反应详情

A mixture of Ph3P (138.0 g, 526 mmol), Et3N (21.3 g, 211 mmol), CCl4 (170 mL) and TFA (20 g, 175 mmol) was stirred for 10 min in an ice-bath. Aniline (19.6 g, 211 mmol) was dissolved in CCl4 (20 mL) was added. The mixture was stirred at reflux for 3 h. The solvent was removed under vacuum and hexane was added. The precipitates (Ph3PO and Ph3P) were filtered off and washed with hexane. The filtrate was distilled under reduced pressure to yield 2,2,2-trifluoro-N-phenyl-acetimidoyl chloride (19 g), which was used in the next step without further purification.

1. additionwas added
2. stirringThe mixture was stirred
3. temperatureat reflux for 3 h
4. customThe solvent was removed under vacuum and hexane
5. additionwas added
6. customThe precipitates (Ph3PO and Ph3P)
7. filtrationwere filtered off
8. washwashed with hexane
9. distillationThe filtrate was distilled under reduced pressure