Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

483869

Sigma-Aldrich

5-(Trifluoromethyl)dibenzothiophenium tetrafluoroborate

97%

Synonym(s):

S-(Trifluoromethyl)dibenzothiophenium tetrafluoroborate, Umemoto reagent

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C13H8BF7S
CAS Number:
131880-16-5
Molecular Weight:
340.07
MDL number:
MFCD01073545
UNSPSC Code:
12352101
PubChem Substance ID:
24871922
NACRES:
NA.22

Quality Level

100

Assay

97%

mp

162-164 °C (lit.)

SMILES string

F[B-](F)(F)F.FC(F)(F)[S+]1c2ccccc2-c3ccccc13

InChI

1S/C13H8F3S.BF4/c14-13(15,16)17-11-7-3-1-5-9(11)10-6-2-4-8-12(10)17;2-1(3,4)5/h1-8H;/q+1;-1

InChI key

VTVISWLINKWMQZ-UHFFFAOYSA-N

Application

  • Pd(II)-catalyzed trifluoromethylation
  • Copper-catalyzed trifluoromethylation of aryl boronic acids using a Collidine as a trifluoromethylating reagent
  • Pd-catalyzed electrophilic ortho-trifluoromethylation of arenes

Used in the stereoselective preparation of
  • Trifluoromethyl-substituted alkenes via copper-catalyzed trifluoromethylation of terminal alkenes
  • Trifluoromethyl-bearing quaternary carbon centers by Pd-catalyzed intramolecular decarboxylative allylation of α-trifluoromethyl β-keto esters

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCN8985
MKCM0995
MKCH9459
MKCF9562
MKCC3478

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Jun Xu et al.
Chemical communications (Cambridge, England), 47(14), 4300-4302 (2011-03-08)
A copper-catalyzed process for trifluoromethylation of aryl, heteroaryl, and vinyl boronic acids has been developed. The reaction is conducted under mild conditions and shows tolerance to moisture and a variety of functional groups.
Construction of Trifluoromethyl-Bearing Quaternary Carbon Centers by Intramolecular Decarboxylative Allylation of α-Trifluoromethyl β-Keto Esters
Shibata, N.; et al.
Advanced Synthesis & Catalysis, 353, 2037-2041 (2011)
Xisheng Wang et al.
Journal of the American Chemical Society, 132(11), 3648-3649 (2010-02-27)
A Pd(II)-catalyzed C-H activation/trifluoromethylation of arenes with an electrophilic trifluoromethylation reagent using diverse heterocycle directing groups is reported. The presence of trifluoroacetic acid is crucial for this catalytic reaction.
Jun Xu et al.
Journal of the American Chemical Society, 133(39), 15300-15303 (2011-09-15)
An unprecedented type of reaction for Cu-catalyzed trifluoromethylation of terminal alkenes is reported. This reaction represents a rare instance of catalytic trifluoromethylation through C(sp(3))-H activation. It also provides a mechanistically unique example of Cu-catalyzed allylic C-H activation/functionalization. Both experimental and
Xing-Guo Zhang et al.
Journal of the American Chemical Society, 134(29), 11948-11951 (2012-07-12)
A Pd(II)-catalyzed trifluoromethylation of ortho C-H bonds with an array of N-arylbenzamides derived from benzoic acids is reported. N-Methylformamide has been identified as a crucial promoter of C-CF(3) bond formation from the Pd center. X-ray characterization of the C-H insertion

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service