A novel and one-pot procedure for the synthesis of N-(phenylimino)indazole-1-carbothioamides was reported via three-component condensation of aldehydes, dithizone and dimedone in the presence of [bpy][FeCl4] under solvent-free conditions. This protocol has valuable features of mild and environmentally benign conditions, short reaction times and high yields of desired products.
S. Safaei, I. Mohammadpoor-Baltork, A. R. Khosropour, M. Moghadam, S. Tangestaninejad and V. Mirkhani, RSC Adv., 2014, 4, 2251 DOI: 10.1039/C3RA44064H
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