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For small-scale laboratory preparations, trifluorotoluene is synthesized by coupling an aromatic halide and trifluoromethyl iodide in the presence of a copper catalyst: [2] PhX + CF 3 I → PhCF 3 (where X = I, Br) Industrial production is done by reacting benzotrichloride with hydrogen fluoride in a pressurized reactor. [3] PhCCl 3 + 3 HF → ...
S-(trifluoromethyl)dibenzothiophenium tetrafluoroborate is a commercially available and known trifluoromethylation reagent based on the same principle first documented in 1990. [ 64 ] [ 65 ] In this type of compound sulfur has been replaced by oxygen , selenium and tellurium .
Two other isomers are also known: 2-trifluoromethylbenzaldehyde and 3-trifluoromethylbenzaldehyde. These compounds are derivatives of benzaldehyde with trifluoromethyl substituents. The CF 3 group enhances the electrophilicity of the formyl group and provides a label for analysis by fluorine-19 nuclear magnetic resonance spectroscopy.
Trifluoromethyl group covalently bonded to an R group. The trifluoromethyl group is a functional group that has the formula-CF 3. The naming of is group is derived from the methyl group (which has the formula -CH 3), by replacing each hydrogen atom by a fluorine atom. Some common examples are trifluoromethane H– CF 3, 1,1,1-trifluoroethane H ...
Fluoroform is weakly acidic with a pK a = 25–28 and quite inert. Attempted deprotonation results in defluorination to generate F − and difluorocarbene (CF 2).Some organocopper and organocadmium compounds have been developed as trifluoromethylation reagents.
Trifluoromethoxy group. The trifluoromethoxy group is the chemical group –O– CF 3.It can be seen as a methoxy group –O– CH 3 whose hydrogen atoms are replaced by fluorine atoms; or as a trifluoromethyl group attached to the rest of the molecule by a bridging oxygen atom; either leads to viable syntheses. [1]
1-Chloro-3,3,3-trifluoropropene (HFO-1233zd) is the unsaturated chlorofluorocarbon with the formula HClC=C(H)CF 3.The compound exists as E- (cis-) and Z- (trans-) isomers.The trans-isomer of this colorless gas is of interest as a more environmentally friendly (lower GWP; global warming potential) refrigerant in air conditioners. [1]
(Bis(trifluoroacetoxy)iodo)benzene, C 6 H 5 I(OOCCF 3) 2. Trifluoroperacetic acid is primarily used as an oxidising agent. [5] [7] In September 1953, the Journal of the American Chemical Society published work by William D. Emmons and Arthur F. Ferris reporting that this reagent, generated in situ, was capable of oxidising aniline to ...