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4418-61-5

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4418-61-5 Usage

Chemical Properties

White Crystalline powder

Uses

organic intermediate

Hazard

Moderately toxic. An unstable material; explodes with KOH.

Flammability and Explosibility

Notclassified

Check Digit Verification of cas no

The CAS Registry Mumber 4418-61-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,1 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4418-61:
(6*4)+(5*4)+(4*1)+(3*8)+(2*6)+(1*1)=85
85 % 10 = 5
So 4418-61-5 is a valid CAS Registry Number.
InChI:InChI=1/CH3N5/c2-1-3-5-6-4-1/h(H3,2,3,4,5,6)

4418-61-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name 5-Amino-1H-Tetrazole

1.2 Other means of identification

Product number -
Other names 5-Amino-1H-tetrazole

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:4418-61-5 SDS

4418-61-5Synthetic route

aminoguanidine bicarbonate
2582-30-1

aminoguanidine bicarbonate

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
Stage #1: aminoguanidine bicarbonate With hydrogenchloride; sodium nitrite In water at 10℃; for 0.5h;
Stage #2: With sodium carbonate In water at 85℃; for 3h;
97.6%
Stage #1: aminoguanidine bicarbonate With sulfuric acid; sodium nitrite at 4 - 10℃; for 0.5h; pH=2.5;
Stage #2: With ammonia at 88℃; for 3h; pH=8.7; Temperature; pH-value; Reagent/catalyst;
78.2%
CYANAMID
420-04-2

CYANAMID

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With sodium azide; triethylamine hydrochloride In toluene at 110℃;93%
With sodium azide; triethylamine hydrochloride In toluene at 110℃;93%
With sodium azide; triethylamine hydrochloride In toluene at 110℃;93%
Stage #1: CYANAMID With sodium azide; iodine In N,N-dimethyl-formamide for 6h; Reflux;
Stage #2: With hydrogenchloride In water; N,N-dimethyl-formamide at 20℃;
69.2%
With hydrogen azide; nitric acid at 20℃;
N,1-ditrityl-1H-tetrazol-5-amine

N,1-ditrityl-1H-tetrazol-5-amine

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
Stage #1: N,1-ditrityl-1H-tetrazol-5-amine With n-butyllithium In tetrahydrofuran; hexane at 0℃; for 0.166667h; Inert atmosphere;
Stage #2: With chloro-trimethyl-silane In tetrahydrofuran at 0℃; for 0.166667h; Inert atmosphere;
Stage #3: With naphthalene; lithium In tetrahydrofuran at -78℃; for 4h; Inert atmosphere;
93%
Stage #1: N,1-ditrityl-1H-tetrazol-5-amine With methanol; indium In tetrahydrofuran at 78℃; for 4h;
Stage #2: With hydrogenchloride In water at 20℃;
93%
With methanol; zinc In tetrahydrofuran for 11h; Reflux;87%
N-Cyanoguanidine
127099-85-8, 780722-26-1

N-Cyanoguanidine

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
Stage #1: N-Cyanoguanidine With hydrogenchloride; sodium azide; water; pyridine hydrochloride at 90℃; for 12h;
Stage #2: With sodium hydroxide In water at 20℃;
89%
With sodium azide; ammonium chloride In N,N-dimethyl-formamide at 130℃; for 8h; Reagent/catalyst; Autoclave;78%
Stage #1: N-Cyanoguanidine With sodium azide In water at 65℃; for 1h;
Stage #2: With hydrogenchloride In water at 65 - 70℃; for 6h;
73%
methanol
67-56-1

methanol

2-<((5-amino-1H-tetrazol-1-yl)carbonyl)amino>benzoic acid methyl ester
110919-50-1

2-<((5-amino-1H-tetrazol-1-yl)carbonyl)amino>benzoic acid methyl ester

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

methyl 2-((methoxycarbonyl)amino)benzoate
7143-42-2

methyl 2-((methoxycarbonyl)amino)benzoate

Conditions
ConditionsYield
for 2h; Heating;A n/a
B 88%
C7H6ClN7
93680-29-6

C7H6ClN7

benzene
71-43-2

benzene

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

4'-biphenyl chloride
2051-62-9

4'-biphenyl chloride

Conditions
ConditionsYield
With acetic acid at 65℃; for 3h;A n/a
B 74%
C8H8ClN7
93680-34-3

