反应详情

Ethylene was passed for 30 minutes at 15-20° C. into a solution of 158.0 g (0.54 mol) of methyl 2-chloro-3-hydroxyiminomethyl-4-methylsulfonylbenzoate and 1 l of dichloromethane. After 1.6 g of sodium acetate had been added, 454 ml of sodium hypochlorite solution were added dropwise at 10° C. while simultaneously passing in ethylene. Ethylene was subsequently passed in at 10° C. for a further 15 minutes. After the mixture had been stirred for 12 hours, the phases were separated, and the organic phase was washed with water, dried and concentrated. This gave 156.5 g (90% of theory) of methyl 2-chloro-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonylbenzoate.

1. customthe phases were separated
2. washthe organic phase was washed with water
3. customdried
4. concentrationconcentrated