1-Hydroxybenzotriazole → 7-(2-Fluoro-4-methylsulfanyl-phenylamino)-pyrrolo[1,2-c]pyrimidine-6-carboxylic acid ((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-amide

Participants

Reaction Steps

7-(2-Fluoro-4-methylsulfanyl-phenylamino)-pyrrolo[1,2-c]pyrimidine-6-carboxylic acid (287 mg, 0.90 mmol), O—((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-hydroxylamine (133 mg, 0.90 mmol), HOBt (135 mg, 0.99 mmol), EDCI hydrochloride (191 mg, 0.99 mmol) and DIPEA (169 μL, 0.99 mmol) were dissolved in DMF (5 mL). The reaction was stirred at room temperature for 1 hour then concentrated in vacuo. The resultant residue was dissolved in ethyl acetate (10 mL), washed with aqueous saturated sodium bicarbonate solution (10 mL) and the aqueous fraction extracted twice with ethyl acetate (2×10 mL). The combined organic fractions were washed with brine, dried (MgSO4) and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, gradient 30-100% ethylacetate in cyclohexane) to yield the title compound as a brown solid (246 mg, 61%). LCMS (Method B): RT=3.28 min, M+H+=447.

Provenance & Evidence