Method for preparing 4-oxoisophorone from beta-isophorone

The invention discloses a method for continuously preparing 4-oxoisophorone. The method comprises the following steps: carrying out gas-liquid two-phase oxidation reaction on beta-isophorone and air in a solvent to generate reaction liquid containing the 4-oxoisophorone; wherein the water content a% in the reaction liquid and the content e% of the 3, 3, 5-trimethyl cyclohexanone b%, the 3, 3, 5, 5-tetramethyl cyclohexanone c%, the 3, 5, 5-trimethyl-2-cyclohexene-1-ketone d% and the 2, 6, 6-trimethyl-2-cyclohexene-1, 4-diketone in the reaction raw materials are controlled to meet # imgabs0. The method provided by the invention can effectively regulate and control the rate of the oxidation reaction, improve the selectivity of the oxidation reaction and reduce the production cost. And the production cost is greatly reduced. 本发明公开了一种连续制备4-氧代异佛尔酮的方法，β-异佛尔酮和空气在溶剂中发生气液两相氧化反应生成含有4-氧代异佛尔酮的反应液。其中，控制反应液中水含量a％、反应原料中3,3,5-三甲基环己酮b％、3,3,5,5-四甲基环己酮c％、3,5,5-三甲基-2-环已烯-1-酮d％、2,6,6-三甲基-2-环己烯-1,4-二酮的含量e％满足#imgabs0#本发明提供的方法可有效调控氧化