反应详情

1.0 mL (1.8 g, 18 mmol) of concentrated sulfuric acid was added dropwise to a solution of 0.27 g (1.6 mmol) of 2-(2-hydroxy-6-methoxyphenyl)ethanol in 5.0 mL of acetic acid while being cooled on an ice-water bath. This mixture was stirred under room temperature for 5 minutes and 6.0 mL (4.7 g, 102 mmol) of ethanol was added dropwise thereto. 20 mL of toluene and 20 mL of water were added to this mixture and after stirred for 5 minutes, the mixture was transferred to a separatory funnel and settled. The aqueous layer was separated and discarded and after the organic layer was washed with 100 mL of water twice, the solvent was evaporated to obtain 0.16 g of the title compound.

1. temperaturewhile being cooled on an ice-water bath
2. stirringafter stirred for 5 minutes
3. customthe mixture was transferred to a separatory funnel
4. customThe aqueous layer was separated
5. washafter the organic layer was washed with 100 mL of water twice
6. customthe solvent was evaporated