Product Name

  • Name

    4-METHOXY-O-PHENYLENEDIAMINE

  • EINECS 600-319-0
  • CAS No. 102-51-2
  • Article Data71
  • CAS DataBase
  • Density 1.171 g/cm3
  • Solubility
  • Melting Point 46-48°C
  • Formula C7H10N2O
  • Boiling Point 302.379 °C at 760 mmHg
  • Molecular Weight 138.169
  • Flash Point 161.716 °C
  • Transport Information UN 2811
  • Appearance Dark brownish black solid
  • Safety 26-36/37/39-45
  • Risk Codes 23/24/25-36/37/38
  • Molecular Structure Molecular Structure of 102-51-2 (4-METHOXY-O-PHENYLENEDIAMINE)
  • Hazard Symbols IrritantXi
  • Synonyms o-Phenylenediamine,4-methoxy- (6CI,7CI,8CI);1,2-Diamino-4-methoxybenzene;3,4-Diaminoanisole;4-Methoxy-1,2-benzenediamine;4-Methoxy-1,2-diaminobenzene;4-Methoxy-1,2-phenylenediamine;4-Methoxy-2-aminoaniline;4-Methoxy-o-phenylenediamine;p-Methoxy-o-phenylenediamine;
  • PSA 61.27000
  • LogP 2.02200

Synthetic route

4-methoxy-2-nitroaniline
96-96-8

4-methoxy-2-nitroaniline

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen In ethanol at 20℃; under 2585.81 Torr; for 24h;99%
With hydrogen; palladium 10% on activated carbon In methanol at 20℃;97%
With sodium sulfide In water for 6h; Heating;96%
1-azido-4-methoxy-2-nitrobenzene
10336-13-7

1-azido-4-methoxy-2-nitrobenzene

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
With hydrogenchloride; indium In tetrahydrofuran at 20℃; for 6h;99%
3,4-dibromoanisole
62415-74-1

3,4-dibromoanisole

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
With C24H12Cu2F9N4O7; tetrabutylammomium bromide; ammonia; caesium carbonate In water at 110 - 140℃; for 16h;99%
3,4-dinitroanisole
4280-28-8

3,4-dinitroanisole

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
With palladium on activated charcoal; ethanol Hydrogenation;
5-methoxy-2-nitroaniline
16133-49-6

5-methoxy-2-nitroaniline

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In ethanol under 1551.4 Torr; for 2h;
With hydrogen In methanol at 20℃; under 1551.49 Torr; for 2h;
With palladium on activated charcoal; hydrogen In methanol
hydrogenchloride
7647-01-0

hydrogenchloride

acetic acid
64-19-7

acetic acid

4-methoxy-2-nitroaniline
96-96-8

4-methoxy-2-nitroaniline

zinc

zinc

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

ethanol
64-17-5

ethanol

furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

4-methoxy-2-nitroaniline
96-96-8

4-methoxy-2-nitroaniline

zinc

zinc

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

4-methoxy-2-nitroacetanilide
119-81-3

4-methoxy-2-nitroacetanilide

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
With sodium sulfide for 6h; Heating;
Multi-step reaction with 2 steps
1: 99 percent / NaOH; KOH / H2O / 0.5 h / Heating
2: 96 percent / Na2S*9H2O / H2O / 6 h / Heating
View Scheme
Multi-step reaction with 2 steps
1: sodium hydroxide / methanol
2: tin; hydrogenchloride
View Scheme
Multi-step reaction with 2 steps
1: hydrogenchloride / water / 18 h / Reflux
2: iron; ammonium chloride / water; ethanol / 24 h / Reflux
View Scheme
4-methoxyacetanilide
51-66-1

