| abstract |
The invention discloses a method for purifying 1,2-cyclohexanedione, which is simple to operate, cheap, easy to purify and enlarge for industrial production, and greatly reduces the boiling point of cyclohexanone through the azeotropic properties of water and cyclohexanone , without changing the boiling point of 1,2-cyclohexanedione, making cyclohexanone and 1,2-cyclohexanedione easy to separate, and reducing the temperature of separation, effectively preventing 1,2-cyclohexanedione Oxidative deterioration makes up for technical problems such as difficulty in synthesis and purification of 4-pyrazole boronate pinacol ester at present, and the purity can reach more than 98%. |