(1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanamine hydrochloride → 1-((1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methyl)-3-(4-(1,3-dihydroxypropan-2-yl)-3-fluorophenyl)urea

Participants

Reaction Steps

To a stirred solution of (1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanamine hydrochloride (153 mg, 0.4918 mmol, 1.0 eq) in DMF (5 mL) was added TEA (0.205 mL, 1.4754 mmol, 3.0 eq) followed by phenyl 4-(1,3-dihydroxypropan-2-yl)-3-fluorophenylcarbamate (150 mg, 0.4918 mmol, 1.0 eq) at RT and the mixture stirred for 16 h. The reaction mixture was diluted with water (10 mL) and extracted with ethyl acetate (15 mL). The organic layer was washed with water (10 mL) and brine (5 mL), dried over anhydrous Na2SO4, and evaporated under vacuum. The crude product was purified by neutral alumina column chromatography using MeOH/CHCl3 (1:19) as eluent to get 1-((1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methyl)-3-(4-(1,3-dihydroxypropan-2-yl)-3-fluorophenyl)urea (85.5 mg; 36%) as off white solid; TLC system: MeOH/CHCl3 (1:9); Rf: 0.5).

Provenance & Evidence