Hydrazine hydrate (1:1) → 3-(Pyridin-4-yl)propan-1-amine

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Reaction Steps

N-[3-(4-pyridyl)propyl]phthalimide (67.1 g, 252 mmol) was mixed with methanol (504 ml) and hydrazine monohydrate (18.3 ml, 378 mmol), and the mixture was refluxed for three hours. The reaction mixture was allowed to stand, then the resulting insoluble matter was filtered out, and the filtrate was concentrated under reduced pressure. Chloroform (1 L) and a 4 N aqueous sodium hydroxide solution (500 ml) were added to the resulting residue. After separation, the organic layer was dried over sodium sulfate and concentrated under reduced pressure. Then the obtained concentrate was distilled under reduced pressure to give the target compound (20.5 g, 60%) as a colorless oily matter.

Provenance & Evidence