Benzyl Bromide → Ethyl 1-benzyl-3-(4-chloro-2-fluorophenyl)-5-(trifluoromethyl)-1H-pyrrole-2-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of ethyl 3-(4-chloro-2-fluorophenyl)-5-(trifluoromethyl)-1H-pyrrole-2-carboxylate (1.33 g, 3.96 mmol) in dry MeCN (20 mL) was added K2CO3 (1.10 g, 7.92 mmol) and benzyl bromide (521 μL, 4.36 mmol). The reaction mixture was stirred overnight at 80° C. Addition of silica (ca. 2 g) was followed by filtration; the filtrate was concentrated in vacuo. The product was co-evaporated twice with toluene (30 mL), to result in 1.75 g (99%, 95% purity) of the desired product as a clear oil.

Provenance & Evidence