C8H8ClN7

benzene
71-43-2

benzene

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

4'-biphenyl chloride
2051-62-9

4'-biphenyl chloride

Conditions
ConditionsYield
With trifluoroacetic acid at 65℃; for 3h;A n/a
B 69%
C7H6N8O2
93680-31-0

C7H6N8O2

benzene
71-43-2

benzene

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

1-phenyl-4-nitrobenzene
92-93-3

1-phenyl-4-nitrobenzene

Conditions
ConditionsYield
With trifluoroacetic acid at 65℃; for 3h;A n/a
B 58%
C7H6BrN7
93680-30-9

C7H6BrN7

benzene
71-43-2

benzene

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

4-bromo-1,1'-biphenyl
92-66-0

4-bromo-1,1'-biphenyl

Conditions
ConditionsYield
With trifluoroacetic acid at 65℃; for 3h;A n/a
B 45%
C7H7N7
93680-28-5

C7H7N7

benzene
71-43-2

benzene

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

biphenyl
92-52-4

biphenyl

Conditions
ConditionsYield
With trifluoroacetic acid at 65℃; for 3h;A n/a
B 43%
C8H9N7
93680-33-2

C8H9N7

benzene
71-43-2

benzene

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

4-Methylbiphenyl
644-08-6

4-Methylbiphenyl

Conditions
ConditionsYield
With trifluoroacetic acid at 65℃; for 3h;A n/a
B 35%
5-azido-1H-tetrazole
35038-46-1

5-azido-1H-tetrazole

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With hydrogen sulfide Edukt 1: 5-Azido-1H-tetrazol oder dessen Kalium-Salz;
5-amino-1-benzyltetrazole
31694-90-3

5-amino-1-benzyltetrazole

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With palladium; acetic acid Hydrogenation;
azidocarboxamidine
6930-90-1

azidocarboxamidine

ethanol
64-17-5

ethanol

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
Rate constant; in Loesungen vom pH 8.8 bis pH 9.3 bei Temperaturen von -10grad bis +1grad.Cyclisierung.;
azidocarboxamidine
6930-90-1

azidocarboxamidine

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With ethanol
With water
diazoguanidinium nitrate

diazoguanidinium nitrate

benzoyl chloride
98-88-4

benzoyl chloride

5-aminotetrazole
4418-61-5

5-aminotetrazole

diazoguanidinium nitrate

diazoguanidinium nitrate

acetyl chloride
75-36-5

acetyl chloride

5-aminotetrazole
4418-61-5

5-aminotetrazole

1-guanyl-4--tetrazene

1-guanyl-4--tetrazene

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With sulfuric acid
With nitric acid
5.5'-diazoaminotetrazole

5.5'-diazoaminotetrazole

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With diluted acids
With hydrogenchloride; tin(ll) chloride
1,3-bis-(1H-tetrazol-5-yl)-triazene
56929-36-3

1,3-bis-(1H-tetrazol-5-yl)-triazene

acidified water

acidified water

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
unter Stickstoff-Entwicklung;Reaktion mit dem Natriumverbindung;
azidocarboxamidine nitrate

azidocarboxamidine nitrate

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With ethanol; thiosemicarbazide
With ethanol; several amines
With ethanol; hydrazine derivative
guanyl-diazoguanyl-tetrazene

guanyl-diazoguanyl-tetrazene

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With water
With sulfuric acid
With nitric acid
salt of carboxamide-imide azide

salt of carboxamide-imide azide

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
With water
With sodium acetate
With diluted acids
With ammonia
water
7732-18-5

water

3,5-Dimethylpyrazole-1-carboxamidine
22906-75-8

3,5-Dimethylpyrazole-1-carboxamidine

NaN3

NaN3

A

3,5-dimethyl-1H-pyrazole
67-51-6

3,5-dimethyl-1H-pyrazole

B

5-aminotetrazole
4418-61-5

5-aminotetrazole

Conditions
ConditionsYield
Erwaermen des Nitrats;
N-methyl-N'-(1H-tetrazol-5-yl)-urea
125708-96-5

