Synthesis of Bisphenol A

Abstract

Bisphenol A was obtained in about 80% yield by stirring a mixture of 1.2 mol of phenol, 0.3 mol of actone, 82.0 g of conc. hydrochloric acid and O.0 6 g of 3-mercaptopropionic acid at 70°C for 5 h. The yield of bisphienol A was investigated in various organic solvents with gaseous hydrogen chloride as an acidic condensing agent. Bisphenol A was obtained in 82.0and 88.0% yield at a low temperature in the presence of organic solvent such as hexane and o-dichlorobenzene, respectively, which did not dissolve bisphenol A. The solvent effect on the yield of bisphenol C was also investigated. The reacion mechanisms for the formaion of bisphenol A and C were proposed based on the analysis of the products by thin layer chromatography and gas chromatography.