HuagongsheHuagongshe Chemistry Print Report · For research reference only
Nitric Acid → HCID 19034857, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Nitric Acid | HCID 944 | — |
| Reactant | Aniline | HCID 6115 | — |
| Reactant | 2-Aminopyridine | HCID 10439 | — |
| Reactant | Fuming sulfuric acid | HCID 24681 | — |
| Reactant | HCID 22226304 | HCID 22226304 | — |
| Reactant | HCID 86630726 | HCID 86630726 | — |
| Product | HCID 19034857 | HCID 19034857 | — |
| Product | 3-Amino-2-nitrobenzene-1-sulfonic acid | HCID 22146051 | — |
Reaction Steps
The present invention comprises a process for the preparation of 1) diaminodinitropyridine or 2) diaminodinitrobenzene by contacting 1) an aminopyridine or 2) an aminobenzene, respectively, with oleum and nitric acid, wherein the improvement comprises adding at least about 1% molar excess of nitric acid based upon the aminopyridine or aminobenzene respectively, with stirring for at least two hours to form first 1) aminonitropyridine sulfonic acid or 2) aminonitrobenzene sulfonic acid, respectively, and then 1) diaminodinitropyridine or 2) diaminodinitrobenzene respectively.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08115007B2 |
| Source dataset | uspto-grants-2012_02 |
| ORD ID | ord-fd392b602278403ab168bc483df5eb2c |
| Source note | uspto-grants-2012_02 |