Diisopropylethylamine → HCID 71610613, compound

Participants

Reaction Steps

To a solution of 2-cyclopropyl-oxazole-4-carboxylic acid 1h (122.2 mg, 0.79 mmol) in DMF (5.0 mL) HATU (404.4 mg, 1.06 mmol) was added and stirred for 3 min. N,N-diisopropylethylamine (0.46 mL, 2.66 mmol) was added to this followed by 5-amino-2-chloro-N-[3-(2-oxo-pyrrolidin-1-yl)-propyl]-4-(4-o-tolyl-piperazin-1-yl)-benzamide 1g (250.0 mg, 0.53 mmol) in DMF (5.0 mL) and the reaction was stirred at 25° C. for 16 h. LCMS indicated the completion of reaction. Saturated solution of lithium chloride was added to this and the contents were extracted with ethyl acetate, organic layer was dried on anhydrous sodium sulfate, concentrated and the crude ii was purified on preparative HPLC using water/methanol (0.1% TFA) (42.0 mg, 13%).

Provenance & Evidence