Diisopropylethylamine → tert-butyl 5-(2-(3-(piperidine-4-carboxamido)phenyl)quinazolin-4-ylamino)-1H-indazole-1-carboxylate

Participants

Reaction Steps

A suspension of tert-butyl 5-(2-(3-aminophenyl)quinazolin-4-ylamino)-1H-indazole-1-carboxylate (126 mg, 0.278 mmol), 1-(tert-butoxycarbonyl)piperidine-4-carboxylic acid (79 mg, 0.347 mmol), PyBOP® (212 mg, 0.455 mmol) and DIEA (250 μL, 1.43 mmol) in CH2Cl2 (10 mL) was stirred at RT for 72 h. Reaction mixture was diluted with more CH2Cl2 (50 mL) and extracted with H2O (3×). Organic layer was dried under Na2SO4 and concentrated in vacu. Crude product was purified by prep TLC to give the desired product tert-butyl 5-(2-(3-(piperidine-4-carboxamido)phenyl)quinazolin-4-ylamino)-1H-indazole-1-carboxylate.

Provenance & Evidence