Fries Rearrangement Reaction Of Phenyl Acetate

Fries rearrangement reaction is a reaction with high atom economy, which is beneficial to making full use of raw materials and eliminating pollution at the source, at the same time, it is an effective approach to realize the green chemistry and chemical process. Fries rearrangement of phenyl acetate is the most important synthetic pathway of o- and p-hydroxyacetophenone. Therefore, the design and application of Fries rearrangement reaction system of phenyl acetate are simultaneously achieving the dual goals of environmental protection and economic benefit.The research work is focused on the Fries rearrangement of phenyl acetate catalyzed by modified Y zeolites. We find that HY zeolites process good performance of catalysis for the Fries rearrangement of phenyl acetate, zeolizes have several merits,such as no causticity, reusability and easy separation from the reaction products. We remove the pollution of homogeneous catalysts and make it in liquid phase.The orther research work is the photochemical reaction of Fries rearrangement of phenyl acetate. The effect of factors on the yield was studied in detail, and the effect of viscosity and polarity on the selectivity was discussed in this reaction system. We find that the conversition of phenyl acetate is 98.6% and the selectivity of two products is 68.3% with high concentration in ethanol. Now people have come to utilize sun radiation and regenerative energy with the absence of energy.