N-methyl-N'-(1H-tetrazol-5-yl)-urea

water
7732-18-5

water

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

methyl isocyanate
624-83-9

methyl isocyanate

hydrogenchloride
7647-01-0

hydrogenchloride

1,3-bis-(1H-tetrazol-5-yl)-triazene
56929-36-3

1,3-bis-(1H-tetrazol-5-yl)-triazene

tin dichloride

tin dichloride

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

-hydrazine

-hydrazine

1,6-bis-(1H-tetrazol-5-yl)-hexaza-1,5-diene
68594-19-4

1,6-bis-(1H-tetrazol-5-yl)-hexaza-1,5-diene

concentrated NaOH-solution

concentrated NaOH-solution

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

5-azido-1H-tetrazole
35038-46-1

5-azido-1H-tetrazole

C

nitrogen

nitrogen

Conditions
ConditionsYield
Zufuegen von Wasser;
(1(2)H-tetrazol-5-yl)-guanidine
66591-60-4

(1(2)H-tetrazol-5-yl)-guanidine

water
7732-18-5

water

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

ammonia
7664-41-7

ammonia

C

methylammonium carbonate
15719-64-9, 15719-76-3, 97762-63-5

methylammonium carbonate

D

nitrogen

nitrogen

Conditions
ConditionsYield
at 200℃; Zersetzung;
4-(1(2)H-tetrazol-5-yl)-tetraz-3-ene-1-carboximidic acid amide
539-57-1

4-(1(2)H-tetrazol-5-yl)-tetraz-3-ene-1-carboximidic acid amide

sulfuric acid
7664-93-9

sulfuric acid

A

5-aminotetrazole
4418-61-5

5-aminotetrazole

B

ethanedinitrile
460-19-5

ethanedinitrile

C

aminoguanidine
79-17-4

aminoguanidine

D

nitrogen

nitrogen

5-aminotetrazole
4418-61-5

5-aminotetrazole

aminotetrazolium sulfate

aminotetrazolium sulfate

Conditions
ConditionsYield
Stage #1: 5-aminotetrazole In water at 40℃;
Stage #2: With sulfuric acid In water
100%
5-aminotetrazole
4418-61-5

5-aminotetrazole

potassium 1,1,3,3-tetranitropropane-1,3-diide
32617-21-3, 142656-37-9

potassium 1,1,3,3-tetranitropropane-1,3-diide

N-(1H-tetrazol-5-yl)-3,5-dinitropyrazole

N-(1H-tetrazol-5-yl)-3,5-dinitropyrazole

Conditions
ConditionsYield
With hydrogenchloride In water; acetonitrile at 20℃; for 1.5h;100%
5-aminotetrazole
4418-61-5

5-aminotetrazole

1,1,3,3-tetra(1H-tetrazol-5-yl)propane
1036283-88-1

1,1,3,3-tetra(1H-tetrazol-5-yl)propane

5-amino-1H-tetrazol-2-ium5,5’,5’’,5’’’-(propane-1,1,3,3-tetrayl)tetratetrazol-1-ide

5-amino-1H-tetrazol-2-ium5,5’,5’’,5’’’-(propane-1,1,3,3-tetrayl)tetratetrazol-1-ide

Conditions
ConditionsYield
In methanol at 25℃; for 4h;99%
5-aminotetrazole
4418-61-5

5-aminotetrazole

Diethyl 2-bromomalonate
685-87-0

Diethyl 2-bromomalonate

diethyl (tetrazol-5-ylamino)malonate
155199-06-7

diethyl (tetrazol-5-ylamino)malonate

Conditions
ConditionsYield
With triethylamine In tetrahydrofuran for 48h; Ambient temperature;98.5%
5-aminotetrazole
4418-61-5

5-aminotetrazole

acetylacetone
123-54-6

acetylacetone

2-azido-4,6-dimethylpyrimidine
3611-45-8

2-azido-4,6-dimethylpyrimidine

Conditions
ConditionsYield
With copper dichloride; ascorbic acid In ethanol at 20℃; for 3h;98%
5-aminotetrazole
4418-61-5

5-aminotetrazole

1,1,1-trifluoro-4-(4-fluorophenyl)-4-methoxybut-3-en-2-one

1,1,1-trifluoro-4-(4-fluorophenyl)-4-methoxybut-3-en-2-one

5-(4-fluorophenyl)-7-trifluoromethyltetrazolo[1,5-a]pyrimidine

5-(4-fluorophenyl)-7-trifluoromethyltetrazolo[1,5-a]pyrimidine

Conditions
ConditionsYield
With hydrogenchloride In water at 120℃; for 0.2h; Wavelength; Ionic liquid; Microwave irradiation; regioselective reaction;98%
5-aminotetrazole
4418-61-5

