Phthalic Acid → 3-Butylphthalic acid

Participants

Reaction Conditions

Reaction Steps

148.2 g of anhydrous phthalic acid and 1.05 times the molar equivalent 77.8 g of n-butyl alcohol were added to a 500 ml glass round-bottomed flask equipped with stirring blades, thermometer and Dimroth condenser, heated while slowly stirring, and after the generated heat at about 90° C. wore off, raised to a temperature of 130° C., which was maintained for 2 hours. The mixture was subsequently cooled to 60° C. The acid value (number of mg of KOH necessary to neutralize 1 g of a sample) of the reaction solution was 253.8. Since the acid value for the case where the reaction is 100% complete is 248.4, the reaction rate was computed to be 98%.

Provenance & Evidence