反应详情

温度

0 °C

To a 250ml round-bottom flask containing chlorosulfonic acid (30ml) cooled to 0° C. was added ethyl (2-ethylphenoxy)acetate (7.2g, 34.6mmoles) dropwise. Once the addition was complete the ice-bath was removed and the reaction was allowed to warm to room temperature at which the reaction was stirred for 3hours. The reaction was then slowly added to ice and, once the excess chlorosulfonic acid was quenched, the mixture was diluted with CH2Cl2(200ml). The phases were separated and the aqueous fraction washed with CH2Cl2twice. The combined organic fractions were dried over Na2SO4and filtered and concentrated in vacuo to yield 7.2g (70%) of crude product. The crude product was used with no purification.

1. additionOnce the addition
2. customwas removed
3. temperatureto warm to room temperature at which the reaction
4. additionThe reaction was then slowly added to ice
5. customonce the excess chlorosulfonic acid was quenched
6. additionthe mixture was diluted with CH2Cl2(200ml)
7. customThe phases were separated
8. washthe aqueous fraction washed with CH2Cl2twice
9. customThe combined organic fractions were dried over Na2SO4and
10. filtrationfiltered
11. concentrationconcentrated in vacuo