Methacrylic Acid → gamma-Butyrolactone methacrylate

関与物質

反応手順

After charging 100 parts of α-bromo-γ-butyrolactone and 104.4 parts of methacrylic acid (2.0 times in mole based on α-bromo-γ-butyrolactone), a three times amount of methyl isobutyl ketone based on α-bromo-γ-butyrolactone was added thereto to form a solution. To this solution was added dropwise 183.6 parts of triethylamine (3.0 times in mole based on α-bromo-γ-butyrolactone) Then, the solution was stirred at room temperature for about 10 hours. After filtration, the organic layer was washed with 5% aqueous sodium hydrogen carbonate solution and then washed twice with water. The organic layer was concentrated to give α-methacryloyloxy-γ-butyrolactone represented by the following formula in 85% yield:

情報源と証拠