反应详情

温度

90 °C

20.6 g of the methyl α-(2-methylphenyl)-β-methoxyacrylate obtained as described in Method A, 17.65 g of N-bromosuccinimide, 0.2 g of azobisisobutyronitrile and 150 ml of CCl4 are slowly heated to 90° C. and kept at this temperature until all of the succinimide floats on the solvent. The mixture is filtered, the filtrate is evaporated down, the remaining oil is dissolved in about 5 ml of acetone and the solution is brought to crystallization with n-hexane. 27.5 g of colorless crystals of melting point 86°-87° C. are obtained.

1. filtrationThe mixture is filtered
2. customthe filtrate is evaporated down
3. dissolutionthe remaining oil is dissolved in about 5 ml of acetone
4. customthe solution is brought to crystallization with n-hexane