Reacción #42673

Ecuación de reacción

water

Sodium hydride

tert-butyl [(3R,6S)-6-(2,3-difluorophenyl)-2-thioxoazepan-3-yl]carbamate

2,2,2-trifluoroethyl trifluoromethanesulfonate

→

title compound

Rendimiento 42.2%

tert-Butyl [(3R,6S)-6-(2,3-difluorophenyl)-2-thioxo-1-(2,2,2-trifluoroethyl)azepan-3-yl]carbamate

Rendimiento 42.2%

Disolventes

N,N-dimethylformamide

Condiciones de reacción

Tratamiento posterior

1. 1
   Extracciónthe mixture was extracted with ethyl acetate
2. 2
   LavadoThe organic layer was washed with water (2×), brine
3. 3
   Secadodried over sodium sulfate
4. 4
   Filtraciónfiltered
5. 5
   Concentraciónconcentrated
6. 6
   OtroPurification by silica gel chromatography (0% hexanes→30% ethyl acetate/hexanes)

Procedimiento

Sodium hydride (60% dispersion in mineral oil; 39 mg, 0.975 mmol) was added to a solution of tert-butyl [(3R,6S)-6-(2,3-difluorophenyl)-2-thioxoazepan-3-yl]carbamate (202 mg, 0.567 mmol) and 2,2,2-trifluoroethyl trifluoromethanesulfonate (141 μL, 1.131 mmol) in N,N-dimethylformamide at −25° C. After 15 min, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with water (2×), brine, dried over sodium sulfate, filtered and concentrated. Purification by silica gel chromatography (0% hexanes→30% ethyl acetate/hexanes) gave the title compound (105 mg). MS 439.1 (M+1).

Fuente