反应详情

To a solution of 15.00 g (0.08 mole) of N-methyl-4-hydroxybenzenesulfonamide, 8.11 g (0.08 mole) of triethylamine and 200 ml of methylene chloride cooled to 0° C. was added a solution of 8.37 g (0.08 mole) of methacryloyl chloride in 100 ml of methylene chloride over a period of approximately 30 minutes. The solution was then stirred for another 3 hours with cooling; washed once with 100 ml of 2 percent HCl solution, and twice with water; dried over magnesium sulfate and concentrated in vacuo in a warm water bath. The resultant solid was recrystallized from 150 ml of ethyl alcohol:water (1:1) with filtering through diatomaceous earth. Collection of the white solid and drying at room temperature in vacuo gave 16.20 g (79.9 percent of theory) of N-methyl-4-methacryloyloxybenzenesulfonamide; m.p.=106° to 107° C.

1. temperaturewith cooling
2. washwashed once with 100 ml of 2 percent HCl solution
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated in vacuo in a warm water bath
5. customThe resultant solid was recrystallized from 150 ml of ethyl alcohol:water (1:1)
6. filtrationwith filtering through diatomaceous earth
7. customCollection of the white solid
8. customdrying at room temperature in vacuo