反应详情

温度

60 °C

To a solution of 4-methyl-1-naphthalenecarboxylic acid (4.14 g, 22.2 mmol) in methanol (50 ml) was added thionyl chloride (3 ml), and the mixture was stirred at 60° C. overnight. The reaction solution was concentrated, water (100 ml) was added and the mixture was extracted with ethyl acetate (100 ml×2). The extract was washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine, dried over anhydrous magnesium sulfate and evaporated under reduced ressure to give methyl 4-methyl-1-naphthalenecarboxylate (4.32 g, 97%) as a colorless oil.

1. concentrationThe reaction solution was concentrated
2. additionwater (100 ml) was added
3. extractionthe mixture was extracted with ethyl acetate (100 ml×2)
4. washThe extract was washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine
5. dry with materialdried over anhydrous magnesium sulfate
6. customevaporated under reduced ressure