Diisopropylethylamine → HCID 67343374, compound

Participants

Reaction Conditions

Reaction Steps

Cyclopropylacetic acid (0.300 g, 3.00 mmol), HATU (1.14 g, 3.00 mmol), and diisopropylethylamine (0.627 ml, 3.60 mmol) were added sequentially to a solution of 3-(5-amino-1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridin-4-ylamino)-piperidine-1-carboxylic acid 9H-fluoren-9-ylmethyl ester (1.78 g, 3.00 mmol) in DMF (50 ml) at 25° C. The reaction mixture was stirred for 1.5 h at 25° C., then was concentrated under reduced pressure. The residue was partitioned between half-saturated NaHCO3 (125 ml) and EtOAc (2×150 ml). The combined organic layers were dried over Mg2SO4, filtered, and the filtrate was concentrated under reduced pressure to give crude 3-[1-benzenesulfonyl-5-(2-cyclopropyl-acetylamino)-1H-pyrrolo[2,3-b]pyridin-4-ylamino]-piperidine-1-carboxylic acid 9H-fluoren-9-ylmethyl ester as a brown foam. LCMS (Method G, ESI): RT=1.24 min, m+H=676.4. This material was used in the next step below without additional purification or characterization.

Provenance & Evidence