Hydrochloric Acid → HCID 21252623, compound

HRID 1859213Notes

Reaction equation

HRID 1859213 reaction equation
[N+:1]([C:4]1[C:5]2[C:10]([CH:11]=[C:12]3[C:17]=1[CH:16]=[CH:15][CH:14]=[CH:13]3)=[CH:9][CH:8]=[CH:7][CH:6]=2)([O-])=O.[ClH:18]>C(O)(=O)C>[ClH:18].[NH2:1][C:4]1[C:5]2[C:10]([CH:11]=[C:12]3[C:17]=1[CH:16]=[CH:15][CH:14]=[CH:13]3)=[CH:9][CH:8]=[CH:7][CH:6]=2

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 117679-Nitroanthracene

Product 1

HCID 21252623HCID 21252623, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

A method as claimed in claim 7, in which 9-nitroanthracene is reacted with hydrated tin chloride and acetic acid in the presence of concentrated HCl to produce an aqueous solution of 9-aminoanthracene hydrochloride salt, and the solution is stirred in air at room temperature while 5% aqueous ammonia solution is added slowly until the pH rises to 1.5 to 2.0, the solution is stirred at this pH for at least 5 minutes and then further 5 aqueous ammonia is added slowly to bring the pH up to the range 5.8 to 6.0 and the stirring is continued at that pH for 3 to 6 hours and then further 5% aqueous ammonia is added to bring the pH into the range 8.5 to 9.0 with continued stirring, and the yellow solid which precipitates out is recovered.

Sources & evidence

ORD record
ord-48684565797548bfa1de53abd93270d3
Source dataset
uspto-grants-2000_11
Patent number
US06153726

Reaction notes

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