4-methoxyacetanilide

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 91 percent / nitric acid; sulfuric acid / 0 - 5 °C
2: Na2S*9H2O / 6 h / Heating
View Scheme
Multi-step reaction with 3 steps
1: 91 percent / nitric acid; sulfuric acid / 0 - 5 °C
2: 99 percent / NaOH; KOH / H2O / 0.5 h / Heating
3: 96 percent / Na2S*9H2O / H2O / 6 h / Heating
View Scheme
Multi-step reaction with 3 steps
1: nitric acid; sulfuric acid
2: sodium hydroxide / methanol
3: tin; hydrogenchloride
View Scheme
Multi-step reaction with 3 steps
1: nitric acid / dichloromethane / 2.33 h / 20 °C / Reflux
2: hydrogenchloride / water / 18 h / Reflux
3: iron; ammonium chloride / water; ethanol / 24 h / Reflux
View Scheme
4-methoxy-aniline
104-94-9

4-methoxy-aniline

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 85 percent / acetic acid / 2 h / 110 °C
2: 91 percent / nitric acid; sulfuric acid / 0 - 5 °C
3: Na2S*9H2O / 6 h / Heating
View Scheme
Multi-step reaction with 4 steps
1: 85 percent / acetic acid / 2 h / 110 °C
2: 91 percent / nitric acid; sulfuric acid / 0 - 5 °C
3: 99 percent / NaOH; KOH / H2O / 0.5 h / Heating
4: 96 percent / Na2S*9H2O / H2O / 6 h / Heating
View Scheme
Multi-step reaction with 4 steps
1: acetic acid
2: nitric acid; sulfuric acid
3: sodium hydroxide / methanol
4: tin; hydrogenchloride
View Scheme
Multi-step reaction with 4 steps
1.1: triethylamine / dichloromethane / 0.33 h / 0 °C / Inert atmosphere
1.2: 2.33 h / 0 - 20 °C
2.1: nitric acid / dichloromethane / 2.33 h / 20 °C / Reflux
3.1: hydrogenchloride / water / 18 h / Reflux
4.1: iron; ammonium chloride / water; ethanol / 24 h / Reflux
View Scheme
5-bromo-2-nitroaniline
5228-61-5

5-bromo-2-nitroaniline

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: tetrakis(triphenylphosphine) palladium(0); potassium carbonate
2: palladium on activated charcoal; ammonium formate / Reflux
View Scheme
2-methoxy-6-nitroaniline
16554-45-3

2-methoxy-6-nitroaniline

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

Conditions
ConditionsYield
With 5%-palladium/activated carbon; hydrogen In methanol at 20 - 30℃; under 1500.15 - 3750.38 Torr; for 0.5h; Autoclave;
glycolic Acid
79-14-1

glycolic Acid

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

(5-methoxy-1H-benzimidazole-2-yl)-methanol
20033-99-2

(5-methoxy-1H-benzimidazole-2-yl)-methanol

Conditions
ConditionsYield
With hydrogenchloride In water Reflux;100%
With hydrogenchloride In water for 6h; Reflux;51%
Stage #1: glycolic Acid; 4-methoxy-1,2-phenylenediamine With hydrogenchloride In water for 16h; Heating / reflux;
Stage #2: With sodium hydroxide In water
With hydrogenchloride In water for 6h; Reflux;
With hydrogenchloride In water at 100℃; for 6h;
C12H15IO2
1083427-54-6

C12H15IO2

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

C31H36I2N2O3

C31H36I2N2O3

Conditions
ConditionsYield
In ethanol at 80℃; for 8h; Inert atmosphere;100%
(3Z)-1-ethyl-3-[(ethylcarbamoylamino)-methylsulfanyl-methylene]urea
797047-27-9

(3Z)-1-ethyl-3-[(ethylcarbamoylamino)-methylsulfanyl-methylene]urea

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

C11H14N4O2

C11H14N4O2

Conditions
ConditionsYield
With sulfuric acid; sodium acetate In 1,4-dioxane for 1h; pH=3.5; Heating;99%
dimethyl 4-isothiocyanatoisophthalate
342803-20-7

dimethyl 4-isothiocyanatoisophthalate

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

methyl 8-methoxy-12(5H)-oxobenzimidazo[2,1-b]quinazoline-2-carboxylate

methyl 8-methoxy-12(5H)-oxobenzimidazo[2,1-b]quinazoline-2-carboxylate

Conditions
ConditionsYield
Stage #1: dimethyl 4-isothiocyanatoisophthalate; 4-methoxy-1,2-phenylenediamine In dichloromethane for 16h;
Stage #2: With dacarbazine In dichloromethane at 20℃;
Stage #3: With barium hydroxide octahydrate In 1,4-dioxane at 160℃; for 0.433333h; microwave irradiation; Further stages.;
98%
formic acid
64-18-6

