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233277

Sigma-Aldrich

2,6-Difluoropyridine

99%

Synonym(s):

2,6-Difluoropyridine

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About This Item

Empirical Formula (Hill Notation):
C5H3F2N
CAS Number:
1513-65-1
Molecular Weight:
115.08
Beilstein:
1422549
EC Number:
216-152-8
MDL number:
MFCD00006227
UNSPSC Code:
12352100
PubChem Substance ID:
24853965
NACRES:
NA.22

Quality Level

100

Assay

99%

form

liquid

refractive index

n20/D 1.437 (lit.)

bp

124.5 °C/743 mmHg (lit.)

density

1.268 g/mL at 25 °C (lit.)

SMILES string

Fc1cccc(F)n1

InChI

1S/C5H3F2N/c6-4-2-1-3-5(7)8-4/h1-3H

InChI key

MBTGBRYMJKYYOE-UHFFFAOYSA-N

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General description

Lithium diisopropylamide (LDA)-mediated ortholithiations of 2,6-difluoropyridine in tetrahydrofuran at -78°C has been studied using a combination of IR and NMR spectroscopic and computational methods. Polycondensation of bistrimethylsilyl derivatives of various diphenols with 2,6-difluoropyridine in N-methylpyrrolidone in the presence of K2CO3 has been investigated.

Application

2,6-Difluoropyridine has been used in the preparation of poly(pyridine ether)s via polycondensation with silylated 1,1,1-tris(4-hydroxyphenyl)ethane.

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Warning

Hazard Statements

H226,H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

91.4 °F - closed cup

Flash Point(C)

33 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Sigma-Aldrich

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Lekha Gupta et al.
The Journal of organic chemistry, 78(9), 4214-4230 (2012-12-29)
Lithium diisopropylamide (LDA)-mediated ortholithiations of 2-fluoropyridine and 2,6-difluoropyridine in tetrahydrofuran at -78 °C were studied using a combination of IR and NMR spectroscopic and computational methods. Rate studies show that a substrate-assisted deaggregation of LDA dimer occurs parallel to an
Cyclic poly (pyridine ether) s by the polycondensation of 2, 6-difluoropyridine with various diphenols.
Kricheldorf HR, et al.
Journal of Polymer Science Part A: Polymer Chemistry, 430(20), 4781-4789 (2005)
Multicyclic polyethers derived from 1, 1, 1-tris (4-hydroxyphenyl) ethane and 2, 6-dihalopyridines.
Kricheldorf HR, et al.
Journal of Polymer Science Part A: Polymer Chemistry, 42(22), 5725-5735 (2004)
Qianglu Lin et al.
Journal of the American Chemical Society, 139(19), 6644-6653 (2017-04-22)
The use of semiconductor nanocrystal quantum dots (QDs) in optoelectronic devices typically requires postsynthetic chemical surface treatments to enhance electronic coupling between QDs and allow for efficient charge transport in QD films. Despite their importance in solar cells and infrared

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