反应详情

48.9 g of phenol are dissolved in 500 ml of xylene, and to this solution are added 30.2 g of pulverised potassium hydroxide in an atmosphere of nitrogen. The reaction mixture is stirred and heated to boiling point, while continuously distilling off the water that is formed. After addition of 0.6 g of copper chloride and 100 g of 2,6-diisopropyl-4-bromoaniline, the mixture is stirred for 8 hours at 150°-155° C., then cooled, and filtered with suction. The filtrate is washed with 15% sodium hydroxide solution (150 ml) and with two 150 ml portions of water. The organic phase is separated and dried over sodium sulfate. The solvent is removed by distillation and the product is distilled, affording the compound of the formula ##STR5## with a boiling point of 103°-104° C./0.01 torr and a melting point of 71°-72° C. (after recrystallisation from hexane).

1. temperatureheated
2. distillationwhile continuously distilling off the water that
3. customis formed
4. stirringthe mixture is stirred for 8 hours at 150°-155° C.
5. temperaturecooled
6. filtrationfiltered with suction
7. washThe filtrate is washed with 15% sodium hydroxide solution (150 ml) and with two 150 ml portions of water
8. customThe organic phase is separated
9. dry with materialdried over sodium sulfate
10. customThe solvent is removed by distillation
11. distillationthe product is distilled
12. customaffording the compound of the formula ##STR5## with a boiling point of 103°-104° C./0.01 torr
13. customa melting point of 71°-72° C. (after recrystallisation from hexane)