反应详情

温度

0 °C

To a cooled (0° C.) solution of 3.00 g (9.74 mmoles) of the 1-(2,6-dichloro-4-trifluoromethylphenyl)-2,5-dimethylpyrrole prepared above in 60 mL of dichloromethane was added dropwise 1.03 mL (1.67 g, 9.86 mmoles) of dichlorofluoromethanesulfenyl chloride in 5 mL of dichloromethane solution. The mixture was maintained at 0° C. for 3 hours and then washed with a saturated aqueous solution of NaHCO3. Removal of solvent under reduced pressure afforded a black off which was chromatographed on silica gel with a 1% EtOAc in hexane eluent to give 3.85 g (90%) of 1-(2,6-dichloro-4-trifluoromethylphenyl)-2,5-dimethyl-3-(dichlorofluoromethylthio)pyrrole as a yellow off: 1H NMR (CDCl3): δ2.00 (s, 3H), 2.10 (s, 3H), 6.27 (s, 1H), 7.80 (s, 2H).

1. washwashed with a saturated aqueous solution of NaHCO3
2. customRemoval of solvent under reduced pressure
3. customafforded a black off which
4. customwas chromatographed on silica gel with a 1% EtOAc in hexane eluent