反应详情

To a solution of anhydrous chloral (37.0 g) in dry ether (125 ml) was added meta-cresol (27.0 g) and the mixture was stirred at the ambient temperature for 20 minutes, after which it was cooled to 10° C and a solution of triethylamine (25.25 g) in dry ether (100 ml) was slowly added. Acetyl chloride (20.0 g) was then carefully added to the stirred mixture and stirring was continued for 1 hour. The insoluble material was removed by filtration and the filtrate dried over anhydrous magnesium sulphate. After removal of the ether by evaporation under reduced pressure the residual oil was distilled under high vacuum and the fraction boiling at 132°-135°/0.5 mm Hg collected. Infra-red and nuclear magnetic spectroscopic analysis indicated that this was 1(3-tolyloxy)-2,2,2-trichloroethyl acetate.

1. temperatureafter which it was cooled to 10° C
2. stirringstirring
3. waitwas continued for 1 hour
4. customThe insoluble material was removed by filtration
5. dry with materialthe filtrate dried over anhydrous magnesium sulphate
6. customAfter removal of the ether
7. customby evaporation under reduced pressure the residual oil
8. distillationwas distilled under high vacuum
9. customthe fraction boiling at 132°-135°/0.5 mm Hg collected