反应详情

To a suspension of lithium 7-(2-morpholinoethoxy)imidazo[1,2-a]pyridine-3-carboxylate (42 mg, 0.142 mmol) in DCM were added oxalyl chloride (1.1 equivalents) and a drop of DMF. The mixture was stirred until gas evolution stopped. To the reaction mixture were then added 1-benzyl-1H-indazol-4-amine (31.6 mg, 0.142 mmol) and Hunig's base (1.2 equivalents). The reaction was stirred at ambient temperature for two hours and then concentrated. The residue was triturated with diethyl ether followed by chromatographic purification on silica with 10% MeOH/DCM as eluent to provide 8.6 mg of the desired product as a white solid. MS (ES+APCI) m/z=497 (M+H) detected.

1. stirringThe reaction was stirred at ambient temperature for two hours
2. concentrationconcentrated
3. customThe residue was triturated with diethyl ether
4. customfollowed by chromatographic purification on silica with 10% MeOH/DCM as eluent