Formaldehyde → HCID 44467683, compound

Participants

Reaction Steps

To a solution of 6-(5-chloro-4-(2-(isopropylsulfonyl)phenylamino)-pyrimidin-2-ylamino)-5-isopropoxy-2-(piperidin-4-yl)isoindolin-1-one (52 mg, 0.09 mmol) in DMF (1.0 mL) was added (S)-1-(tert-butoxycarbonyl)pyrrolidine-2-carboxylic acid (19 mg, 0.09 mmol), HATU (50 mg, 0.130 mmol), and DIEA (0.174 mmol, 30 μL) sequentially. The reaction mixture was stirred for 1 h, then partitioned between EtOAc and water. The organic extracts were dried (Na2SO4), and concentrated in vacuo. The crude product was stirred in a solution of DCM (1 mL) and TFA (1 mL) for 1 h, then concentrated in vacuo. To the solution of the resulting crude product in 1 mL of MeOH and 1 mL of THF was added 3 drops of AcOH, formaldehyde (37 wt. % solution in water, 0.09 mmol, 7 mg). After stirring for 1 h, sodium cyanoborohydride (0.18 mmol, 11 mg) was added, and the reaction mixture was stirred for another 30 min. The reaction mixture was filtered and the resulting filtrate was purified by preparative RP-HPLC to afford (S)-6-(5-chloro-4-(2-(isopropylsulfonyl)phenylamino)-pyrimidin-2-ylamino)-5-isopropoxy-2-(1-(1-methylpyrrolidine-2-carbonyl)piperidin-4-yl)isoindolin-1-one.

Provenance & Evidence