5-aminotetrazole

para-iodoanisole
696-62-8

para-iodoanisole

1-(4-methoxyphenyl)-5-amino-1H-tetrazole
39889-78-6

1-(4-methoxyphenyl)-5-amino-1H-tetrazole

Conditions
ConditionsYield
With 1,10-Phenanthroline; copper(II) acetate monohydrate; caesium carbonate In dimethyl sulfoxide at 85℃; for 18h; regioselective reaction;98%
With 1,10-Phenanthroline; cobalt(II) chloride hexahydrate; caesium carbonate In dimethyl sulfoxide at 85℃; regioselective reaction;
5-aminotetrazole
4418-61-5

5-aminotetrazole

N-phenylbenzohydrazonoyl chloride
15424-14-3

N-phenylbenzohydrazonoyl chloride

1-[Phenyl-(phenyl-hydrazono)-methyl]-1H-tetrazol-5-ylamine
114064-78-7

1-[Phenyl-(phenyl-hydrazono)-methyl]-1H-tetrazol-5-ylamine

Conditions
ConditionsYield
With triethylamine In ethanol for 1h; Ambient temperature;97%
5-aminotetrazole
4418-61-5

5-aminotetrazole

6-methoxy-1-(1-methylethoxy)-2-naphthalenecarboxylic acid
117666-75-8

6-methoxy-1-(1-methylethoxy)-2-naphthalenecarboxylic acid

1,1'-carbonyldiimidazole
530-62-1

1,1'-carbonyldiimidazole

6-methoxy-1-(1-methylethoxy)-N-1H-tetrazol-5-yl-2-naphthalenecarboxamide

6-methoxy-1-(1-methylethoxy)-N-1H-tetrazol-5-yl-2-naphthalenecarboxamide

Conditions
ConditionsYield
With triethylamine In acetonitrile97%
5-aminotetrazole
4418-61-5

5-aminotetrazole

5-Methyl-2-(5-methyl-thien-2-yl)-1,3-thiazole-4-carboxylic acid

5-Methyl-2-(5-methyl-thien-2-yl)-1,3-thiazole-4-carboxylic acid

2-(5-methyl-thien-2-yl)-5-methyl-N-(1H-tetrazole-5-yl)-4-thiazolecarboxamide

2-(5-methyl-thien-2-yl)-5-methyl-N-(1H-tetrazole-5-yl)-4-thiazolecarboxamide

Conditions
ConditionsYield
With CDI In water; N,N-dimethyl-formamide97%
4-(4-biphenyl)-1,1,1-trifluoro-4-methoxybut-3-en-2-one
868662-39-9

4-(4-biphenyl)-1,1,1-trifluoro-4-methoxybut-3-en-2-one

5-aminotetrazole
4418-61-5

5-aminotetrazole

5-([1,1’-biphenyl]-4-yl)-7-trifluoromethyltetrazolo[1,5-a]pyrimidine

5-([1,1’-biphenyl]-4-yl)-7-trifluoromethyltetrazolo[1,5-a]pyrimidine

Conditions
ConditionsYield
With hydrogenchloride In water at 120℃; for 6h; Ionic liquid; regioselective reaction;97%
5-aminotetrazole
4418-61-5

5-aminotetrazole

para-iodoanisole
696-62-8

para-iodoanisole

N,1-bis(4-methoxyphenyl)-1H-tetrazol-5-amine
73565-26-1

N,1-bis(4-methoxyphenyl)-1H-tetrazol-5-amine

Conditions
ConditionsYield
With 1,10-Phenanthroline; copper(II) acetate monohydrate; caesium carbonate In dimethyl sulfoxide at 115℃; for 24h; regioselective reaction;97%
With 1,10-Phenanthroline; cobalt(II) chloride hexahydrate; caesium carbonate In dimethyl sulfoxide at 115℃; regioselective reaction;
5-aminotetrazole
4418-61-5

5-aminotetrazole

4-tolyl iodide
624-31-7

4-tolyl iodide

1-p-tolyl-1H-tetrazol-5-ylamine
39889-77-5

1-p-tolyl-1H-tetrazol-5-ylamine

Conditions
ConditionsYield
With 1,10-Phenanthroline; copper(II) acetate monohydrate; caesium carbonate In dimethyl sulfoxide at 85℃; for 18h; regioselective reaction;97%
With 1,10-Phenanthroline; cobalt(II) chloride hexahydrate; caesium carbonate In dimethyl sulfoxide at 85℃; regioselective reaction;
5-aminotetrazole
4418-61-5

