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Sigma-Aldrich

N-Fluorobenzenesulfonimide

97%

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Synonym(s):
N-Fluorodi(benzenesulfonyl)amine, N-Fluorodibenzenesulfonimide, NFSI
Linear Formula:
(C6H5SO2)2NF
CAS Number:
133745-75-2
Molecular Weight:
315.34
Beilstein:
5348902
MDL number:
MFCD00144885
PubChem Substance ID:
24864479
NACRES:
NA.22

Quality Level

100

Assay

97%

form

powder

mp

110 °C (dec.) (lit.)

SMILES string

FN(S(=O)(=O)c1ccccc1)S(=O)(=O)c2ccccc2

InChI

1S/C12H10FNO4S2/c13-14(19(15,16)11-7-3-1-4-8-11)20(17,18)12-9-5-2-6-10-12/h1-10H

InChI key

RLKHFSNWQCZBDC-UHFFFAOYSA-N

Related Categories

General description

N-Fluorobenzenesulfonimide (NFSi) is a commonly used electrophilic fluorinating agent in organic synthesis to introduce fluorine into neutral organic molecules. It is also used to fluorinate nucleophilic substrates such as reactive organometallic species and malonate anions.
NFSi can be synthesized by the reaction of benzenesulfonimide with fluorine.

Application

Reagent employed in a palladium-catalyzed enantioselective fluorination of t-butoxycarbonyl lactones and lactams. Also used in the electrophilic difluorination of dihalopyridines with butyl lithium and in the direct conversion of alcohols to dibenzenesulfonamides with triphenylphosphine.
Stable, easy-to-handle, crystalline material which readily transfers F+ to enolates and carbanions.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315 - H319 - H335

Hazard Classifications

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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Tetrahedron Letters, 47, 8457-8457 (2006)
Anthony A Fodor et al.
The Journal of general physiology, 127(6), 755-766 (2006-06-01)
The study of ion channel function is constrained by the availability of structures for only a small number of channels. A commonly used bioinformatics technique is to assert, based on sequence similarity, that a domain within a channel of interest
N-Fluorobenzenesulfonimide
Poss AJ
Encyclopedia of Reagents for Organic Synthesis, Second Edition, 23(18), 2719-2720 (2001)
N-fluorobenzenesulfonimide
Bizet V
Synlett, 23(18), 2719-2720 (2012)
Toshiaki Suzuki et al.
The Journal of organic chemistry, 72(1), 246-250 (2006-12-30)
An efficient catalytic enantioselective fluorination of tert-butoxycarbonyl lactones and lactams is reported. Reactions of the lactone substrates proceeded smoothly in an alcoholic solvent with a catalytic amount of chiral Pd(II) complex. In the case of the less acidic lactam substrates
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