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Basic Information
CAS No.: 133940-72-4
Name: 2,5-Pyrazinedicarbonitrile, 3,6-diamino-
Molecular Structure:
Molecular Structure of 133940-72-4 (2,5-Pyrazinedicarbonitrile, 3,6-diamino-)
Formula: C6H4N6
Molecular Weight: 160.138
Synonyms: 2,5-Pyrazinedicarbonitrile, 3,6-diamino-
Density: 1.55±0.1 g/cm3(Predicted)
Boiling Point: 586.8±50.0 °C(Predicted)
PSA: 126.13000
LogP: -0.10434
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Synthetic route

2,3-diamino-3-(ethylthio)acrylonitrile

68-04-2

sodium citrate

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

Conditions
ConditionsYield
With citric acid In 1,2-dimethoxyethane; water48.7%

(2E)-2,3-diamino-3-(phenylthio)acrylonitrile

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

Conditions
ConditionsYield
In 1,2-dimethoxyethane; water at 20℃; for 5h; pH=3;45%

2,3-diamino-3-(4-chloro-phenylthio)acrylonitrile

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

Conditions
ConditionsYield
40.3%
542-69-8

1-iodo-butane

592-82-5

butyl isothiocyanate

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

152093-03-3

3,8-di-n-butyl-2,7-di-n-butylthio-4,9-diimino-3,4,8,9-tetrahydropyrimido[4,5-g]pteridine

Conditions
ConditionsYield
With sodium hydride In N,N-dimethyl-formamide for 0.166667h;72%
...Expand
108-94-1

cyclohexanone

74-89-5

methylamine

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

4,9-bis(methylamino)bisspiro[1,2,6,7-tetrahydropyrimido[4,5-g]pteridine[2,1':7,1'']biscyclohexane]

Conditions
ConditionsYield
Stage #1: methylamine; 3,6-diaminopyrazine-2,5-dicarbonitrile In ethanol; N,N-dimethyl-formamide at 20℃; for 144h;
Stage #2: cyclohexanone In ethanol; N,N-dimethyl-formamide for 0.5h; Heating;		43%
...Expand
133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

1609-86-5

Tert-butyl isocyanate

A

5-amino-3-tert-butyl-6-cyano-1H-2,3-dihydroimidazo[4,5-b]pyrazin-2-one

B

3-tert-butyl-5-(1-N-tert-butylcarbamoylamino)-6-cyano-1H-2,3-dihydroimidazo[4,5-b]pyrazin-2-one

Conditions
ConditionsYield
With sodium hydride In N,N-dimethyl-formamide at 20℃; for 2h;A 20%
B 36%
...Expand
111-36-4

n-butyl isocyanide

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

3,7-dibutyl-8-imino-2,6-dioxo-1,2,3,6,7,8-hexahydro-1,3,4,5,7,9-hexaaza-cyclopenta[b]naphthalene-5-carboxylic acid butylamide

Conditions
ConditionsYield
With sodium hydride In N,N-dimethyl-formamide at 20℃; for 2h;23%
107-10-8

propylamine

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

A

3,6-diamino-5-cyano-N-propyl-pyrazine-2-carboxamidine

B

C12H22N8

Conditions
ConditionsYield
In N,N-dimethyl acetamide at 20℃; for 9h;A 14%
B 15%
...Expand
459-46-1

4-Fluorobenzyl bromide

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

C34H24F4N6

Conditions
ConditionsYield
Stage #1: 4-Fluorobenzyl bromide; 3,6-diaminopyrazine-2,5-dicarbonitrile With N,N-dimethyl acetamide at 0℃; for 0.5h;
Stage #2: With sodium hydroxide at 20℃; for 0.5h;		5%
4282-40-0

1-Iodoheptane

133940-72-4

3,6-diaminopyrazine-2,5-dicarbonitrile

2,5-bis(N,N-diheptylamino)-3,6-dicyanopyrazine

Conditions
ConditionsYield
With sodium hydroxide In N,N-dimethyl acetamide at 20℃;4.4%
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