SELECTIVE SYNTHESIS OF CYCLIC PHOSPHORIC ACID DIESTERS THROUGH OXORHENIUM(VII)-CATALYZED DEHYDRATIVE CONDENSATION OF PHOSPHORIC ACID WITH ALCOHOLS

摘要

The selective synthesis of phosphoric acid diesters has been achieved through the direct catalytic dehydrative condensation of phosphoric acid with two equivalents of alcohols. The present method works especially well for the synthesis of cyclic phosphoric acid diesters. The combination of perrhenic acid and N-methylbenzylamine efficiently catalyzes the dehydrative condensation of phosphoric acid with equimolar amounts of diols to give cyclic phosphoric acid diesters in excellent yields.