Sodium Bicarbonate → HCID 86662041, compound

Participants

Reaction Steps

To a solution of a mixture of methyl 5-chloro-3-{[4-(4-methylpiperazin-1-yl)phenyl]amino}pyrazine-2-carboxylate (Preparation Example 193) (20 mg) and THF (2 mL), O-methylhydroxylamine hydrochloride (14 mg) was added. To the reaction liquid, lithium hexamethyldisilazide (0.39 mL, 1M THF solution) was added under ice cooling and stirred for 20 minutes. The reaction liquid was poured into saturated aqueous sodium hydrogen carbonate and extracted with ethyl acetate, and then the organic layer was washed with saturated aqueous sodium chloride. After drying over anhydrous sodium sulfate, the solvent was distilled off under reduced pressure to give 5-chloro-N-methoxy-3-{[4-(4-methylpiperazin-1-yl)phenyl]amino}pyrazine-2-carboxamide (21 mg) as a yellow powder.

Provenance & Evidence