2-Bromo-1-(3-bromophenyl)ethan-1-one → ethyl 1-{[4-(3-bromophenyl)-1,3-thiazol-2-yl]methyl}-1H-pyrazole-4-carboxylate

Participants

Reaction Steps

To a solution (5 mL) of the compound (1.1 g, 5.16 mmol) obtained in Example 1b in ethanol was added 2-bromo-1-(3-bromophenyl)ethanone (1.6 g, 5.67 mmol), and the mixture was heated under reflux for 3 hr. The mixture was allowed to cool to room temperature and the solvent was evaporated under reduced pressure. The obtained crude product was washed with ethyl acetate to give the title compound (1.44 g, 71%) as white crystals.

Provenance & Evidence