| 摘要 |
PURPOSE:To obtain a compound useful as a main component for acrylic resins under mild conditions in a short time and in high yield, by subjecting an beta- methoxyisobutyric acid ester to alcohol elimination reaction in the presence of a specific catalyst. CONSTITUTION:A beta-isomethoxybutyric acid ester shown by formula (R is 1-4C alkyl) is subjected to alcohol elimination molecular weight by using sodium methoxide or potassium methoxide as a catalyst and by adding the catalyst to the reaction system with time. The reaction is carried out under normal pressure or reduced pressure at 50-150 deg.C, preferably 60-110 deg.C for 0.5-5hr to give the aimed substance. Preferably the catalyst is dissolved in a solvent such as methanol and added and the amount of the catalyst is 0.1-10wt.%, preferably 0.2-5wt.% based on the compound shown by the formula. |
