| 摘要 |
PURPOSE:To improve the yield of the titled compound which is a main component of an acrylic resin article having excellent electrical insulation and chemical resistance, etc., and useful as a building material, etc., with simple procedure under mild condition, by using a specific catalyst in the dehydration of an alpha-hydroxyisobutyric acid ester. CONSTITUTION:The objective compound can be produced by dehydrating an alpha-hydroxyisobutyric acid ester of formula (R is 1-4C alkyl) (e.g. methyl alpha- hydroxyisobutyrate, t-butyl alpha-hydroxyisobutyrate, etc.) under normal or reduced pressure at 50-150 deg.C, preferably 60-110 deg.C using 0.5-10wt.%, especially 1-7wt.% catalyst (based on the raw material compound) consisting of sodium methoxide or potassium methoxide. |
