反应详情

A solution of N-cyclopropyl-3-(1H-indazol-5-yl)-4-methylbenzamide (Example 17) (0.65 g) in dry DMF (26 ml) was treated with sodium hydride (60% oil dispersion, 0.134 g) under nitrogen. After 5 min methyl chloroacetate (0.29 g) was added and the mixture was stirred for 2 h. Aqueous ammonia (2M, 10 ml) was added and the solvent was removed under vacuum. The residue was purified by column chromatography on silica eluting with cyclohexane:ethyl acetate (2:1 to 1:1) to give the title compound (0.56 g).

1. customthe solvent was removed under vacuum
2. customThe residue was purified by column chromatography on silica eluting with cyclohexane:ethyl acetate (2:1 to 1:1)