HOAt → HCID 22346258, compound

Participants

Reaction Steps

To a mixture of the above N-sulfonylglycine TFA salt (0.32 g, 0.98 mmol), 1-hydroxy-7-azabenzotriazole (36 mg, 0.26 mmol), and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.22 g, 1.13 mmol) in DMF (50 mL), diisopropyl-ethylamine was added dropwise to adjust the pH to 5-6, and the resultant mixture was stirred at room temp overnight. The reaction mixture was concentrated under vacuum. The residue was subjected to column chromatography on silica gel eluted with chloroform. Collection and concentration of appropriate fractions provided 5-ethyl-1,2,5-thiadiazepan-4-one 1,1-dioxide as white solid.

Provenance & Evidence