| 摘要 |
PURPOSE:To obtain suberic acid which is a raw material for resins and an intermediate for agricultural chemicals in high purity and yield without forming reaction by-products, by reacting cyclooctene with ozone in propionic acid solvent, and oxidizing the reaction product withe hydrogen peroxide containing a specific oxyacid. CONSTITUTION:The ozonolysis of cyclooctene is carried out by reacting the cyclooctene with oxygen containing ozone or air in propionic acid solvent at +20--20 deg.C, preferably, -10--20 deg.C, and the ozonolysis products is reacted with hydrogen peroxide in presence of an oxyacid, having the maximal oxidation number, and obtained from a nonmetallic element of Group VB or VIB in the periodic table in a catalytic amount, e.g. sulfuric acid or p-toluenesulfonic acid, at 60-80 deg.C and oxidized at the refluxing temperature of the propionic acid solvent to give the aimed compound. The amount of the hydrogen peroxide is preferably equimolar with the raw material cyclooctene or a slight excess, and the amount of the acidic catalyst is 1-20mol% based on the raw material. |
