反应详情

Thionyl chloride, 6.0 g (50 mmol) was added to a slurry of 4.0 g (16 mmol) 3-chloro-2-fluoro-5-(trifluoromethyl) benzamide and 15 mL dimethylformamide at 0° C. After stirring for one hour the reaction mixture was diluted with 25 mL pentane and neutralized by dropwise addition of a saturated potassium carbonate solution and filtered. The pentane solution was dried and distilled to yield 3-chloro-2-fluoro-5-(trifluoromethyl) benzonitrile in 71% yield, bp 75°-85° C./20 mm Hg.

1. filtrationfiltered
2. dry with materialThe pentane solution was dried
3. distillationdistilled