8-(trifluoromethyl)-8-thiatricyclo[7.4.0.0,2,7]trideca-1(13),2,4,6,9,11-hexaen-8-ium, tetrafluoroboranuide
Product replacement available
EN300-18527578
Product class
Building Blocks
CAS number
131880-16-5
MW
340.07
Purity
95%
Lead time
from 7 days delivery time
Reagent for trifluoromethylating

Umemoto reagent I is an electrophilic trifluoromethylating agent used to transfer the trifluoromethyl group to nucleophiles such as silyl enol ethers and β-ketoesters 1. It is also employed in catalytic strategies including Pd-catalyzed aromatic C-H trifluoromethylation, Cu-catalyzed trifluoromethylation, and photoredox-catalyzed radical trifluoromethylation2. The reagent is a white crystalline solid that should be stored in a cool, dry place due to its potentially harmful properties.
Synonyms: S-(Trifluoromethyl)dibenzothiophenium tetrafluoroborate; Umemoto’s Reagent I
1. Umemoto, T. Exploration of Fluorination Reagents Starting from FITS Reagents. J Fluor Chem 2014, 167, 3–15. https://doi.org/10.1016/j.jfluchem.2014.07.029 2. Riou, M.; Koike, T. S -(Trifluoromethyl)Dibenzothiophenium Tetrafluoroborate. In Encyclopedia of Reagents for Organic Synthesis; John Wiley & Sons, Ltd, 2018; pp 1–3. https://onlinelibrary.wiley.com/doi/10.1002/047084289X.rn01212.pub2
Name:
8-(trifluoromethyl)-8-thiatricyclo[7.4.0.0,2,7]trideca-1(13),2,4,6,9,11-hexaen-8-ium, tetrafluoroboranuide
SMILES:
F[B-](F)(F)F.FC(F)(F)[S+]1C2=CC=CC=C2C3=CC=CC=C31
CAS number:
131880-16-5
Product class:
Building Blocks
ACD number:
MFCD01073545
CLogP:
4.091
Class:
Other
Formula:
C13H8BF7S
Subclass:
Other
MW:
340.07