ChemicalBook--->CAS DataBase List--->1379338-74-5

1379338-74-5

1379338-74-5 Structure

1379338-74-5 Structure
IdentificationBack Directory
[Name]

5,7-Dichloropyrido[4,3-b]pyrazine
[CAS]

1379338-74-5
[Synonyms]

5,7-Dichloropyrido[4,3-b]pyrazine
Pyrido[3,4-b]pyrazine, 5,7-dichloro-
[Molecular Formula]

C7H3Cl2N3
[MDL Number]

MFCD19707629
[MOL File]

1379338-74-5.mol
[Molecular Weight]

200.025
Chemical PropertiesBack Directory
[Boiling point ]

350.8±37.0 °C(Predicted)
[density ]

1.573±0.06 g/cm3(Predicted)
[storage temp. ]

Inert atmosphere,2-8°C
[pka]

-0.71±0.30(Predicted)
[Appearance]

yellow solid
[InChI]

InChI=1S/C7H3Cl2N3/c8-5-3-4-6(7(9)12-5)11-2-1-10-4/h1-3H
[InChIKey]

SNWNPXRUXXCDOM-UHFFFAOYSA-N
[SMILES]

C12=C(Cl)N=C(Cl)C=C1N=CC=N2
Safety DataBack Directory
[Symbol(GHS) ]


GHS06
[Signal word ]

Danger
[Hazard statements ]

H301-H319-H331-H401
[Precautionary statements ]

P264-P270-P301+P310-P321-P330-P405-P501-P280-P305+P351+P338-P337+P313-P261-P271-P304+P340-P311-P403+P233-P273
Spectrum DetailBack Directory
[Spectrum Detail]

5,7-Dichloropyrido[4,3-b]pyrazine(1379338-74-5)1HNMR
Hazard InformationBack Directory
[Synthesis]

2,6-DICHLOROPYRIDINE-3,4-DIAMINE

101079-63-4

1,2-Ethenediylbis(oxy) (9CI)

131543-46-9

5,7-Dichloropyrido[4,3-b]pyrazine

1379338-74-5

2,6-Dichloro-3,4-pyridinediamine (7.85 g, 0.044 mol) and 40% aqueous glyoxal (26 g, 0.178 mol) were mixed in ethanol and the reaction was carried out at reflux overnight. After completion of the reaction, the mixture was cooled to room temperature, the precipitate was collected, washed with ethanol and dried under vacuum to give 5,7-dichloropyrido[3,4-b]pyrazine (7.32 g, 83% yield).

[References]

[1] Patent: WO2012/167733, 2012, A1. Location in patent: Page/Page column 35
[2] Patent: WO2012/167423, 2012, A1. Location in patent: Page/Page column 32
[3] Patent: US2014/121200, 2014, A1. Location in patent: Paragraph 0143; 0147
[4] Patent: WO2012/123312, 2012, A1. Location in patent: Page/Page column 63
[5] Patent: US2014/5188, 2014, A1. Location in patent: Paragraph 0562; 0563; 0564
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