formic acid

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

5-methoxy-1H-benzimidazole
4887-80-3

5-methoxy-1H-benzimidazole

Conditions
ConditionsYield
With zinc(II) oxide In water at 70℃; for 4h;98%
With hydrogenchloride In water for 1h; Reflux;85%
2-Picolinic acid
98-98-6

2-Picolinic acid

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

N,N'-(4-methoxy-1,2-phenylene)dipicolinamide

N,N'-(4-methoxy-1,2-phenylene)dipicolinamide

Conditions
ConditionsYield
With triphenyl phosphite In pyridine at 50℃; for 0.0833333h; Microwave irradiation;98%
With pyridine; triphenyl phosphite at 50℃; for 5h; Sonication;
acetic anhydride
108-24-7

acetic anhydride

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

N-(2-Formylamino-4-methoxy-phenyl)-formamide
120951-69-1

N-(2-Formylamino-4-methoxy-phenyl)-formamide

Conditions
ConditionsYield
With formic acid at 85 - 90℃; for 4h;97.5%
benzil
134-81-6

benzil

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

6-methoxy-2,3-diphenylquinoxaline
26832-42-8

6-methoxy-2,3-diphenylquinoxaline

Conditions
ConditionsYield
In methanol; acetic acid at 160℃; for 0.0833333h; Irradiation;97%
With titanium(IV) oxide In 1,2-dichloro-ethane at 25℃; for 0.25h;97%
With acetic acid In methanol at 160℃; for 0.0833333h; UV-irradiation;97%
phenyl benzyl ketone
451-40-1

phenyl benzyl ketone

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

6-methoxy-2,3-diphenylquinoxaline
26832-42-8

6-methoxy-2,3-diphenylquinoxaline

Conditions
ConditionsYield
With oxygen; triethylamine In toluene at 90℃; under 760.051 Torr; for 12h;97%
With [Cu(II)[5,11,17,23-tetrakis(trimethylammonium)-25,26,27,28-tetrahydroxycalix[4]arene](H2O)]I2; oxygen; potassium carbonate In water for 15h; Reflux; Green chemistry;88%
dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

dimethyl 6-methoxyquinoxaline-2,3-dicarboxylate
1458011-75-0

dimethyl 6-methoxyquinoxaline-2,3-dicarboxylate

Conditions
ConditionsYield
With [bis(acetoxy)iodo]benzene In N,N-dimethyl-formamide at -20℃; for 24h; Inert atmosphere; Darkness;97%
ethyl 3,3‐dibromo‐2‐formylacrylate

ethyl 3,3‐dibromo‐2‐formylacrylate

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

ethyl 2-(5-methoxy-1,3-dihydro-2H-benzo[d]imidazol-2-ylidene)-3-oxopropanoate

ethyl 2-(5-methoxy-1,3-dihydro-2H-benzo[d]imidazol-2-ylidene)-3-oxopropanoate

Conditions
ConditionsYield
With acetic acid In ethanol at 20℃; Inert atmosphere;97%
methyl 2-isothiocyanatobenzoate
16024-82-1

methyl 2-isothiocyanatobenzoate

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

8-methoxy-benzimidazo<2,1-b>quinazolin-12(5H)-one
115819-48-2

8-methoxy-benzimidazo<2,1-b>quinazolin-12(5H)-one

Conditions
ConditionsYield
Stage #1: methyl 2-isothiocyanatobenzoate; 4-methoxy-1,2-phenylenediamine In dichloromethane for 16h;
Stage #2: With dacarbazine In dichloromethane at 20℃;
Stage #3: With barium hydroxide octahydrate In 1,4-dioxane at 160℃; for 0.433333h; microwave irradiation; Further stages.;
96%
butanone
78-93-3

butanone

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

2-ethyl-5-methoxy-2-methyl-2H-benzo[d]imidazole

2-ethyl-5-methoxy-2-methyl-2H-benzo[d]imidazole

Conditions
ConditionsYield
With copper diacetate In ethanol at 25℃; for 5h; Green chemistry;96%
(4-isopropylbenzaldehyde)
122-03-2

