Hydrazine → HCID 12200544, compound

Participants

Reaction Steps

To a solution of 2-[1-hydroxy-meth-(Z)-ylidene]-cycloheptanone (1.35 g, 9.63 mmol) in MeOH (10 mL) at 0° C. was added hydrazine (0.30 mL, 9.63 mmol) dropwise. The yellow reaction mixture was stirred at room temperature for 30 min then concentrated. The residue was dissolved in CH2Cl2 and washed with water. The organic layer was dried over MgSO4 and concentrated to provide 1.24 g (95%) of 1,4,5,6,7,8-hexahydrocycloheptapyrazole as a pale yellow solid. 1H NMR (CDCl3, 400 MHz): δ (ppm) 7.28 (s, 1H), 2.75-2.82 (m, 2H), 2.54-2.62 (m, 2H), 1.80-1.91 (m, 2H), 1.60-1.75 (m, 4H).

Provenance & Evidence