Potassium Carbonate → tert-Butyl 5-(2-(3-(2-tert-butoxy-2-oxoethoxy)phenyl)quinazolin-4-ylamino)-1H-indazole-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl 5-(2-(3-hydroxyphenyl)quinazolin-4-ylamino)-1H-indazole-1-carboxylate (0.800 g, 1.76 mmol), tert-butyl 2-bromoacetate (130 μL, 0.88 mmol) and K2CO3 (0.972 g, 7.04 mmol) in DMF (35 mL) was heated at 80° C. for 2 h. Upon which additional tert-butyl 2-bromoacetate (130 μL, 0.88 mmol) was added, heating at 80° C. was continued for a further 1.5 h. The mixture was allowed to cool to RT and concentrated in vacuo. Diluted with CH2Cl2 and extracted with water (3×). Dried under Na2SO4 and concentrated in vacuo to give tert-Butyl 5-(2-(3-(2-tert-butoxy-2-oxoethoxy)phenyl)quinazolin-4-ylamino)-1H-indazole-1-carboxylate. (0.950 g, 1.68 mmol, 95%).

Provenance & Evidence