Diisopropylethylamine → 2-[4-(3-Chloropyridin-2-yl)piperazin-1-yl]-6-trifluoromethyl-1H-benzoimidazole

Participants

Reaction Steps

A mixture of the hydrochloride salt from step (b) above (0.564 g, 2.4 mmol), 2-chloro-6-trifluoromethyl-1H-benzoimidazole (0.27 g, 1.22 mmol, Example 1c) and N,N-diisopropylethylamine (0.84 mL, 4.8 mmol, Aldrich) in MeCN (1 mL) was subjected to microwave irradiation at 180° C. with stirring for 20 min. The solvent was removed in vacuo and the residue was purified by silica gel chromatography, eluting with 30% EtOAc/hexane, to give the title compound as a white solid. M.p. 208-210° C. MS (ESI, pos. ion) m/z: 382 (M+1).

Provenance & Evidence