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528226

Sigma-Aldrich

5-Bromo-2(1H)-pyridone

97%

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About This Item

Empirical Formula (Hill Notation):
C5H4BrNO
CAS Number:
Molecular Weight:
174.00
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

97%

mp

180-183 °C (lit.)

functional group

bromo

SMILES string

BrC1=CNC(=O)C=C1

InChI

1S/C5H4BrNO/c6-4-1-2-5(8)7-3-4/h1-3H,(H,7,8)

InChI key

NDMZZQRNZFWMEZ-UHFFFAOYSA-N

General description

5-Bromo-2(1H)-pyridone undergoes difluormethylation in the presence of sodium chlorodifluoroacetate (ClCF2COONa) and methyl cyanide.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Makoto Ando et al.
Organic letters, 8(17), 3805-3808 (2006-08-11)
[reaction: see text] A novel one-pot synthesis of N-difluoromethyl-2-pyridones is described. N-(Pyridin-2-yl)acetamide derivatives were excellent precursors for the preparation of N-difluoromethyl-2-pyridone derivatives. Difluoromethylation of 2-acetaminopyridine derivatives was achieved with sodium chlorodifluoroacetate as a difluorocarbene source in the presence of a

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