摘要 |
The process for preparing 1-functional allyl alcohol carboxylic esters comprises reacting a 3-functional allyl alcohol with the anhydride of the carboxylic acid at temperatures above 100 DEG C. in the presence of metal compounds of transition groups V to VII, namely at temperatures of 100-200 DEG C., preferably 130-150 DEG C. As metal compounds, it is possible to use oxidic metal compounds in the highest or at least second highest oxidation state of the transition metals, for example tungstic acid or its salts and/or tungsten(VI) oxide and/or molybdenum(V) oxide and/or molybdenum(VI) oxide and/or rhenium(VII) oxide. The 3-functional allyl alcohol and the carboxylic anhydride are advantageously used in equimolar amounts, if desired with a slight excess of anhydride, and an alkali metal salt of a weak acid, for example sodium carbonate or sodium acetate, can be added to the reaction mixture in an amount sufficient to trap free protons.
|