反应详情

To 20 ml of a suspension of 0.31 g of 5% palladium/carbon in ethyl acetate, in which hydrogen had been adsorbed in advance, was added 1.03 g of the 2'-hydroxy-4,4'-dimethoxy-3'-(3-methyl-2-butenyl)chalcone obtained in Specific Example 16, and the mixture was stirred at room temperature for 5 hours and hydrogen was absorbed. After the reaction, the suspension was filtered to remove the palladium/carbon, and the solvent was removed from the filtrate by distillation to obtain 1.03 g (yield 98.7%) of 1-(2-hydroxy-4-methoxy-3-isopentylphenyl)-3-(4-methoxyphenyl)-1-propanone in the form of a white solid.

1. customobtained in Specific Example 16
2. customhydrogen was absorbed
3. customAfter the reaction
4. filtrationthe suspension was filtered
5. customto remove the palladium/carbon
6. customthe solvent was removed from the filtrate by distillation