Hydrazine hydrate (1:1) → HCID 18933282, compound

Participants

Reaction Steps

To a solution of N-[7-(p-fluorophenyl)-3,6-di(tert-butoxycarbonyl)-3,6-diaza-1-heptyl]phthalimide (14.5 g, 26.7 mmol) in methanol (200 ml) was added hydrazine monohydrate (1.4 ml) and heated under reflux for 5 hours. After completion of the reaction, the solvent was distilled off under reduced pressure. To the residue was added chloroform (200 ml) and washed with aqueous ammonia (150 ml×2). The organic layer was dried over anhydrous potassium carbonate and the solvent was distilled off under reduced pressure. The resulting colorless oily substance was chromatographed using silica gel column to give 4.7 g of the title compound from the fraction from methylene chloride-methanol-aqueous ammonia (90/10/0.5) as a colorless oily substance. Yield=43%.

Provenance & Evidence