反应详情

温度

0 °C

To a solution of 5-(3-(aminomethyl)-2,6-dimethylphenyl)-2-(4-(trifluoromethyl)phenyl)-2H-1,2,4-triazol-3(4H)-one (Intermediate-66, 0.050 g) in dry THF (5 mL), TEA (3 mL) was added and stirred the reaction mixture for 20 minutes. The reaction mixture was cooled to 0° C. and pivaloyl chloride (0.05 g, 0.563 mmol) was added and stirred for 3 h at RT. After completion of the reaction, the reaction mass was quenched with water, extracted with DCM:MeOH. The organic layer was separated, concentrated, and purified by column chromatography to afford 0.012 g of the desired title product. 1H NMR (400 MHz, DMSO d6): δ 1.15 (s, 9H), 2.18 (s, 3H), 2.22 (s, 3H), 4.24 (d, J=12.6 Hz, 2H), 7.19 (d, 1H), 7.25 (d, 1H), 7.84 (d, J=5.7 Hz, 2H), 8.0 (t, 1H), 8.20 (d, J=6.4 Hz, 2H), 12.30 (br s, 1H); MS (m/z): 447.20 (M+H)+.

1. stirringstirred for 3 h at RT
2. customAfter completion of the reaction
3. customthe reaction mass was quenched with water
4. extractionextracted with DCM
5. customThe organic layer was separated
6. concentrationconcentrated
7. custompurified by column chromatography