Ammonia → Cleve's acid

HRID 372360

Reaction equation

HRID 372360 reaction equation
Cl[C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([S:12]([OH:15])(=[O:14])=[O:13])[CH:10]=2)[C:5]([S:16]([OH:19])(=[O:18])=[O:17])=[CH:4][CH:3]=1.[NH3:20]>O>[NH2:20][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([S:12]([OH:15])(=[O:14])=[O:13])[CH:10]=2)[C:5]([S:16]([OH:19])(=[O:18])=[O:17])=[CH:4][CH:3]=1.[NH2:20][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([S:12]([OH:15])(=[O:14])=[O:13])[CH:10]=2)[CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 2

HCID 222AmmoniaHCID 151919544-Chloronaphthalene-1,6-disulfonic acid

Product 2

HCID 8386Cleve's acidHCID 665671-Naphthylamine-4,7-disulfonic acid

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Process of claim 1 wherein 1-aminonaphthalene-4,7-disulphonic acid is prepared from 1-chloronaphthalene-4,7-disulphonic acid at temperatures below 220° C, and then the temperature of the reaction mixture is raised to 220° to 350° C in the presence of ammonia and water so as to obtain 1-aminonaphthalene-7-sulphonic acid.

Sources & evidence

ORD record
ord-1b0a964716db4c25ab1aa8cf432215f9
Source dataset
uspto-grants-1978_05
Patent number
US04091013

Linked notes

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