tert-butyl 5-(2-(3-(2-(isopropylamino)-2-oxoethoxy)phenyl)-7-methoxy-6-(2-methoxyethoxy)quinazolin-4-ylamino)-1H-indazole-1-carboxylate → 2-(3-(4-(1H-indazol-5-ylamino)-7-methoxy-6-(2-methoxyethoxy)-quinazolin-2-yl)phenoxy)-N-isopropylacetamide

Participants

Reaction Steps

The crude tert-butyl 5-(2-(3-(2-(isopropylamino)-2-oxoethoxy)phenyl)-7-methoxy-6-(2-methoxyethoxy)quinazolin-4-ylamino)-1H-indazole-1-carboxylate from the previous step was taken up in CH2Cl2 (2 mL) and TFA (5 mL). The mixture was stirred at RT for 2 h. The mixture was concentrated in vacuo and a portion of the residue was purified by preparative HPLC (10-35-90, 10-30-90, 0-15-90, 5-20-90 and 20-40-90 methods) to give 2-(3-(4-(1H-indazol-5-ylamino)-7-methoxy-6-(2-methoxyethoxy)-quinazolin-2-yl)phenoxy)-N-isopropylacetamide (0.039 g, 68.4 mmol). MS 557 (M+1). HPLC retention time 5.48 mins.

Provenance & Evidence