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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1761409Generated: October 31, 2026

Hydrochloric Acid → HCID 653921, compound

https://huagongshe.com/reaction/1761409

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant2,3-Dihydroxybutanedioic AcidHCID 875—
ReactantPhosphoric AcidHCID 1004—
Reactant3,4-DiaminotolueneHCID 10332—
SolventEthanolHCID 702—
SolventWaterHCID 962—
ProductHCID 653921HCID 653921—

Reaction Conditions

Temperature120 °C

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

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04826833
Source datasetuspto-grants-1989_05
ORD IDord-203455dae7854d07b05352cdd18adb48
Source noteuspto-grants-1989_05