Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | 2,3-Dihydroxybutanedioic Acid | HCID 875 | — |
| Reactant | Phosphoric Acid | HCID 1004 | — |
| Reactant | 3,4-Diaminotoluene | HCID 10332 | — |
| Solvent | Ethanol | HCID 702 | — |
| Solvent | Water | HCID 962 | — |
| Product | HCID 653921 | HCID 653921 | — |
Reaction Steps
A mixture of 15.0 g (0.10 mole) tartaric acid, 29.32 g (0.24 mole) 3,4-diaminotoluene, 25 ml water, 15 ml ethanol, 25 ml hydrochloric acid (conc.) and 10 ml 85% phosphoric acid was heated at 120° C. for 40 hours, poured into water and the mixture acidified with concentrated hydrochloric acid. After extraction with chloroform and making the aqueous phase alkaline with sodium hydroxide, a precipitate formed and was collected by filtration. The solid was washed with a small amount of acetone and held in vacuo for 18 hours. The residual moisture was removed by azeotropic distillation of its mixture with benzene.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04826833 |
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| Source dataset | uspto-grants-1989_05 |
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| ORD ID | ord-203455dae7854d07b05352cdd18adb48 |
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| Source note | uspto-grants-1989_05 |
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