Hydrazine hydrate (1:1) → HCID 68311076, compound

Participants

Reaction Steps

Hydrazine monohydrate (0.23 ml, 3.86 mmol), 1-hydroxybenzotriazole (434 mg, 3.21 mmol), and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (740 mg, 3.86 mmol) were added to an N,N-dimethylformamide (16 ml) solution of the compound (898 mg, 3.21 mmol) obtained in Step 3 above at room temperature and the resulting mixture was stirred for 18 hours. The reaction mixture was subjected to extraction with chloroform:methanol [10:1 (v/v)] and the organic layer was washed with saturated sodium bicarbonate solution and then dried over anhydrous sodium sulfate. The solvent was concentrated under reduced pressure and the residue obtained was purified by silica gel column chromatography [dichloromethane:methanol=49:1→13:1 (v/v)] to give 811 mg (86%) of the title compound as a colorless solid.

Provenance & Evidence