Preparation method of pseudo-iso-methyl ionone

• Main Authors: RUAN YONGZHE, WANG ZHONGHUA, GU XINCHENG, SUN YUANYUAN, JIA ZHENGRUI, WANG HUINA
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention provides a preparation method of pseudo-iso-methyl ionone, which is characterized in that citral and butanone are used as raw materials, methacrylic acid is used as a reaction aid in the presence of a solvent and concentrated hydrochloric acid, and the pseudo-iso-methyl ionone is prepared with high selectivity. The selectivity of the pseudo-iso-methyl ionone prepared by the method disclosed by the invention is about 90-93%, and the product yield is about 92-95%. 本发明提供了一种假性异甲基紫罗兰酮的制备方法，以柠檬醛和丁酮为原料，在溶剂和浓盐酸存在的条件下，使用甲基丙烯酸作为反应助剂，高选择性地制备得到假性异甲基紫罗兰酮。本发明方法制得的假性异甲基紫罗兰酮选择性在90～93％左右，产品收率在92～95％左右。