(4-isopropylbenzaldehyde)

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

2-(4-isopropylphenyl)-5-methoxy-1H-benzo[d]imidazole

2-(4-isopropylphenyl)-5-methoxy-1H-benzo[d]imidazole

Conditions
ConditionsYield
In ethanol at 80℃; for 8h;96%
4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

C13H12N4O

C13H12N4O

Conditions
ConditionsYield
With CotA-laccase In aq. phosphate buffer at 20℃; for 2h; pH=6; Enzymatic reaction;96%
diphenyl acetylene
501-65-5

diphenyl acetylene

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

6-methoxy-2,3-diphenylquinoxaline
26832-42-8

6-methoxy-2,3-diphenylquinoxaline

Conditions
ConditionsYield
Stage #1: diphenyl acetylene With iodine In dimethyl sulfoxide at 130℃; for 24h;
Stage #2: 4-methoxy-1,2-phenylenediamine In dimethyl sulfoxide at 20℃; for 1h;
96%
selenium(IV) oxide
7446-08-4

selenium(IV) oxide

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

5-methoxy-2,1,3-benzoselenadiazole
1126-12-1

5-methoxy-2,1,3-benzoselenadiazole

Conditions
ConditionsYield
With hydrogenchloride In water at 0 - 80℃; for 1h;95.5%
potassium cyanide
151-50-8

potassium cyanide

o-phthalic dicarboxaldehyde
643-79-8

o-phthalic dicarboxaldehyde

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

1-cyano-2-(2'-amino-4'-methoxyphenyl)isoindole

1-cyano-2-(2'-amino-4'-methoxyphenyl)isoindole

Conditions
ConditionsYield
Stage #1: o-phthalic dicarboxaldehyde; 4-methoxy-1,2-phenylenediamine With sodium hydrogensulfite In water for 0.5h; Heating;
Stage #2: potassium cyanide In water for 1.5h; Heating; Further stages.;
95%
phenylglyoxal hydrate
1074-12-0

phenylglyoxal hydrate

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

7-methoxy-2-phenylquinoxaline
77093-88-0

7-methoxy-2-phenylquinoxaline

Conditions
ConditionsYield
With iodine In ethanol; water at 50℃; for 0.0125h; Microwave irradiation;95%
acetone
67-64-1

acetone

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

5-methoxy-2,2-dimethyl-2H-benzo[d]imidazole

5-methoxy-2,2-dimethyl-2H-benzo[d]imidazole

Conditions
ConditionsYield
With copper diacetate In ethanol at 25℃; for 3h; Green chemistry;95%
N,N-dimethyl-formamide
68-12-2, 33513-42-7

N,N-dimethyl-formamide

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

6-methoxy-1H-benzo[d]imidazole
4887-80-3

6-methoxy-1H-benzo[d]imidazole

Conditions
ConditionsYield
With zinc(II) acetate dihydrate In neat (no solvent) at 120℃; under 7600.51 Torr; for 18h; Autoclave; Inert atmosphere; Green chemistry;95%
With phenylsilane at 120℃; for 12h;41%
With Triethoxysilane; carbon dioxide; tris(pentafluorophenyl)borate at 120℃; for 24h;91 %Spectr.
butyraldehyde
123-72-8

butyraldehyde

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

5-methoxy-2-propyl-1H-benzo[d]imidazole
1104075-64-0

5-methoxy-2-propyl-1H-benzo[d]imidazole

Conditions
ConditionsYield
With zinc(II) chloride In aq. phosphate buffer at 20℃; for 0.5h; pH=7.4;94%
With copper(II) sulfate In aq. phosphate buffer at 20℃; for 0.833333h; pH=7.4; Kinetics;92%
phenylacetylene
536-74-3

phenylacetylene

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

7-methoxy-2-phenyl-3-(phenylethynyl)quinoxaline

7-methoxy-2-phenyl-3-(phenylethynyl)quinoxaline

Conditions
ConditionsYield
With dmap; caesium carbonate In toluene at 70℃; for 8h; Sealed tube;94%
2-(3,4,5-trimethoxyphenyl)-2-oxoacetaldehyde
150114-69-5

