Product Name

  • Name

    2,4-Diamino-6-hydroxypyrimidine

  • EINECS 200-254-4
  • CAS No. 56-06-4
  • Article Data16
  • CAS DataBase
  • Density 1.84 g/cm3
  • Solubility
  • Melting Point 285-286 °C (dec.)(lit.)
  • Formula C4H6N4O
  • Boiling Point 288.5 °C at 760 mmHg
  • Molecular Weight 126.118
  • Flash Point 128.3 °C
  • Transport Information
  • Appearance white solid
  • Safety 22-24/25-36-26
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 56-06-4 (2,4-Diamino-6-hydroxypyrimidine)
  • Hazard Symbols IrritantXi
  • Synonyms 4(1H)-Pyrimidinone,2,6-diamino- (8CI,9CI);2,4-Diamino-6-hydroxypyrimidine;2,4-Diamino-6-pyrimidinone;2,6-Diamino-3,4-dihydropyrimidin-4-one;2,6-Diamino-4(1H)-pyrimidinone;2,6-Diamino-4(3H)-pyrimidinone;2,6-Diamino-4-hydroxypyrimidine;2,6-Diamino-4-pyrimidinol;2,6-Diaminopyrimidin-4-one;2,6-Diaminopyrimidine-4(3H)-one;6-Aminoisocytosine;6-Hydroxy-2,4-pyrimidinediamine;NSC 44914;NSC 680818;NSC9302;
  • PSA 98.05000
  • LogP 0.50900

Synthetic route

guanidine nitrate
506-93-4

guanidine nitrate

ethyl 2-cyanoacetate
105-56-6

ethyl 2-cyanoacetate

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Conditions
ConditionsYield
Stage #1: guanidine nitrate; ethyl 2-cyanoacetate With sodium methylate In methanol for 4h; Reflux;
Stage #2: With hydrogenchloride In water pH=9; pH-value;
95%
guanidine nitrate
113-00-8

guanidine nitrate

ethyl 2-cyanoacetate
105-56-6

ethyl 2-cyanoacetate

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Conditions
ConditionsYield
With triethylamine In ethanol for 4h; Reflux;66%
2,4-diamino-5-formyl-6-oxo(1H)-pyrimidine
88075-70-1

2,4-diamino-5-formyl-6-oxo(1H)-pyrimidine

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Conditions
ConditionsYield
With sulfuric acid In methanol for 72h; Ambient temperature;
thiophenol
108-98-5

thiophenol

NU6038
100061-59-4

NU6038

A

Benzyl phenyl sulfide
831-91-4

Benzyl phenyl sulfide

B

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Conditions
ConditionsYield
With triethylamine In methanol at 60℃; Rate constant;
2,4-diamino-6-fluoropyrimidine
696-83-3

2,4-diamino-6-fluoropyrimidine

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Conditions
ConditionsYield
With sodium hydroxide In methanol; water at 20℃; Rate constant;

A

pyrimidine-4(3H)-one
51953-18-5

pyrimidine-4(3H)-one

B

2,4-diaminopyrimidine
156-81-0

2,4-diaminopyrimidine

C

parabanic acid
120-89-8

parabanic acid

D

isocytosine
108-53-2

isocytosine

E

Cytosine
71-30-7

Cytosine

F

oxalic acid
144-62-7

oxalic acid

G

guanidine nitrate
113-00-8

guanidine nitrate

H

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

I

uracil
66-22-8

uracil

J

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

L

urea
57-13-6

urea

M

glycine
56-40-6

glycine

Conditions
ConditionsYield
With copper(II) choride dihydrate In water at 80℃; for 24h; pH=7.57;A 5.6 mg
B 0.3 mg
C 0.59 mg
D 5 mg
E 0.13 mg
F 0.1 mg
G 1.6 mg
H 0.0018 mg
I 3.8 mg
J 0.3 mg
K 0.01 mg
L 1.7 mg
M 0.76 mg

