反应详情

温度

60 °C

To a round bottom flask was added 2-(2-chlorophenyl)-5-trifluoromethyl-2H-pyrazole-3-carbonyl chloride (160 mg, 0.520 mmol) in a solution of anhydrous CHCl3 (10 mL). To the reaction solution was added 3-methylsulfonyl benzylamine (122 mg, 0.661 mmol), TEA (150 μL, 1.10 mmol), and DMAP (67 mg, 0.549 mmol). The reaction solution was allowed to stir at 60° C. for 5 hrs. The reaction solution was diluted with EtOAc (150 mL), poured into a separatory funnel and washed with aq. NH4Cl. The partitioned organic phase was dried over Na2SO4, filtered, and concentrated under reduced pressure on the rotavapor. The crude material was chromatographed through a silica gel column using a solvent gradient of 100% hexane to 30% EtOAc to afford 50 mg of title compound (20%). 1H NMR (CDCl3): δ 7.83 (m, 1H), 7.79 (s, 1H), 7.48-7.58 (m, 4H), 7.42-7.46 (m, 2H), 7.05 (s, 1H), 6.66 (t, J=6 Hz, 1H), 4.58 (d, J=6 Hz, 2H), 3.03 (s, 3H); MS (ES): 458.1 [M+H]+.

1. additionpoured into a separatory funnel
2. washwashed with aq. NH4Cl
3. dry with materialThe partitioned organic phase was dried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure on the rotavapor
6. customThe crude material was chromatographed through a silica gel column