250600

Sigma-Aldrich

Tris(dimethylamino)sulfonium difluorotrimethylsilicate

technical grade

Synonym(s):
TAS-F, Tris(dimethylamino)sulfur trimethylsilyl difluoride, TASF
Linear Formula:
[(CH3)2N]3S[(CH3)3SiF2]
CAS Number:
Molecular Weight:
275.48
Beilstein/REAXYS Number:
3577020
MDL number:
PubChem Substance ID:

grade

technical grade

Quality Level

reaction suitability

reagent type: reductant

storage temp.

2-8°C

SMILES string

C[Si-](C)(C)(F)F.CN(C)[S+](N(C)C)N(C)C

InChI

1S/C6H18N3S.C3H9F2Si/c1-7(2)10(8(3)4)9(5)6;1-6(2,3,4)5/h1-6H3;1-3H3/q+1;-1

InChI key

JMGVTLYEFSBAGJ-UHFFFAOYSA-N

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General description

Tris(dimethylamino)sulfonium difluorotrimethylsilicate is widely used in organic synthesis as a source of fluoride ion for the synthesis of fluorinated compounds by C-F bond formation. It is also used as a reagent in hydrosilylation, cyanomethylation of ketones and Pd-catalyzed cross-coupling reactions.

Application

Tris(dimethylamino)sulfonium difluorotrimethylsilicate (TASF2SiMe3) can be used as a mild deprotecting reagent for the cleavage of silicon protecting groups.
It can also be used
  • To synthesize deoxyfluoro sugars by reacting with trifluoromethanesulfonyl derivatives of partially protected sugars.
  • As a reagent for the fluorination of hydroxyl-containing compounds.

Packaging

1, 5 g in poly bottle

Other Notes

Remainder tris(dimethylamino)sulfonium bifluoride

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Supp Hazards

EUH014

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN 3261 8 / PGII

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Tris (dimethylamino) sulfonium Difluorotrimethylsilicate
RajanBabu TV , et al.
Encyclopedia of Reagents for Organic Synthesis, Second Edition, 1-12 (2001)
Stephen R Groskreutz et al.
Journal of chromatography. A, 1523, 193-203 (2017-07-20)
On-column solute focusing is a simple and powerful method to decrease the influence of precolumn band spreading and increase the allowable volume injected increasing sensitivity. It relies on creating conditions so that the retention factor, k', is transiently increased during...
The rapid synthesis of deoxyfluoro sugars using tris (dimethylamino) sulfonium difluorotrimethylsilicate (TASF)
Doboszewski B, et al.
Canadian Journal of Chemistry, 65(2), 412-419 (1987)
Utility of tris(dimethylamino)sulphonium difluorotrimethylsilicate (TASF) for the rapid synthesis of deoxyfluoro sugars
Walter A. Szarek, et al.
Journal of the Chemical Society. Chemical Communications, 663-663 (1985)
Tris (dimethylamino) sulfonium difluorotrimethylsilicate, a mild reagent for the removal of silicon protecting groups
Scheidt KA, et al.
The Journal of Organic Chemistry, 63(19), 6436-6437 (1998)

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