A

pyrimidine-4(3H)-one
51953-18-5

pyrimidine-4(3H)-one

B

2,4-diaminopyrimidine
156-81-0

2,4-diaminopyrimidine

C

guanidine nitrate
113-00-8

guanidine nitrate

D

uracil
66-22-8

uracil

E

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

F

urea
57-13-6

urea

Conditions
ConditionsYield
With manganese(II) chloride tetrahydrate In water at 80℃; for 24h; pH=7.57;A 0.3 mg
B 0.02 mg
C 0.1 mg
D 0.03 mg
E 0.06 mg
F 0.005 mg
guanidine nitrate
506-93-4

guanidine nitrate

methyl 2-cyanoacetate
105-34-0

methyl 2-cyanoacetate

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Conditions
ConditionsYield
With sodium methylate

A

pyrimidine-4(3H)-one
51953-18-5

pyrimidine-4(3H)-one

B

guanazole
1455-77-2

guanazole

C

parabanic acid
120-89-8

parabanic acid

D

LACTIC ACID
849585-22-4

LACTIC ACID

E

2-amino-1,9-dihydro-6H-purin-6-one
73-40-5

2-amino-1,9-dihydro-6H-purin-6-one

F

Oxalacetic acid
328-42-7

Oxalacetic acid

G

formylglycine
2491-15-8

formylglycine

H

succinic acid
110-15-6

succinic acid

I

Cytosine
71-30-7

Cytosine

J

purine
120-73-0

purine

K

oxalic acid
144-62-7

oxalic acid

L

guanidine nitrate
113-00-8

guanidine nitrate

M

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

N

uracil
66-22-8

uracil

O

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Q

urea
57-13-6

urea

R

glycine
56-40-6

glycine

S

rac-Ala-OH
302-72-7

rac-Ala-OH

T

2,4-diamino-pyrimidine-5-carboxylic acid
18588-61-9

2,4-diamino-pyrimidine-5-carboxylic acid

U

isocytosine

isocytosine

Conditions
ConditionsYield
With ferric sulfate nonahydrate; water at 80℃; for 24h;

B

guanazole
1455-77-2

guanazole

C

LACTIC ACID
849585-22-4

LACTIC ACID

D

Oxalacetic acid
328-42-7

Oxalacetic acid

E

succinic acid
110-15-6

succinic acid

F

purine
120-73-0

purine

G

oxalic acid
144-62-7

oxalic acid

H

uracil
66-22-8

uracil

I

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

J

urea
57-13-6

urea

Conditions
ConditionsYield
With copper(II) chloride tetrahydrate; water at 80℃; for 24h;

A

pyrimidine-4(3H)-one
51953-18-5

pyrimidine-4(3H)-one

B

parabanic acid
120-89-8

parabanic acid

C

2-amino-1,9-dihydro-6H-purin-6-one
73-40-5

2-amino-1,9-dihydro-6H-purin-6-one

D

Oxalacetic acid
328-42-7

Oxalacetic acid

E

succinic acid
110-15-6

succinic acid

F

oxalic acid
144-62-7

oxalic acid

G

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

H

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

I

urea
57-13-6

urea

J

2,4-diamino-pyrimidine-5-carboxylic acid
18588-61-9

2,4-diamino-pyrimidine-5-carboxylic acid

K

2,3-diaminomaleonitrile
18514-52-8

2,3-diaminomaleonitrile

Conditions
ConditionsYield
With water; manganese(ll) chloride at 80℃; for 24h;
malonic acid
141-82-2

