| abstract |
(57) [Summary] [Purpose] A methacrylic acid ester of a tertiary alcohol can be produced with a high selectivity and a high yield by a general transesterification method capable of producing a wide variety of methacrylates in the same production facility. Provide a way to do. [Structure] Methyl methacrylate is reacted with a tertiary alcohol such as t-butanol in the presence of a catalyst, and the produced methanol is removed from the reaction system to produce a methacrylic acid ester of a tertiary alcohol. At this time, with an alkali metal such as potassium or an alkaline earth metal such as magnesium as a catalyst, A catalyst in combination with a highly soluble lithium salt such as lithium chloride is used. Further, the reaction rate can be increased by using a specific polar solvent as the solvent. Further, it is preferable to set the water content in the reaction system to 1000 ppm or less. |