反应详情

A mixture of 26.4 g. (0.122 m.) of the compound of Example I, C. 20 g. (0.122 m.) of N,N-diethyl-p-phenylenediamine and 200 ml. of ethanol was stirred and heated at reflux overnight. The solution was concentrated in vacuo to give 43 g. m.p. 293°-295°. The crude product was recrystallized from 500 ml. of MeOH and precipitated with the addition of 500 ml. of ether. The yield after oven-drying (100°) was 33 g. m.p. 297°-299°.

1. additionA mixture of 26.4 g
2. temperatureheated
3. temperatureat reflux overnight
4. concentrationThe solution was concentrated in vacuo
5. customto give 43 g
6. customThe crude product was recrystallized from 500 ml
7. customof MeOH and precipitated with the addition of 500 ml
8. customThe yield
9. customafter oven-drying (100°)