Terephthalic Acid → HCID 86583626, compound

HRID 1994176Notes

Reaction equation

HRID 1994176 reaction equation
Cl.Cl.[NH2:3][C:4]1[CH:9]=[C:8]([NH2:10])[C:7]([OH:11])=[CH:6][C:5]=1[OH:12].[C:13]([OH:24])(=[O:23])[C:14]1[CH:22]=[CH:21][C:17]([C:18]([OH:20])=[O:19])=[CH:16][CH:15]=1.C([O-])(=O)C1C=CC(C([O-])=O)=CC=1.[Na+].[Na+]>O.[OH-].[Na+]>[NH2:3][C:4]1[CH:9]=[C:8]([NH2:10])[C:7]([OH:11])=[CH:6][C:5]=1[OH:12].[C:13]([O-:24])(=[O:23])[C:14]1[CH:22]=[CH:21][C:17]([C:18]([O-:20])=[O:19])=[CH:16][CH:15]=1

Participants

6

Reactant 3

HCID 7489Terephthalic AcidHCID 82305Disodium terephthalateHCID 27336484,6-Diaminoresorcinol Dihydrochloride2×

Product 1

HCID 86583626HCID 86583626, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 14798Sodium HydroxideSolvent

Procedure

7 parts by weight of 4,6-diamino-1,3-benzenediol dihydrochloride was dissolved in 33 parts by weight of water deaerated with nitrogen. 5.3 parts by weight of terephthalic acid was dissolved in 64 parts by weight of 1M sodium hydroxide solution and deaerated with nitrogen. The 4,6-diamino-1,3-benzenediol dihydrochloride solution was added dropwise to the disodium terephthalate solution over 10 minutes to form a white precipitate of 4,6-diamino-1,3-benzenediol/terephthalate. In this case, the reaction temperature was kept at 90° C. The obtained salt was filtered, dispersed and mixed into 3,000 parts by weight of water deaerated with nitrogen, and then filtered again. This dispersion, mixing and filtration operation was repeated three times.

Sources & evidence

ORD record
ord-8e26e67fdaf54bfb8e626b405e93471e
Source dataset
uspto-grants-2010_01
Patent number
US07652124B2

Reaction notes

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