malonic acid

guanidine nitrate
113-00-8

guanidine nitrate

urea
57-13-6

urea

A

2,4,6-triaminopyrimidine
1004-38-2

2,4,6-triaminopyrimidine

B

2-aminopyrimidine-4,6-diol
4425-67-6

2-aminopyrimidine-4,6-diol

C

BARBITURIC ACID
67-52-7

BARBITURIC ACID

D

2,4,6-triamino-s-triazine
108-78-1

2,4,6-triamino-s-triazine

E

pyrimidine-2,4,5-triamine
3546-50-7

pyrimidine-2,4,5-triamine

F

C4H4N2O3*C4H5N3O2

C4H4N2O3*C4H5N3O2

G

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

H

2-hydroxy-4,6-diaminopyrimidine
31458-45-4

2-hydroxy-4,6-diaminopyrimidine

I

Malonamic acid
2345-56-4

Malonamic acid

Conditions
ConditionsYield
at 65℃; for 120h;
guanidine hydrochloride
50-01-1

guanidine hydrochloride

ethyl 2-cyanoacetate
105-56-6

ethyl 2-cyanoacetate

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Conditions
ConditionsYield
With sodium ethanolate In ethanol at 50 - 70℃; under 1500.15 Torr; for 1.5h; Large scale;
4-Cyanophenacyl bromide
20099-89-2

4-Cyanophenacyl bromide

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

4-(2-amino-4-hydroxy-7H-pyrrolo[2,3-d]pyrimidin-6-yl)benzonitrile

4-(2-amino-4-hydroxy-7H-pyrrolo[2,3-d]pyrimidin-6-yl)benzonitrile

Conditions
ConditionsYield
Stage #1: 2,6-diaminopyrimidin-4-ol With sodium acetate In water at 100℃; for 0.333333h;
Stage #2: 4-Cyanophenacyl bromide In methanol at 100℃;
100%
Stage #1: 2,6-diaminopyrimidin-4-ol With sodium acetate In water at 100℃; for 0.333333h;
Stage #2: 4-Cyanophenacyl bromide In methanol; water at 100℃;
100%
potassium thioacyanate
333-20-0

potassium thioacyanate

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

2,4-diamino-6-hydroxy-5-thiocyanatopyrimidine
22288-75-1

2,4-diamino-6-hydroxy-5-thiocyanatopyrimidine

Conditions
ConditionsYield
Stage #1: potassium thioacyanate; 2,6-diaminopyrimidin-4-ol With acetic acid at 25 - 95℃; Inert atmosphere;
Stage #2: With bromine at 10 - 20℃; for 2h;
100%
o-chlorobenzylidene malononitrile
2698-41-1

o-chlorobenzylidene malononitrile

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

2,7-diamino-3,4-dihydro-4-oxo-5-(2-chlorophenyl)pyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-3,4-dihydro-4-oxo-5-(2-chlorophenyl)pyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With N-benzyl-N,N,N-triethylammonium chloride In water at 90℃; for 5h;99%
2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

5-bromo-2,4-diamino-6-hydroxypyrimidine
6312-72-7

5-bromo-2,4-diamino-6-hydroxypyrimidine

Conditions
ConditionsYield
With bromine; sodium hydrogencarbonate In methanol; water 2 h stirring, then standing overnight;97%
With N-Bromosuccinimide; montmorillonite K-10; tetrabutylammomium bromide for 0.0416667h; microwave irradiation;92%
2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

2,4-diamino-5-nitroso-6-hydroxypyrimidine
2387-48-6

2,4-diamino-5-nitroso-6-hydroxypyrimidine

Conditions
ConditionsYield
With acetic acid; sodium nitrite In water at 80℃;97%
With acetic acid; sodium nitrite In water97%
2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

2,4-diamino-5-nitro-6-hydroxypyrimidine
3346-23-4

2,4-diamino-5-nitro-6-hydroxypyrimidine

Conditions
ConditionsYield
With sulfuric acid; nitric acid at 30 - 35℃; for 2h;96.4%
With sodium nitrite In water at 0 - 5℃; under 750.075 Torr; for 0.5h; Large scale;
2-hydroxymethylene-1-tetralone sodium salt
138911-94-1

2-hydroxymethylene-1-tetralone sodium salt

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

10-amino-8-oxo-9H-5,6-dihydrobenzopyrimido<5,4-b>quinoline

10-amino-8-oxo-9H-5,6-dihydrobenzopyrimido<5,4-b>quinoline

Conditions
ConditionsYield
With phosphoric acid at 100℃; for 90h;95%
2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

