1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 86656242, compound

Participants

Reaction Steps

4-(2-Fluoro-4-iodophenylamino)-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid (360 mg, 0.71 mmol), O-(2-vinyloxyethyl)-hydroxylamine (79 mg, 0.77 mmol), HOBt (103 mg, 0.77 mmol), EDCI (147 mg, 0.77 mmol) and DIPEA (130 μL, 0.77 mmol) were dissolved in DMF (10 mL). The reaction mixture was stirred at room temperature for 16 hours 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 (20 mL), dried (MgSO4) and concentrated in vacuo. The resultant residue was subjected to flash chromatography (Si—SPE, gradient 0-100% ethyl acetate in cyclohexane) to yield the title compound as a yellow solid (346 mg, 81%). LCMS (Method B): RT=4.08 min, [M+H]+=604.

Provenance & Evidence