Propionic Acid → N-{1-benzenesulfonyl-4-[1-(2-cyano-1-methyl-ethyl)-piperidin-4-ylamino]-1H-pyrrolo[2,3-b]pyridin-5-yl}-propionamide

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Reaction Conditions

Reaction Steps

Propionic acid (0.0176 ml, 0.320 mmol), HATU (0.122 g, 0.320 mmol), and diisopropylethylamine (0.062 ml, 0.358 mmol) were added sequentially to a solution of 3-[4-(5-amino-1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridin-4-ylamino)-piperidin-1-yl]-butyronitrile (0.134 g, 0.305 mmol) in a 4:1 mixture of CH2Cl2 and DMF (5 ml) at 25° C. The reaction mixture was stirred for 14 h at 25° C., then was partitioned between saturated NaHCO3 (4 ml) and CH2Cl2 (3 ml). The phases were separated using a phase separator column (Biotage) and the organic layer was concentrated under reduced pressure to afford crude N-{1-benzenesulfonyl-4-[1-(2-cyano-1-methyl-ethyl)-piperidin-4-ylamino]-1H-pyrrolo[2,3-b]pyridin-5-yl}-propionamide as a brown oil. LCMS (Method G, ESI): RT=0.60 min, m+H=495.3. This material was used in the next step below without additional purification or characterization.

Provenance & Evidence