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温度

0 °C

A mixture of tert-butyl [(5,5-dimethyl-5,6,7,8-tetrahydronaphthalen-2-yl)oxy]acetate (2.8 g, 9.6 mmol), trifluoroacetic acid (10.0 ml) and methylene dichloride (20 ml) was stirred for 2 hours at 0° C. After being concentrated under reduced pressure, the crude residue was triturated using hexane and collected by filtration to give 1.45 g of the title compound as a white solid, which was used for further reaction without purification.

1. concentrationAfter being concentrated under reduced pressure
2. customthe crude residue was triturated
3. filtrationcollected by filtration