反应详情

温度

45 °C

Methylmagnesium bromide 3M in Et2O-solution (0.128 ml, 0.383 mmol) and dry THF (1 ml) were added into a flask and heated to 30° C. (S)—N-(1-(3-(3-chloro-4-cyano-5-fluorophenyl)-1H-pyrazol-1-yl)propan-2-yl)-2-methyl-1-(3-oxobutyl)-1H-imidazole-4-carboxamide (35 mg, 0.077 mmol) of Example 286(b) dissolved in THF (5 ml) was added very slowly. The reaction mixture was heated to 45° C. and stirred for 5 h. Another batch of methylmagnesium bromide 3M in EtO2-solution (0.128 ml, 0.383 mmol) was added and the mixture was stirred at RT overnight. Next day the reaction mixture was poured into 10 ml of saturated ammonium chloride, THF was evaporated and the remaining water phase was extracted with ethyl acetate. The ethyl acetate phases were combined, dried and evaporated. The product was purified by flash-chromatography. Yield 19.32%. 1H-NMR (400 MHz; DMSO-d6): δ 1.06 (d, 3H), 1.12 (s, 6H), 1.69-1.77 (m, 2H), 2.34 (s, 3H), 3.92-3.98 (m, 2H), 4.25-4.46 (m, 4H), 7.01 (d, 1H), 7.50 (s, 1H), 7.85 (d, 1H), 7.92 (dd, 1H), 8.00 (s, 1H), 8.03 (d, 1H).

1. additionwas added very slowly
2. stirringthe mixture was stirred at RT overnight
3. customwas evaporated
4. extractionthe remaining water phase was extracted with ethyl acetate
5. customdried
6. customevaporated
7. customThe product was purified by flash-chromatography