反应详情

To a stirred solution of 3-methyl-1H-pyrazole-5-carboxylic acid (104 mg, 0.83 mmol) in DCM (2.0 ml) was added DIPEA (0.144 mL 0.81 mmol). EDCI (159 mg, 0.83 mmol) and HOBt (112 mg, 0.83 mmol). After 10 min 2-(3-(3,4-dichloro-phenyl)-1H-pyrazol-1-yl)ethanamine (102 mg, 0.40 mmol) was added to the reaction mixture as a solution in DCM (2.0 ml). The reaction mixture was stirred at RT overnight. The reaction mixture was diluted with DCM and washed with saturated aqueous NaHCO3 solution and water. The organic phase was dried over Na2SO4, evaporated and purified by chromatography (CombiFlash, 1st column silica, eluent: 0-10% MeOH/DCM; 2nd column C-18 RP, eluent: 0-100% MeCN/water) to obtain 65 mg (45%) of the title compound. 1H-NMR (400 MHz; d6-DMSO): δ 2.24 (s, 3H), 3.64 (q, 2H), 4.31 (t, 2H), 6.36 (s, 1H), 6.81 (d, 1H), 7.65 (d, 1H), 7.77 (d, 1H), 7.80 (dd, 1H), 8.00 (d, 1H), 8.23 (s, 1H), 12.88 (s, 1H).

1. washwashed with saturated aqueous NaHCO3 solution and water
2. dry with materialThe organic phase was dried over Na2SO4
3. customevaporated
4. custompurified by chromatography (CombiFlash, 1st column silica, eluent: 0-10% MeOH/DCM; 2nd column C-18 RP, eluent: 0-100% MeCN/water)