反应详情

In 250 ml of tetrahydrofuran were dissolved 8.6 g of 4-methylphenylhydrazine and 15.0 g of 1,3-diphenylcarbodiimide and after stirring the solution for 2 hours under ice-cooling, tetrahydrofuran was distilled off under reduced pressure. When 40 ml of benzene and 80 ml of n-hexane were added to the oily product thus formed, crystals deposited. By collecting the crystals thus deposited by filtration, 5.9 g of 1,2-diphenyl-3-(4-methylphenylamino)guanidine was obtained.

1. temperaturecooling
2. distillationtetrahydrofuran was distilled off under reduced pressure
3. additionWhen 40 ml of benzene and 80 ml of n-hexane were added to the oily product
4. customthus formed
5. customBy collecting the crystals
6. filtrationthus deposited by filtration