HCID 19744865, compound → Benzaldehyde, 4-(phenylmethoxy)-

Participants

Reaction Steps

In 65 ml of dimethylsulfoxide were dissolved 20.01 g of the 4'-benzyloxy-2'-hydroxy-3'-(3-methyl-2-butenyl)acetophenone obtained in Production Example 15 and 15.00 g of the 4-benzyloxybenzaldehyde obtained in Production Example 27, and 130 ml of a saturated ethanol solution of potassium hydroxide was added to the solution and the mixture was stirred at room temperature in a nitrogen current for 2.5 hours. After the reaction, the reaction liquid was diluted with water and was gradually made acidic by addition of 3N hydrochloric acid under cooling. The formed precipitate was recovered by filtration and recrystallized from a mixed solvent of benzene and ethanol to obtain 23.64 g (yield =72.7%) of 4,4'-dibenzyloxy-2'-hydroxy-3'-(3-methyl-2-butenyl)chalcone in the form of a yellow needle.

Provenance & Evidence