Methacrylic Acid → 1-Ethoxyethyl Methacrylate (stabilized with MEHQ)

Participants

Reaction Steps

0.5 parts of phenothiazine was added to 144.2 parts (2 molar equivalents) of ethyl vinyl ether, 86.1 parts (1 molar equivalent) of methacrylic acid was added dropwise to the reaction system while cooling to 10° C. or below, and stirring was then carried out at room temperature (25° C.) for 4 hours. 5.0 parts of pyridinium p-toluenesulfonate was added thereto, stirring was then carried out at room temperature for 2 hours, and the mixture was allowed to stand at room temperature overnight. 5 parts of sodium bicarbonate and 5 parts of sodium sulfate were added to the reaction mixture, stirring was carried out at room temperature for 1 hour, insoluble material was filtered, concentration under vacuum was then carried out at no greater than 40° C., and a yellow oily residue was distilled under vacuum, thus giving 134.0 parts of 1-ethoxyethyl methacrylate (MAEVE) as a colorless oily material, this being a fraction with a boiling point (bp.) of 43° C. to 45° C./7 mmHg.

Provenance & Evidence