1-Hydroxybenzotriazole → N-(3-fluoro-4-(2-iodothieno[3,2-b]pyridin-7-yloxy)phenyl)-2-oxopyrrolidine-3-carboxamide

Participants

Reaction Steps

A flask was charged with 3-fluoro-4-(2-iodothieno[3,2-b]pyridin-7-yloxy)aniline (Example 6, Step A, 150.0 mg, 0.388 mmol), 2-oxopyrrolidine-3-carboxylic acid (100.3 mg, 0.777 mmol), N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (223.4 mg, 1.17 mmol), 1H-benzo[d][1,2,3]triazol-1-ol (157.5 mg, 1.17 mmol), N-ethyl-N-isopropylpropan-2-amine (0.347 ml, 1.94 mmol) and THF (100 mL). The reaction mixture was stirred at room temperature until the starting material had been consumed (overnight). Then the reaction mixture was partitioned between EtOAc (100 mL) and H2O (100 mL). The phases were separated and the aqueous phase was re-extracted with EtOAc (3×100 mL). The combined organic layers were dried (Na2SO4), filtered and concentrated to yield a crude product. The crude product was purified by silica gel chromatography (EtOAc/Hexane from 1/4 to 4/1, v/v) to afford product (85.0 mg, 44%). LRMS (APCI pos): >97% purity, 254 nm, m/e 498 (M+1).

Provenance & Evidence