反应详情

A N,N-dimethylformamide solution (DMF, 100 ml) of 3,4-dichloroaniline (6.48 g, 40 mmol) and ethenesulfonyl fluoride (6.7 g, 57.9 mmol) was warmed to 110° C. for three hours. The cooled dark solution was diluted to 400 ml with water and the resulting dark oily precipate was decanted from the supernatant layer. This layer was extracted with ether (4×50 ml). The combined ether extracts were added to the oily precipitate and this dark solution was washed with brine and dried over MgSO4. The organic solution was evaporated to give the crude 2-[(3,4-dichlorophenyl)amino]ethanesulfonyl fluoride as a dark liquid in quantitative yield.

1. customthe resulting dark oily precipate was decanted from the supernatant layer
2. extractionThis layer was extracted with ether (4×50 ml)
3. additionThe combined ether extracts were added to the oily precipitate
4. washthis dark solution was washed with brine
5. dry with materialdried over MgSO4
6. customThe organic solution was evaporated