3-methylbenzene-1,2-diol
488-17-5

3-methylbenzene-1,2-diol

2-amino-5-methyl-9H-pyrimido[4,5-b]indole-4,6,7-triol

2-amino-5-methyl-9H-pyrimido[4,5-b]indole-4,6,7-triol

Conditions
ConditionsYield
In aq. phosphate buffer at 20℃; pH=7; Electrolysis; Green chemistry;95%
3-[(2-methyl-4-oxo-4H-chromen-8-yl)methylene]pentane-2,4-dione
959934-74-8

3-[(2-methyl-4-oxo-4H-chromen-8-yl)methylene]pentane-2,4-dione

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

8-(6-acetyl-2-amino-4-hydroxy-7-methyl-5,8-dihydropyrido[2,3-d]-pyrimidin-5-yl)-2-methyl-4H-chromen-4-one
959934-79-3

8-(6-acetyl-2-amino-4-hydroxy-7-methyl-5,8-dihydropyrido[2,3-d]-pyrimidin-5-yl)-2-methyl-4H-chromen-4-one

Conditions
ConditionsYield
In isopropyl alcohol for 48h; Reflux; Inert atmosphere;94%
2,6-difluorobenzaldehyde
437-81-0

2,6-difluorobenzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(2,6-difluorophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(2,6-difluorophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.133333h;94%
benzene-1,2-diol
120-80-9

benzene-1,2-diol

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

2-amino-9H-pyrimido[4,5-b]indole-4,6,7-triol

2-amino-9H-pyrimido[4,5-b]indole-4,6,7-triol

Conditions
ConditionsYield
In aq. phosphate buffer at 20℃; pH=7; Electrolysis; Green chemistry;93%
3,4 difluorobenzaldehyde
34036-07-2

3,4 difluorobenzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(3,4-difluorophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(3,4-difluorophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.216667h;92%
4-bromo-benzaldehyde
1122-91-4

4-bromo-benzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(4-bromophenyl)-3,4,5,8-tetrahydro-4-oxopyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(4-bromophenyl)-3,4,5,8-tetrahydro-4-oxopyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.183333h;92%
europium(III) nitrate hydrate

europium(III) nitrate hydrate

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Eu((NH2)2C4N2H2O)2(H2O)3(NO3)2(1+)*NO3(1-)=Eu((NH2)2C4N2H2O)2(H2O)3(NO3)3
857036-63-6

Eu((NH2)2C4N2H2O)2(H2O)3(NO3)2(1+)*NO3(1-)=Eu((NH2)2C4N2H2O)2(H2O)3(NO3)3

Conditions
ConditionsYield
In methanol pyrimidine-compound was added to methanol, then hydrated Eu(NO3)3 was added, the soln. was stirred for 24 h; slow evapd.; elem. anal.;91%
3-methocycatechol
934-00-9

3-methocycatechol

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

2-amino-5-methoxy-9H-pyrimido[4,5-b]indole-4,6,7-triol

2-amino-5-methoxy-9H-pyrimido[4,5-b]indole-4,6,7-triol

Conditions
ConditionsYield
In aq. phosphate buffer at 20℃; pH=7; Electrolysis; Green chemistry;91%
4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(4-chlorophenyl)-3,4,5,8-tetrahydro-4-oxopyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(4-chlorophenyl)-3,4,5,8-tetrahydro-4-oxopyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.166667h;91%
4-cyanobenzaldehyde
105-07-7

4-cyanobenzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(4-cyanophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(4-cyanophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.216667h;91%
terbium(III) chloride hydrate

terbium(III) chloride hydrate

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

Tb((NH2)2C4N2H2O)2(H2O)6(3+)*3Cl(1-)=Tb((NH2)2C4N2H2O)2(H2O)6Cl3

Tb((NH2)2C4N2H2O)2(H2O)6(3+)*3Cl(1-)=Tb((NH2)2C4N2H2O)2(H2O)6Cl3

Conditions
ConditionsYield
In methanol pyrimidine-compound was added to methanol, then hydrated TbCl3 was added, the soln. was stirred for 24 h; slow evapd.; elem. anal.;90.4%
4-Nitrobenzylidenemalononitrile
2700-23-4

