反应详情

A mixture of ethyl 2-methoxyimino-2-propionylacetate (14.7 g.), sulfuryl chloride (10.9 g.) and acetic acid (14.7 ml.) was stirred at room temperature for an hour and then at 40° C. for 2.5 hrs. Ice-water was added to the reaction mixture, adjusted to pH 6.5 and extracted with methylene chloride. The extract was washed with an aqueous solution of sodium chloride, dried over magnesium sulfate and then filtered. The filtrate was evaporated in vacuo to give ethyl 2-methoxyimino-2-(2-chloropropionyl)acetate (16.0 g.).

1. extractionextracted with methylene chloride
2. washThe extract was washed with an aqueous solution of sodium chloride
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. customThe filtrate was evaporated in vacuo