2-(3,4,5-trimethoxyphenyl)-2-oxoacetaldehyde

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

6-methoxy-2-(3,4,5-trimethoxyphenyl)benzopyrazine

6-methoxy-2-(3,4,5-trimethoxyphenyl)benzopyrazine

Conditions
ConditionsYield
With indium In water at 60℃; under 1241.19 - 2585.81 Torr; for 0.0166667h; Microwave irradiation; Green chemistry; chemoselective reaction;94%
2-nitro-benzaldehyde
552-89-6

2-nitro-benzaldehyde

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

2-(6-methoxy-1H-benzimidazol-2-yl)-phenylamine
29528-16-3

2-(6-methoxy-1H-benzimidazol-2-yl)-phenylamine

Conditions
ConditionsYield
Stage #1: 2-nitro-benzaldehyde; 4-methoxy-1,2-phenylenediamine With Oxone In N,N-dimethyl-formamide at 20℃; for 2h;
Stage #2: With hydrogen; palladium on activated charcoal In methanol at 20℃; under 1551.49 Torr; for 2h; Further stages.;
93%
tert-butylisonitrile
119072-55-8, 7188-38-7

tert-butylisonitrile

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

2-(tert-butylamino)-5-methoxybenzimidazole
1438395-78-8

2-(tert-butylamino)-5-methoxybenzimidazole

Conditions
ConditionsYield
With oxygen; palladium diacetate In 2-methyltetrahydrofuran at 75℃; for 20h; Molecular sieve;93%
N,N-dimethyl-formamide
68-12-2, 33513-42-7

N,N-dimethyl-formamide

4-methoxy-1,2-phenylenediamine
102-51-2

4-methoxy-1,2-phenylenediamine

5-methoxy-1H-benzimidazole
4887-80-3

5-methoxy-1H-benzimidazole

Conditions
ConditionsYield
With Imidazole hydrochloride at 120℃; for 6h;93%

4-Methoxy-o-phenylenediamine Chemical Properties

IUPAC Name: 4-Methoxybenzene-1,2-diamine
The molecular formula of 4-Methoxybenzene-1,2-diamine (CAS NO.102-51-2) is C7H10N2O.

                                     
The molecular weight of 4-Methoxybenzene-1,2-diamine (CAS NO.102-51-2) is 138.17.
Synonyms of 4-Methoxybenzene-1,2-diamine (CAS NO.102-51-2): 1,2-Benzenediamine, 4-methoxy- ; 4-Methoxy-1,2-diaminobenzene ; 3,4-Diaminoanisole
Product Categories: Intermediates of Dyes and Pigments
Index of Refraction: 1.619 
Density: 1.17 g/ml 
Flash Point: 161.7 °C
Boiling Point: 302.4 °C
Melting Point: 46-48 °C
Sensitive  Air Sensitive

4-Methoxy-o-phenylenediamine Uses

 4-Methoxybenzene-1,2-diamine (CAS NO.102-51-2) is used as chemical reagent, organic intermediates, fine chemicals, pharmaceutical research and development.

4-Methoxy-o-phenylenediamine Toxicity Data With Reference

1.    

dnd-hmn:fbr 50 µmol/L

    MUREAV    Mutation Research. 127 (1984),107.

4-Methoxy-o-phenylenediamine Consensus Reports

Reported in EPA TSCA Inventory. Community Right-To-Know List.

4-Methoxy-o-phenylenediamine Safety Profile

Human mutation data reported. When heated to decomposition it emits toxic fumes of NOx.Safety information of 4-Methoxybenzene-1,2-diamine (CAS NO.102-51-2):
Hazard Codes  IrritantXi
Risk Statements  23/24/25-36/37/38
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements  26-36/37/39-45
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR  2811
Hazard Note  Irritant

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