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25462-61-7

Basic Information
CAS No.: 25462-61-7
Name: 2,5-Dibromo-1,4-phenylenediamine
Article Data: 6
Molecular Structure:
Molecular Structure of 25462-61-7 (2,5-Dibromo-1,4-phenylenediamine)
Formula: C6H6Br2N2
Molecular Weight: 265.935
Synonyms: 2,5-Dibrom-p-phenylendiamin;1,4-diamino-2,5-dibromobenzene;2.5-Dibrom-1.4-diamino-benzol;2,5-dibromo-4-aminoaniline;2.5-Dibrom-phenylendiamin-(1.4);WT1389;2,5-dibromo-p-phenylenediamine;1,4-Benzenediamine,2,5-dibromo;2,5-dibromo-1,4-phenylenediamine;
Density: 2.104
Melting Point: 187-188℃
Boiling Point: 332.9±37.0 °C(Predicted)
PSA: 52.04000
LogP: 3.53840
Synthetic route

2-acetamido-5-amino-p-dibromobenzene

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
With methanol; sodium hydroxide at 80℃; for 6h; Temperature;90.84%
25462-68-4

2,5-dibromo-4-nitroaniline

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
With hydrogenchloride; tin In ethanol; water at 0 - 20℃; for 16h; Inert atmosphere;88%
With hydrogenchloride; tin In ethanol; water at 20℃; for 12h; Inert atmosphere;66%
18908-08-2

1,4-dibromo-2,5-bisnitrobenzene

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
With hydrogenchloride; tin
25462-67-3

N-(2,5-dibromo-4-nitrophenyl)acetamide

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
With hydrogenchloride; tin(ll) chloride In ethanol Heating; Yield given;
Multi-step reaction with 2 steps
1: hydrogenchloride; water / 32 h / Reflux
2: hydrogenchloride; tin / water; ethanol / 12 h / 20 °C / Inert atmosphere
View Scheme
Multi-step reaction with 2 steps
1: hydrogenchloride / water / 41 h / Reflux; Inert atmosphere
2: hydrogenchloride; tin / water; ethanol / 16 h / 0 - 20 °C / Inert atmosphere
View Scheme
7647-01-0

hydrogenchloride

18908-08-2

1,4-dibromo-2,5-bisnitrobenzene

tin

tin

25462-61-7

2,5-dibromo-1,4-phenylenediamine

2,5-dibromo-p-phenylenediamine; dihydrochloride

A

7647-01-0

hydrogenchloride

B

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
beim Erhitzen;
106-37-6

1.4-dibromobenzene

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: HNO3+H2SO4
2: tin; hydrochloric acid
View Scheme
Multi-step reaction with 6 steps
1: nitric acid; sulfuric acid / dichloromethane / 40 °C / Cooling with ice
2: tin(II) chloride dihdyrate / ethanol / 4 h / 80 °C
3: triethylamine / ethyl acetate / 2 h / 70 °C
4: nitric acid; sulfuric acid / 0.67 h / 30 °C
5: acetic acid; iron / 2 h / 100 °C
6: sodium hydroxide; methanol / 6 h / 80 °C
View Scheme
25462-66-2

N-(2,5-dibromophenyl)acetamide

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sulfuric acid; nitric acid / water / 2 h / 10 °C / Cooling with ice
2: hydrogenchloride; water / 32 h / Reflux
3: hydrogenchloride; tin / water; ethanol / 12 h / 20 °C / Inert atmosphere
View Scheme
Multi-step reaction with 3 steps
1: sulfuric acid; nitric acid / water / 2 h / 6 °C / Inert atmosphere
2: hydrogenchloride / water / 41 h / Reflux; Inert atmosphere
3: hydrogenchloride; tin / water; ethanol / 16 h / 0 - 20 °C / Inert atmosphere
View Scheme
Multi-step reaction with 3 steps
1: nitric acid; sulfuric acid / 0.67 h / 30 °C
2: acetic acid; iron / 2 h / 100 °C
3: sodium hydroxide; methanol / 6 h / 80 °C
View Scheme
3638-73-1

2,5-dibromoaniline

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: water / 12 h / Reflux; Inert atmosphere
2: sulfuric acid; nitric acid / water / 2 h / 6 °C / Inert atmosphere
3: hydrogenchloride / water / 41 h / Reflux; Inert atmosphere
4: hydrogenchloride; tin / water; ethanol / 16 h / 0 - 20 °C / Inert atmosphere
View Scheme
Multi-step reaction with 4 steps
1: triethylamine / ethyl acetate / 2 h / 70 °C
2: nitric acid; sulfuric acid / 0.67 h / 30 °C
3: acetic acid; iron / 2 h / 100 °C
4: sodium hydroxide; methanol / 6 h / 80 °C
View Scheme
3460-18-2

1,4-dibromo-2-nitrobenzene

25462-61-7

2,5-dibromo-1,4-phenylenediamine

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: tin(II) chloride dihdyrate / ethanol / 4 h / 80 °C
2: triethylamine / ethyl acetate / 2 h / 70 °C
3: nitric acid; sulfuric acid / 0.67 h / 30 °C
4: acetic acid; iron / 2 h / 100 °C
5: sodium hydroxide; methanol / 6 h / 80 °C
View Scheme
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  • 2,5-Dibromo-1,4-phenylenediamine CAS No.25462-61-7

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