1-Hydroxybenzotriazole → HCID 68516497, compound

Participants

Reaction Steps

A round-bottomed flask was charged with tert-butyl 4-(1-(4-methoxybenzyl)-4-(4-amino-2-fluorophenoxy)-1H-pyrazolo[3,4-b]pyridin-3-yl)piperidine-1-carboxylate (84.3 mg, 0.1539 mmol), 2-(4-fluorophenyl)-3-oxo-2,3-dihydropyridazine-4-carboxylic acid (108.1 mg, 0.4618 mmol, prepared according to Example 19, step C), N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (147.6 mg, 0.7697 mmol), 1H-benzo[d][1,2,3]triazol-1-ol (104.0 mg, 0.7697 mmol), N-ethyl-N-isopropylpropan-2-amine (199.0 mg, 1.539 mmol) and DMF (10 mL). The reaction mixture was stirred at room temperature overnight. The reaction was partitioned between EtOAc and H2O. The phases were separated and the aqueous phase was re-extracted with EtOAc. The combined organic layers were dried (Na2SO4), filtered and concentrated to yield a crude product. The crude product was purified by silica gel chromatography (DCM/7 M NH3 in MeOH from 50/1 to 10/1, v/v) to afford the desired product (108.3 mg, 92.11%). LRMS (APCI pos): m/e 664 (M−99).

Provenance & Evidence