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900015

Sigma-Aldrich

Trimethylpentafluoroethylsilane

97%

Synonym(s):

(Pentafluoroethyl)trimethylsilane

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About This Item

Empirical Formula (Hill Notation):
C5H9F5Si
CAS Number:
124898-13-1
Molecular Weight:
192.20
MDL number:
MFCD04116436
UNSPSC Code:
12352101
PubChem Substance ID:
329769760
NACRES:
NA.22

Assay

97%

form

liquid

refractive index

n/D 1.325

density

1.095 g/mL

SMILES string

C[Si](C)(C)C(F)(F)C(F)(F)F

InChI

1S/C5H9F5Si/c1-11(2,3)5(9,10)4(6,7)8/h1-3H3

InChI key

MTPVUVINMAGMJL-UHFFFAOYSA-N

General description

Trimethylpentafluoroethylsilane ((Pentafluoroethyl)trimethylsilane) is a perfluoroalkylsilane. Alkyl triflates undergo nucleophilic pentafluoroethylation with trimethylpentafluoroethylsilane to form the corresponding pentafluoroethylated alkanes.

Application

Trimethylpentafluoroethylsilane ((Pentafluoroethyl)trimethylsilane) may be used as a perfluoroalkylating reagent for the synthesis of the following quinoline derivatives:
  • 5-bromo-2-(perfluoroethyl)quinoline
  • 8-methoxy-2-(perfluoroethyl)quinoline
  • 1-(perfluoroethyl)isoquinoline
  • 8-(tert-butoxy)-5,7-dichloro-2-(perfluoroethyl)quinolone
It may also be used in the synthesis of pentafluoroethylcyclohexanes.
Trimethylpentafluoroethylsilane has been reported as a Ruppert-Prakash type reagent for the addition of pentafluoroethane. Recent report by Larionov and coworkers displayed the feasibility of adding pentrafluoroethane to N-heterocycles under basic conditions.

Legal Information

Synthetic and mechanistic aspects of the regioselective base-mediated reaction of perfluoroalkyl- and perfluoroarylsilanes with heterocyclic N-oxides

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H225,H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

1.4 °F - closed cup - (calculated)

Flash Point(C)

-17 °C - closed cup - (calculated)

Certificates of Analysis (COA)

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Experimental determination of the conformational free energies (A values) of fluorinated substituents in cyclohexane by dynamic 19 F NMR spectroscopy. Part 2. Extension to fluoromethyl, difluoromethyl, pentafluoroethyl, trifluoromethylthio and trifluoromethoxy groups.
Carcenac Y, et al.
New. J. Chem., 30(3), 447-457 (2006)
A Facile New Method for the Two-step Substitution of Hydroxy Groups in Primary Alcohols for Trifluoromethyl and Pentafluoroethyl Moieties.
Sevenard DV, et al.
Synlett, 2001(03), 0379-0381 (2001)
David E Stephens et al.
Organic & biomolecular chemistry, 12(32), 6190-6199 (2014-07-06)
The scope and mechanistic implications of the direct transformation of heterocyclic N-oxides to 2-trifluoromethyl-, and related perfluoroalkyl- and perfluoroaryl-substituted N-heterocycles has been studied. The reaction is effected by perfluoroalkyl- and perfluorophenyltrimethylsilane in the presence of strong base. In situ displacement

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