5-aminotetrazole

2-hydroxy-3-pyridinecarboxaldehyde
36404-89-4

2-hydroxy-3-pyridinecarboxaldehyde

1,3-cylohexanedione
504-02-9

1,3-cylohexanedione

9-(2-hydroxypyridin-3-yl)-5,6,7,9-tetrahydrotetrazolo[5,1-b]quinazolin-8(4H)-one

9-(2-hydroxypyridin-3-yl)-5,6,7,9-tetrahydrotetrazolo[5,1-b]quinazolin-8(4H)-one

Conditions
ConditionsYield
With polyethylene glycol (PEG)-400 at 110℃; for 0.5h; Microwave irradiation; Green chemistry;97%
5-aminotetrazole
4418-61-5

5-aminotetrazole

1,3-cylohexanedione
504-02-9

1,3-cylohexanedione

cyclohexanecarbaldehyde
2043-61-0

cyclohexanecarbaldehyde

9-cyclohexyl-5,6,7,9-tetrahydrotetrazolo[5,1-b]quinazolin-8(4H)-one

9-cyclohexyl-5,6,7,9-tetrahydrotetrazolo[5,1-b]quinazolin-8(4H)-one

Conditions
ConditionsYield
With polyethylene glycol (PEG)-400 at 110℃; for 0.5h; Microwave irradiation; Green chemistry;97%
5-aminotetrazole
4418-61-5

5-aminotetrazole

2-methyl-6-nitrobenzoyl chloride
66232-57-3

2-methyl-6-nitrobenzoyl chloride

2-methyl-6-nitro-N-1H-tetrazol-5-ylbenzamide
87693-22-9

2-methyl-6-nitro-N-1H-tetrazol-5-ylbenzamide

Conditions
ConditionsYield
In tetrahydrofuran; water96%
5-aminotetrazole
4418-61-5

5-aminotetrazole

4-nitrobenzaldehdye
555-16-8

4-nitrobenzaldehdye

dimedone
126-81-8

dimedone

6,6-dimethyl-9-(4-nitrophenyl)-5,6,7,9-tetrahydrotetrazolo[5,1-b]quinazolin-8(4H)-one
951923-60-7

6,6-dimethyl-9-(4-nitrophenyl)-5,6,7,9-tetrahydrotetrazolo[5,1-b]quinazolin-8(4H)-one

Conditions
ConditionsYield
With polyethylene glycol (PEG)-400 at 110℃; for 0.5h; Microwave irradiation; Green chemistry;96%
With sulfonated graphitic carbon nitride In ethanol at 80℃; for 4h; Green chemistry; regioselective reaction;95%
With aluminum (III) chloride In acetonitrile for 5h; Reflux;94%
at 160 - 170℃; for 0.183333h;79%
With iodine In isopropyl alcohol for 0.416667h; Reflux;70 %Chromat.
5-aminotetrazole
4418-61-5

5-aminotetrazole

4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

acetoacetic acid methyl ester
105-45-3

acetoacetic acid methyl ester

methyl 7-methyl-5-(4-chlorophenyl)-1,5-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate
367907-09-3

methyl 7-methyl-5-(4-chlorophenyl)-1,5-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate

Conditions
ConditionsYield
With aluminum (III) chloride In acetonitrile for 5h; Reflux;96%
In water at 130 - 170℃;62%
9-hydroxyxanthene
90-46-0

9-hydroxyxanthene

5-aminotetrazole
4418-61-5

5-aminotetrazole

N-(9H-xanthen-9-yl)-1H-tetrazol-5-amine
1408244-74-5

N-(9H-xanthen-9-yl)-1H-tetrazol-5-amine

Conditions
ConditionsYield
With ferric hydrogen sulphate In ethanol for 0.5h; Reflux; regioselective reaction;96%
5-aminotetrazole
4418-61-5

