VICINAL GLYCOL ESTER PREPARATION PROCESS

摘要

When vicinal glycol esters are prepared by the liquid phase reaction of (a) ethylene or propylene, (b) molecular oxygen and (c) a carboxylic acid in the presence of a catalyst system which is tellurium cation plus bromide anion or selenium cation plus chloride anion or selenium cation plus bromide anion, significant improvements in selectivity and operability are obtained by employing, in conjunction with these catalyst systems, a basicity control cation of specified characteristics. This cation is employed in an amount at least sufficient to provide at least 0.05 equivalent of cation per gram-atom of halogen present.