Epoxidation of 1,4-bis(allyloxy)butane by hydrogen peroxide using phase transfer catalysis

Epoxidation of 1,4-bis(allyloxy)butane by hydrogen peroxide under phase transfer catalysis and transition metal salts was investigated. The most advantageous conditions for the epoxidation were determined (temperature, reaction time, the type and amount of phase transfer catalyst, molar ratio of hydrogen peroxide to 1,4-bis(allyloxy)butane, the amount and molar ratio of H3PO4:Na2WO4·2H2O). The process was evaluated in terms of the conversion of 1,4-bis(allyloxy)butane, hydrogen peroxide and the yields of monoepoxide and diepoxide.

Graphical abstractEpoxidation of 1,4-bis(allyloxy)butane (DiAB) to 1-allyloxy-4-glycidyloxybuaten and 1,4-bis(glycidyloxy)butane by hydrogen peroxide under phase transfer catalysis and transition metal salts was investigated. The influence of temperature, reaction time, the type and amount of phase transfer catalyst, molar ratio of hydrogen peroxide to 1,4-bis(allyloxy)butane, the amount and molar ratio of H3PO4:Na2WO4·2H2O were studied. The reaction proceeding in the process can be described by the following equations:Figure optionsDownload full-size imageDownload as PowerPoint slide