Polystyrene-supported hydroquinone (PS-HQ) is presented as an in situ polymeric cocatalyst to replace polystyrene- supported benzoquinone (PS-BQ) in the PdCl_2-catalyzed acetalization of methyl acrylate with methanol in supercritical carbon dioxide (scCO_2) under oxygen atmosphere.Due to deletion of H_2O_2 oxidation step,PS-HQ is more convenient and relatively inexpensive.
Zhao Yang WangHuan Feng JiangChao Rong QiYan Xia ShenShao Rong Yang