ChemicalBook--->CAS DataBase List--->19828-20-7

19828-20-7

19828-20-7 Structure

19828-20-7 Structure
IdentificationBack Directory
[Name]

2-Amino-5-Acetylpyridine
[CAS]

19828-20-7
[Synonyms]

5-ACETO-2-AMINOPYRIDINE
2-Amino-5-Acetylpyridine
3-Acetyl-6-aminopyridine
1-(6-AMINOPYRIDIN-3-YL)ETHANONE
1-(6-Amino-3-pyridinyl)-ethanone
1-(6-Amino-3-pyridinyl)-1-ethanone
1-(6-aminopyridin-3-yl)ethan-1-one
Ethanone, 1-(6-amino-3-pyridinyl)-
[Molecular Formula]

C7H8N2O
[MDL Number]

MFCD09038484
[MOL File]

19828-20-7.mol
[Molecular Weight]

136.15
Chemical PropertiesBack Directory
[Boiling point ]

332℃
[density ]

1.168
[Fp ]

155℃
[storage temp. ]

under inert gas (nitrogen or Argon) at 2–8 °C
[pka]

4.76±0.13(Predicted)
[Appearance]

Light yellow to yellow Solid
Safety DataBack Directory
[Symbol(GHS) ]

Exclamation Mark (GHS07)
GHS07
[Signal word ]

Warning
[Hazard statements ]

H315-H319-H335-H302
[Precautionary statements ]

P264-P280-P305+P351+P338-P337+P313P-P264-P270-P301+P312-P330-P501-P264-P280-P302+P352-P321-P332+P313-P362
Spectrum DetailBack Directory
[Spectrum Detail]

2-Amino-5-Acetylpyridine(19828-20-7)1HNMR
Hazard InformationBack Directory
[Synthesis]

2-Chloro-5-acetylpyridine

55676-22-7

2-Amino-5-Acetylpyridine

19828-20-7

Step 4 Synthesis of 1-(6-aminopyridin-3-yl)ethanone: To a 1L autoclave was added a saturated aqueous ammonia solution (750 mL) of 1-(6-chloropyridin-3-yl)ethanone (40 g, 257.10 mmol). The reaction mixture was stirred at 130°C for 10 hours. After completion of the reaction, the mixture was cooled and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent ratio 50:1 dichloromethane/methanol) to afford the target compound 1-(6-aminopyridin-3-yl)ethanone in a yield of 33 g in 89% yield as a yellow solid.

[References]

[1] Bioorganic and Medicinal Chemistry Letters, 2008, vol. 18, # 23, p. 6093 - 6096
[2] Bioorganic and Medicinal Chemistry Letters, 2008, vol. 18, # 24, p. 6482 - 6485
[3] Patent: US2007/27184, 2007, A1. Location in patent: Page/Page column 17; 19
[4] Patent: WO2017/184547, 2017, A1. Location in patent: Paragraph 00379
[5] Patent: US2007/99930, 2007, A1. Location in patent: Page/Page column 45
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