Ammonia → 1,4-Diamino-9,10-dihydro-9,10-dioxoanthracene-2-sulphonic acid

HRID 1247876

Reaction equation

HRID 1247876 reaction equation
[NH2:1][C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7](=[O:17])[C:6]=2[C:5](Br)=[CH:4][C:3]=1[S:19]([OH:22])(=[O:21])=[O:20].[NH3:23]>O>[NH2:1][C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7](=[O:17])[C:6]=2[C:5]([NH2:23])=[CH:4][C:3]=1[S:19]([OH:22])(=[O:21])=[O:20]

Participants

4

Reactant 2

HCID 222AmmoniaHCID 226281-Amino-4-bromo-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid

Product 1

HCID 777251,4-Diamino-9,10-dihydro-9,10-dioxoanthracene-2-sulphonic acid

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

It must be described as extremely suprising that the reaction of 1-amino-4-bromo-anthraquinone-2-sulphonic acid with ammonia in water under the reaction conditions employed, under pressure, should take place so uniformly and smoothly to give 1,4-diamino-anthraquinone-2-sulphonic acid, without the formation of significant amounts of 1-amino-4-hydroxy-anthraquinone-2-sulphonic acid, as reported in German Patent Specification No. 1,142,174.

Sources & evidence

ORD record
ord-a0d95a4f736b4ec4a1f6160dc37cbdc4
Source dataset
uspto-grants-1985_06
Patent number
US04521341

Linked notes

Loading…