Method for preparation of anhydrosugar ethers

摘要

A method for alkylation of an anhydrosugar compound in which a dialkyl carbonate is reacted with an anhydrosugar compound in the presence of a solid phase basic catalyst. A typical anhydrosugar compound is anhydrosugar alcohol, a dianhydromonoether and mixtures thereof. The reaction step uses zeolyte as the solid phase basic catalyst. The zeolite catalyst is typically a zeolite having ammonium groups. The reaction is carried out at a temperature below 240° C. and the reaction time is 2 hours or less.

主权项

1. A method for alkylation of isosorbide comprising the step of reacting a dialkyl carbonate with isosorbide in the presence of a solid phase basic zeolite catalyst to form at least one of a monoalkyl- or dialkyl isosorbide ether.