反应详情

In 20 ml of benzene were dissolved 2.2 g of 4-heptyloxybenzyl alcohol and 1.7 g of ethyl 4-hydroxybenzoate, 1.8 g of diethyl azodicarboxylate and 2.6 g of triphenylphosphine were added to the solution, and a reaction was carried out with stirring. The reaction liquid was concentrated and the concentrate was separated and purified by the silica gel chromatography to obtain 3.1 g of ethyl 4-(4'-heptyloxybenzyloxy)benzoate. This ester was dissolved in 20 ml of ethanol and 4.2 ml of a 2N aqueous KOH solution was added to the solution to effect the hydrolysis. The reaction mixture was treated by customary procedures to obtain 2.7 g of 4-(4'heptyloxybenzyloxy)benzoic acid.

1. additionwere added to the solution
2. customThe reaction liquid
3. concentrationwas concentrated
4. customthe concentrate was separated
5. custompurified by the silica gel chromatography