4-Nitrobenzylidenemalononitrile

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

2,7-diamino-3,4-dihydro-4-oxo-5-(4-nitrophenyl)pyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-3,4-dihydro-4-oxo-5-(4-nitrophenyl)pyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With N-benzyl-N,N,N-triethylammonium chloride In water at 90℃; for 6h;90%
benzaldehyde
100-52-7

benzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-4-oxo-5-phenyl-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-4-oxo-5-phenyl-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.3h;90%
m-bromobenzoic aldehyde
3132-99-8

m-bromobenzoic aldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(3-bromophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(3-bromophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.2h;90%
2,6-dichlorobenzaldehyde
83-38-5

2,6-dichlorobenzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(2,6-dichlorophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(2,6-dichlorophenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.2h;90%
C12H13NO4

C12H13NO4

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

C16H19N5O5

C16H19N5O5

Conditions
ConditionsYield
In water; ethyl acetate at 50℃; for 24h;90%
n-hexanoic anhydride
2051-49-2

n-hexanoic anhydride

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

N,N'-(6-hydroxypyrimidine-2,4-diyl)dihexanamide
1402591-91-6

N,N'-(6-hydroxypyrimidine-2,4-diyl)dihexanamide

Conditions
ConditionsYield
for 4h; Reflux;89%
2-chloro-benzaldehyde
89-98-5

2-chloro-benzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(2-chlorophenyl)-3,4,5,8-tetrahydro-4-oxopyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(2-chlorophenyl)-3,4,5,8-tetrahydro-4-oxopyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.233333h;89%
3-nitro-benzaldehyde
99-61-6

3-nitro-benzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(3-nitrophenyl)-4-oxo-3,4-dihydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(3-nitrophenyl)-4-oxo-3,4-dihydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.266667h;89%
4-hydroxy-3-ethoxybenzaldehyde
121-32-4

4-hydroxy-3-ethoxybenzaldehyde

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

malononitrile
109-77-3

malononitrile

2,7-diamino-5-(3-ethoxy-4-hydroxyphenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

2,7-diamino-5-(3-ethoxy-4-hydroxyphenyl)-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile

Conditions
ConditionsYield
With silica-coated iron oxide nanomagnetic particles-bonded S-sulfonic acid In neat (no solvent) at 100℃; for 0.333333h;89%
2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

(4RS)-4-ethyl-7,8-dihydro-4-hydroxy-7-dimethylaminomethylene-1H-pyrano<3,4-f>indolizine-3,6,10(4H)-trione
154597-38-3

(4RS)-4-ethyl-7,8-dihydro-4-hydroxy-7-dimethylaminomethylene-1H-pyrano<3,4-f>indolizine-3,6,10(4H)-trione

(4RS)-8-amino-4-ethyl-4-hydroxy-1H-pyrano<3'',4'':6',7'>indolizino<2',1':5,6>pyrido<2,3-d>pyrimidine-3,10,14(4H,9H,12H)-trione

(4RS)-8-amino-4-ethyl-4-hydroxy-1H-pyrano<3'',4'':6',7'>indolizino<2',1':5,6>pyrido<2,3-d>pyrimidine-3,10,14(4H,9H,12H)-trione

Conditions
ConditionsYield
In acetic acid for 20h; Heating;88%
3-(4-chlorophenyl)-1-phenylprop-2-en-1-one
956-04-7

3-(4-chlorophenyl)-1-phenylprop-2-en-1-one

2,6-diaminopyrimidin-4-ol
56-06-4

2,6-diaminopyrimidin-4-ol

5-(4-chlorophenyl)-7-phenyl-4-oxo-5,8-dihydropyrido<2,3-d>pyrimidine

5-(4-chlorophenyl)-7-phenyl-4-oxo-5,8-dihydropyrido<2,3-d>pyrimidine

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride In ethanol at 80℃; for 0.666667h;88%

