Trifluoroacetic acid → HCID 70664708, compound

Participants

Reaction Steps

To a solution of (S)-methyl 2-(1-(tert-butoxycarbonyl)-1H-indazol-5-yl)-7-methoxy-3-(2-methylpyrrolidin-1-yl)quinoxaline-6-carboxylate (310 mg, crude) in dichloromethane (32 ml) was added trifluoroacetic acid (8 ml). After stirring overnight at room temperature, the pH value was adjusted to 7 with aqueous sodium bicarbonate and extracted with dichloromethane (2×25 ml). The organic layers were combined, dried over anhydrous magnesium sulfate and concentrated under vacuum to give a residue, which was purified via silica gel chromatography (10% ethyl acetate in petroleum ether) to give (S)-methyl 2-(1H-indazol-5-yl)-7-methoxy-3-(2-methylpyrrolidin-1-yl)quinoxaline-6-carboxylate (240 mg) as yellow solid.

Provenance & Evidence