反应详情

A mixture of 102 g of allyl-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid anhydride, prepared according to Example 1 in U.S. Pat. No. 3,105,839, and 68.1 g of 25% aqueous ammonia solution is refluxed with cooling at 95°-102° C. for 70 minutes, while stirring. The water and excess ammonia are then distilled off under reduced pressure (6,133 Pa). When the internal temperature reaches 120° C., 54 ml of aqueous ammonia have been distilled off. An orange-coloured, viscous residue remains, and is distilled under a pressure of 13.3 Pa. 62.07 g of allyl-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid imide pass over between 132° and 135° C., corresponding to a yield of 60% of theory. The imide is a yellow oil of refractive index nD20 1.5421 and viscosity η25 345 Pa.s at 25° C.

1. customprepared
2. temperaturewith cooling at 95°-102° C. for 70 minutes
3. distillationThe water and excess ammonia are then distilled off under reduced pressure (6,133 Pa)
4. customreaches 120° C.
5. distillation54 ml of aqueous ammonia have been distilled off
6. distillationis distilled under a pressure of 13.3 Pa
7. customover between 132° and 135° C.
8. customat 25° C.