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

Participants

Reaction Steps

0.5 Grams of phenothiazin is added to 144.2 g (2 moles) of ethyl vinyl ether and 86.1 g (1 mole) of methacrylic acid is dropwise added thereto at 10° C. or lower, followed by stirring at room temperature for 4 hours. 5.0 Grams of pyridinium p-toluenesulfonate is added to the resultant, followed by conducting a reaction with stirring at room temperature for 2 hours and allowing to stand for overnight at room temperature. 5 Grams of sodium bicarbonate and 5 g of sodium sulfate are added to the reaction solution, followed by stirring at room temperature for 1 hour. Insolubles are removed by filtration and concentration under reduced pressure is conducted, and the yellow oily residue is distilled under reduced pressure to give 134.0 g of 1-ethoxyethyl methacrylate as colorless oily fraction having bp. 43 to 45° C./7mmHg.

Provenance & Evidence