反应详情

A mixture of 3.3 g of (E)-4-(6-hydroxyhexyloxy)-4′-(tetrahydropyran-2-yloxy)stilbene (C), 0.6 g of palladium hydroxide, 34 ml of cyclohexene and 50 ml of ethanol was refluxed for 16 hours. The cooled mixture was filtered over celite and evaporated. 2.2 g of 4-{2-[4-(6-Hydroxy-hexyloxy)-phenyl]-ethyl}-phenol (L, 86%) was obtained after dissolution in 600 ml of dichloromethane, two extractions with 50 ml of water, drying over magnesium sulphate and evaporation. Apparently, deprotection of (K) had occurred under the reaction conditions.

1. temperaturewas refluxed for 16 hours
2. filtrationThe cooled mixture was filtered over celite
3. customevaporated