5-aminotetrazole

3,5-dinitro-1H-1,2,4-triazole
26621-32-9

3,5-dinitro-1H-1,2,4-triazole

[aminotetrazolinium(3,5-dinitro-1H-1,2,4-triazolate)]*H2O

[aminotetrazolinium(3,5-dinitro-1H-1,2,4-triazolate)]*H2O

Conditions
ConditionsYield
With water96%
5-aminotetrazole
4418-61-5

5-aminotetrazole

iodobenzene
591-50-4

iodobenzene

fenamole
5467-78-7

fenamole

Conditions
ConditionsYield
With 1,10-Phenanthroline; copper(II) acetate monohydrate; caesium carbonate In dimethyl sulfoxide at 85℃; for 18h; regioselective reaction;96%
With 1,10-Phenanthroline; cobalt(II) chloride hexahydrate; caesium carbonate In dimethyl sulfoxide at 85℃; Reagent/catalyst; Solvent; regioselective reaction;
5-aminotetrazole
4418-61-5

5-aminotetrazole

tert-butyl acetoacetate
1694-31-1

tert-butyl acetoacetate

4-fluorobenzaldehyde
459-57-4

4-fluorobenzaldehyde

tert-butyl 7-(4-fluorophenyl)-5-methyl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate

tert-butyl 7-(4-fluorophenyl)-5-methyl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate

Conditions
ConditionsYield
With polyethylene glycol (PEG)-400 at 110℃; for 0.5h; Microwave irradiation; Green chemistry;96%
5-aminotetrazole
4418-61-5

5-aminotetrazole

4-fluorobenzaldehyde
459-57-4

4-fluorobenzaldehyde

[1-(4-Fluoro-phenyl)-meth-(E)-ylidene]-(1H-tetrazol-5-yl)-amine
145181-97-1

[1-(4-Fluoro-phenyl)-meth-(E)-ylidene]-(1H-tetrazol-5-yl)-amine

Conditions
ConditionsYield
With sulfuric acid In toluene at 100 - 110℃; for 3h;95%
5-aminotetrazole
4418-61-5

5-aminotetrazole

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

ethyl N-(1H-tetrazol-5-yl)formimidate
101071-40-3

ethyl N-(1H-tetrazol-5-yl)formimidate

Conditions
ConditionsYield
In hexane for 6h; Heating;95%
5-aminotetrazole
4418-61-5

5-aminotetrazole

imidazo[1,2-a]quinoline-2-carboxylic acid
68050-43-1

imidazo[1,2-a]quinoline-2-carboxylic acid

N-(1H-tetrazol-5-yl)imidazo[1,2-a]quinoline-2-carboxamide
76577-85-0

N-(1H-tetrazol-5-yl)imidazo[1,2-a]quinoline-2-carboxamide

Conditions
ConditionsYield
With 1,1'-carbonyldiimidazole In N,N-dimethyl-formamide Ambient temperature; 1.) 5 h, 2.) overnight;95%
5-aminotetrazole
4418-61-5

5-aminotetrazole

5-ethyl-4-oxo-4,5-dihydro-pyrrolo[1,2-a]quinoxaline-2-carboxylic acid
69015-34-5

5-ethyl-4-oxo-4,5-dihydro-pyrrolo[1,2-a]quinoxaline-2-carboxylic acid

5-ethyl-4,5-dihydro-4-oxo-N-(1H-tetrazol-5-yl)pyrrolo[1,2-a]quinoxaline-2-carboxamide
76577-74-7

5-ethyl-4,5-dihydro-4-oxo-N-(1H-tetrazol-5-yl)pyrrolo[1,2-a]quinoxaline-2-carboxamide

Conditions
ConditionsYield
With 1,1'-carbonyldiimidazole In N,N-dimethyl-formamide Ambient temperature; 1.) 5 h, 2.) overnight;95%
5-aminotetrazole
4418-61-5

5-aminotetrazole

8-methoxy-imidazo[1,2-a]quinoline-2-carboxylic acid
68050-27-1

8-methoxy-imidazo[1,2-a]quinoline-2-carboxylic acid

8-methoxy-N-(1H-tetrazol-5-yl)imidazo[1,2-a]quinoline-2-carboxamide
76577-87-2

8-methoxy-N-(1H-tetrazol-5-yl)imidazo[1,2-a]quinoline-2-carboxamide

Conditions
ConditionsYield
With 1,1'-carbonyldiimidazole In N,N-dimethyl-formamide Ambient temperature; 1.) 5 h, 2.) overnight;95%
5-aminotetrazole
4418-61-5

5-aminotetrazole

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

tert-butyl N-(1H-1,2,3,4-tetraazol-5-yl)carbamate

tert-butyl N-(1H-1,2,3,4-tetraazol-5-yl)carbamate

Conditions
ConditionsYield
With iodine at 20℃; for 1.75h;95%
5-aminotetrazole
4418-61-5

