反应详情

400 grams (4 moles) of methyl methacrylate, 4.74 (73 millimoles) grams of KCN and 0.118 gram (250 ppm) of N,N'-diphenylbenzidine in a 1 liter round bottom flask were heated to 90° to 100° C. with passage of air therethrough. Within one further hour there were charged 74 grams (1 mole) of glycidol and thereby the methyl methacrylate-methanol azeotrope withdrawn from the column head via a 1 meter Vigreux column at about 65° C. After 2.5 hours, the reaction was ended, which was shown by the increase of the head temperature. The sump was filtered free of potassium cyanide and washed with a little methyl methacrylate. After distilling off the methyl methacrylate there remained behind 132 grams of glycidyl methacrylate (93% yield). The product can be worked up by distillation for further purification (B.P.10, 71°-75° C.).

1. customthe methyl methacrylate-methanol azeotrope withdrawn from the column head via a 1 meter Vigreux column at about 65° C
2. temperatureincrease of the head temperature
3. filtrationThe sump was filtered free of potassium cyanide
4. washwashed with a little methyl methacrylate
5. distillationAfter distilling off the methyl methacrylate