Ethyl chloroformate → HCID 67030874, compound

Participants

Reaction Steps

To a solution of 3-(4-Piperidin-1-ylmethyl-benzoylamino)-1H-thieno[2,3-c]pyrazole-5-carboxylic acid (1-methyl-1-phenyl-ethyl)-amide (500 mg, 1 mmol) in anhydrous THF (20 mL), diisopropylethylamine (1.027 ml, 6 mmol) was added dropwise at room temperature. The reaction was stirred for 5 minutes, and then ethyl chloroformate (130 mg, 0.115 mL, 1.2 mmol) wais also added dropwise. After stirring for 1 hour, the solvent was evaporated, the crude taken up with dichloromethane washed thoroughly with water, brine and dried with sodium sulfate. After filtration and evaporation the crude was triturated with ethyl ether to give the title compound as white solid.

Provenance & Evidence