HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1175788Generated: October 25, 2026
4-Nitroanthranilic acid → 4-Nitro-isatoic anhydride
https://huagongshe.com/reaction/1175788
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | 4-Nitroanthranilic acid | HCID 12076 | — |
| Reactant | Triphosgene | HCID 94429 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | 4-Nitro-isatoic anhydride | HCID 282089 | 20,285.801% |
Reaction Steps
A mixture of 4-nitroanthranilic acid (9.11 g), triphosgene (4.92 g) and tetrahydrofuran (240 ml) was stirred for 10 hours at 45° C. The precipitated solids were collected by filtration, washed with tetrahydrofuran, and then dried to obtain the target product (700 g).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US07842701B2 |
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| Source dataset | uspto-grants-2010_11 |
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| ORD ID | ord-02042def898647ecb57e7d9c13f875cd |
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| Source note | uspto-grants-2010_11 |
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