Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Water | HCID 962 | — |
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 4-Nitro-1,2-phenylenediamine | HCID 5111791 | — |
| Reactant | Selenium | HCID 6326970 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | 5-amino-2H-1,3-benzodiazol-2-one | HCID 15250547 | 90% |
Reaction Steps
3,4-Diaminonitrobenzene 1.91 g (12.5 m moles), selenium powder 0.99 g (12.5 m moles), water 1.6 ml (89 m moles), triethylamine 5.0 g (50 m moles) and tetrahydrofuran 100 ml were placed in a 200-ml capacity autoclave, and stirred at a temperature of 80° C. for three hours under carbon monoxide of 20 Kg/cm2. The reaction mixture obtained was worked up in the same manner as in EXAMPLE 1, to provide 5-aminobenzimidazolone 1.80 g (90.0% yield).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US04393216 |
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| Source dataset | uspto-grants-1983_07 |
|---|
| ORD ID | ord-080c24b9fc444ba2bfeb783a5b6de35d |
|---|
| Source note | uspto-grants-1983_07 |
|---|
