4-(Trifluoromethyl)benzylamine → HCID 53476248, compound

Temperature

80 °C

Commercially available 4-trifluoromethylbenzylamine (1 ml, 7 mmol) was dissolved in 20 ml of AcOEt and at 0° C. triphosgene (2 g, 7 mmol) was added to the solution. The mixture was warmed at 80° C. for 4 hours then evaporated and the residue was dissolved in 5 ml of DMF. The solution of the isocyanate was added dropwise to a solution in DMF (10 ml) of compound 1c (700 mg, 4.66 mmol) and the mixture was warmed at 80° C. for 8 hours. (TLC AcOEt 4/petroleum ether 6). The solvent was evaporated and the crude was dissolved in AcOEt (30 ml) and washed with water (1×20 ml) and brine. The organic phase was dried over sodium sulfate and concentrated under vacuum. The purification of the crude residue by chromatographic column gave 320 mg of a white solid. Yield=19.5% 1HNMR (DMSO, 400 MHz) δ 4.41 (2H, d, J=6 Hz), 6.67 (1H, dd, J=7.6 Hz, J′=1.2 Hz), 7.00 (1H, t, J=8 Hz), 7.09 (1H, t), 7.51 (2H, d, J=8 Hz), 7.70 (3H, m), 8.73 (1H, s), 10.60 (1H, bs); [M+1] 352.1 (C16H12F3N3O3 requires 351.3).

1. additionwas added to the solution
2. customthen evaporated
3. dissolutionthe residue was dissolved in 5 ml of DMF
4. temperaturethe mixture was warmed at 80° C. for 8 hours
5. customThe solvent was evaporated
6. dissolutionthe crude was dissolved in AcOEt (30 ml)
7. washwashed with water (1×20 ml) and brine
8. dry with materialThe organic phase was dried over sodium sulfate
9. concentrationconcentrated under vacuum
10. customThe purification of the crude residue by chromatographic column

ORD record

ord-cb40a473ebff4cbea89b75d84b39d767

Source dataset

uspto-grants-2015_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09216975B2