Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Carbon Dioxide | HCID 280 | — |
| Reactant | Benzoylhydrazine | HCID 11955 | — |
| Reactant | Phosphorus oxide (P4O10) | HCID 14812 | — |
| Reactant | HCID 54244768 | HCID 54244768 | — |
| Solvent | N-methyl-2-pyrrolidone | HCID 13387 | — |
| Product | HCID 23335081 | HCID 23335081 | — |
Reaction Steps
97 Parts of this isatoic anhydride are dissolved in 200 parts of N-methylpyrrolidone and 35 parts of benzhydrazide are added. The mixture is stirred at 120° C. until the evolution of CO2 is ceased, 35 parts of phosphorus pentoxide are then added and the batch is stirred for a further 4 hours at 120° C. After cooling, the product is precipitated with water, filtered off, rinsed with water and dried. This gives 107 parts of 4-[2,4-dichlorophenyl-sulfamoyl]-2 [5-phenyl-1,3,4-oxdiazolyl]-aniline of meltingpoint 215°-220° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US04229343 |
|---|
| Source dataset | uspto-grants-1980_10 |
|---|
| ORD ID | ord-c4eab1791cab4a7c955faf08cf19603f |
|---|
| Source note | uspto-grants-1980_10 |
|---|
