反应详情

A solution of 2-bromo-5-chlorobenzoic acid in ethanol (10 ml) and sulphuric acid (0.5 ml) was refluxed for 20 hours then cooled and evaporated. The residue was dissolved in diethyl ether/water and the organic layer dried (magnesium sulphate) and evaporated to give 516 mg of light brown oil.

1. temperaturethen cooled
2. customevaporated
3. dissolutionThe residue was dissolved in diethyl ether/water
4. dry with materialthe organic layer dried (magnesium sulphate)
5. customevaporated