2,4-Diamino-6-hydroxypyrimidine Specification

The IUPAC name of 2,4-Diamino-6-hydroxypyrimidine is 2,6-diamino-1H-pyrimidin-4-one. With the CAS registry number 56-06-4, it is also named as 4(1H)-Pyrimidinone, 2,6-diamino-. The product's categories are Pyrimidine; APIs & Intermediate; Pyridines, Pyrimidines, Purines and Pteredines; Chemical Amines; 13C & 2H Sugars; Amines; Bases & Related Reagents; Heterocycles; Nucleotides; Carbohydrates & Derivatives, and the other registry numbers are 40306-60-3; 41982-31-4; 863767-89-9. Besides, it is white solid, which should be stored in sealed, dark, cool, ventilated and dry place away from fire and heat source. In addition, it is light sensitive.

The other characteristics of this product can be summarized as: (1)EINECS: 200-254-4; (2)ACD/LogP: -1.66; (3)# of Rule of 5 Violations: 1; (4)ACD/LogD (pH 5.5): -1.66; (5)ACD/LogD (pH 7.4): -1.66; (6)ACD/BCF (pH 5.5): 1; (7)ACD/BCF (pH 7.4): 1; (8)ACD/KOC (pH 5.5): 2.95; (9)ACD/KOC (pH 7.4): 2.98; (10)H bond acceptors: 5; (11)H bond donors: 5; (12)Freely Rotating Bonds: 1; (13)Index of Refraction: 1.798; (14)Molar Refractivity: 29.21 cm3; (15)Molar Volume: 68.4 cm3; (16)Surface Tension: 94.7 dyne/cm; (17)Density: 1.84 g/cm3; (18)Flash Point: 128.3 °C; (19)Melting point: 285-286 °C; (20)Enthalpy of Vaporization: 52.78 kJ/mol; (21)Boiling Point: 288.5 °C at 760 mmHg; (22)Vapour Pressure: 0.00232 mmHg at 25 °C.

Preparation of 2,4-Diamino-6-hydroxypyrimidine: please put Guanidine nitrate in the solution of Sodium methoxide (or 50% NaOH) to heat and stir. After backflow half-hour, please drop Methyl cyanoacetate to reflow 2 hours. After the reaction complete, please heat the reclaimed Methanol. And then put the residues in the hot water to dissolve. When the temperature reach 80 °C, please add acetic acid to adjust pH=8. Then please separate crystallographic product out. After cooling below 20 °C, you would get this chemical by filtration, washing and drying.

Uses of 2,4-Diamino-6-hydroxypyrimidine: it is used for detection of nitrate and nitrite. It is also used in organic synthesis and pharmaceutical intermediates. And it is used for the production of AZM, minoxidilum and olic acid. Furthermore, it can react with 1,3-Dichloro-propan-2-one to get 5-Chloromethyl-furo[2,3-d]pyrimidine-2,4-diamine.



This reaction needs Dimethylformamide at temperature of 20 °C for 24 hours. The yield is 80 %.

When you are using this chemical, please be cautious about it as the following: it is irritating to eyes, respiratory system and skin. Please do not breathe dust. And please avoid contact with skin and eyes. You should wear suitable protective clothing. Moreover, in case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

People can use the following data to convert to the molecule structure.
(1)SMILES:O=C/1/N=C(/N)NC(\N)=C\1
(2)InChI:InChI=1/C4H6N4O/c5-2-1-3(9)8-4(6)7-2/h1H,(H5,5,6,7,8,9)
(3)InChIKey:SWELIMKTDYHAOY-UHFFFAOYAR
(4)Std. InChI:InChI=1S/C4H6N4O/c5-2-1-3(9)8-4(6)7-2/h1H,(H5,5,6,7,8,9)
(5)Std. InChIKey:SWELIMKTDYHAOY-UHFFFAOYSA-N

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