5-aminotetrazole

hydrazinium 5-aminotetrazolate
58003-04-6

hydrazinium 5-aminotetrazolate

Conditions
ConditionsYield
With hydrazine hydrate In methanol for 3h;95%

4418-61-5Relevant articles and documents

Rapidly, highly yielded and green synthesis of dihydrotetrazolo[1,5-a]pyrimidine derivatives in aqueous media using recoverable Pd (II) thiazole catalyst accelerated by ultrasonic: Computational studies

Abu-Dief, Ahmed M.,Alsoliemy, Amerah,El-Dabea, Tarek,El-Metwaly, Nashwa M.,El-Remaily, Mahmoud Abd El Aleem Ali Ali,Khalifa, Mohamed E.,Soliman, Ahmed M. M.

, (2021/07/02)

Here, we synthesized new thiazole complexes from Cu (II), Fe (III), and Pd (II) ions. Such complexes were characterized to present their chemical formulae, firstly. The octahedral geometry was suggested for the investigated complexes except Pd (II) complex (ARPTPd), which has a square-planer arrangement. ARPTPd was planned to be used as a catalyst for synthesis of dihydrotetrazolo[1,5-a]pyrimidine derivatives at mild conditions. The catalytic activity of ARPTPd complex in four-components reaction approach was deliberately monitored till it reaches the most favorable conditions. The advantages of suggested catalyst were basically summarized by using green solvent (H2O), lower reaction time, and high products yields. Also, the superiority of ARPTPd complex and ultrasonic irradiation towards synthesis of dihydrotetrazolo[1,5-a]pyrimidine derivatives was revealed compared with other Lewis acids, basic, and ionic liquid catalysts. Furthermore, the mildness of conversion and compatibility with different functional groups makes it attractive. In addition, in consecration, computational aspects were often taken according to their effect on the declaration or discrimination of variable functional characteristics. Crystal packing systems of complexes were configured to extract important surface properties. DFT study was also applied to explain the causes behind the superiorly of ARPTPd complex. Also, the optimization process for intermediates was executed to support the suggested mechanism. Finally, this simple, economical, and green catalytic procedure may be applied to the industry in future.

Production process of 5-aminotetrazole

-

Paragraph 0017-0024, (2021/01/15)

The invention belongs to the technical field of chemical synthesis, and particularly discloses a production process of 5-aminotetrazole, which adopts the following synthesis route: aminoguanidine bicarbonate and sulfuric acid are adopted to generate aminoguanidine sulfate; diazotization reaction is carried out on aminoguanidine sulfate and sodium nitrite to generate amidine azide sulfate; and cyclization reaction is performed on the amidine azide sulfate under the action of ammonia water to generate the 5-amino tetrazole. The path is good in safety and few in byproducts; the invention also provides a specific process flow, the process is simple, the operation is easy, and the product yield is high; according to the invention, a high-purity 5-amino tetrazole finished product is obtained bystep-by-step conversion in the diazotization process, control of the addition mode of sodium nitrite and strict control of the temperature and pH in the diazotization and cyclization reaction processes.

A 5 - substituted four nitrogen azole compound of synthetic method (by machine translation)

-

Paragraph 0016; 0017; 0019, (2019/04/04)

The invention discloses a 5 - substituted four nitrogen azole compound of synthetic method, the synthesis method of the process is as follows: to point pen in the autoclave (I) indicated by the nitrile compounds, sodium azide, nickel ferrite and carboxylic acid ammonium ion exchange resin, added with an organic solvent to the cyclization reaction, the reaction solution after the reaction is finished filter, pickling, desolvation and heavy after crystallization, as shown in formula (II) of the 5 - substituted tetrazole compounds, yield is 85 - 95%, purity ≥ 99%; Formula (I) in the formula (II), the substituent R1 Is phenyl, substituted phenyl, C1 - C3 alkyl or amino; substituted phenyl substituent is methyl, methoxy, F or nitro. The invention of 5 - substituted tetrazole compounds synthesis method, adopt the catalytic ferrous acid nickel and carboxylic acid ammonium ion exchange resin catalyst combination, the carboxylic acid [...], not only good general the reaction substrate, the reaction yield is high, and the catalyst is easily separated and recycled, the production cost is reduced and the three waste emissions. (by machine translation)

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