反应详情

A suspension of cyclohexylamine hydrochloride (310 mg, 2.28 mmol) and (2-methylphenyl)cyanamide (365 mg, 2.76 mmol) in dry chlorobenzene was heated at 125°-135° for 4 hrs. The solvent was evaporated in vacuo with heating, and the residue partitioned between CH2Cl2 and 20-8 ml 10% HCl. The aqueous extracts were made alkaline to pH 9-9.5, and the white precipitate collected after standing at 4° C. overnight. Two recrystallizations from EtOH/H2O gave 140 mg (22%) of white needles, mp 145°-146°, 1H (CD3OD) 1.149-2.054 (m, 10 H), 2.164 (s, 3 H), 3.50 (m, 1 H), 6.875 (d, 1H, J=7.5 Hz), 6.968 (t, 1H, J=7.5 Hz), 7.118 (t, 1H, J=7.5 Hz), 7.177 (d, 1H, J=7.5 Hz). Anal. Calcd for C14H21N3 : C, 72.69; H, 9.15; N, 18.16. Found: C, 72.72; H, 9.24; N, 18.18.

1. temperaturewas heated at 125°-135° for 4 hrs
2. customThe solvent was evaporated in vacuo
3. temperaturewith heating
4. customthe residue partitioned between CH2Cl2 and 20-8 ml 10% HCl
5. customthe white precipitate collected
6. customTwo recrystallizations from EtOH/H2O