl)methylene]hydrazide结构式](https://image.chemsrc.com/caspic/154/30866-44-5.png)