Ethyl Bromide → 2-(6-benzyloxy-3-pyridyl)-5-cyclopropyl-6-[ethyl(methylsulfonyl)amino]-N-methyl-indazole-3-carboxamide

Participants

Reaction Conditions

Reaction Steps

2-(6-benzyloxy-3-pyridyl)-5-cyclopropyl-6-(methanesulfonamido)-N-methyl-indazole-3-carboxamide (109) ESI-MS m/z calculated for [M+H]+: 492.1 was prepared according to procedure outlined in Method A using 6-benzyloxypyridin-3-amine instead of 4-bromoaniline. To a solution of compound (109) (120 mg, 0.24 mmol) in acetonitrile (10 mL) was added potassium carbonate (100 mg, 0.72 mmol) followed by bromoethane (0.09 mL, 1.2 mmol). The mixture was heated to 80° C. and stirred for 1.5 h. The mixture was cooled to RT and the solvent was removed under reduced pressure. The residue was diluted with ethyl acetate (10 mL), washed with water (2 mL), brine (2 mL), dried (MgSO4) and concentrated in vacuo to afford 2-(6-benzyloxy-3-pyridyl)-5-cyclopropyl-6-[ethyl(methylsulfonyl)amino]-N-methyl-indazole-3-carboxamide (i) (100 mg, 80%). This material was used without purification.

Provenance & Evidence