反应详情

A solution of 3 g of ethyl 2-hydroxy-6-vinylbenzoate (see Example 1a), 150 ml of methanol and 45 ml of 10% by weight sodium hydroxide solution was boiled for 8 h. It was then poured into ice-water at pH 1 (hydrochloric acid) and extracted with ethyl acetate, and the solution was dried over sodium sulfate and evaporated under reduced pressure.

1. extractionextracted with ethyl acetate
2. dry with materialthe solution was dried over sodium sulfate
3. customevaporated under reduced pressure