Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Urea | HCID 1176 | — |
| Reactant | Phenyl isocyanate | HCID 7672 | — |
| Reactant | Diphenylamine | HCID 11487 | — |
| Catalyst | Phosphate | HCID 1061 | — |
| Solvent | Toluene | HCID 1140 | — |
| Product | Triphenylurea | HCID 597994 | 82% |
Reaction Steps
0,5 mole of diphenylamine was taken together with 0.53 mole of phenyl isocyanate and 0.6 g of di-n-butl phosphate in 150 ml of toluene. The mixture was heated at 100° C. for 24 hours, with stirring, and then cooled to room temperature. At about 30° C., the urea started to crystallize out. After filtering off, washing with 150 ml of cold toluene and drying, 0.41 mole of N-phenyl-N',N'-diphenylurea was obtained. Melting point: 131° C./yield: 82% of theory.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US04820871 |
|---|
| Source dataset | uspto-grants-1989_04 |
|---|
| ORD ID | ord-05377efcb93f490a957ed4883c7527c7 |
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| Source note | uspto-grants-1989_04 |
|---|
