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An early report (1949) describes the photochemical reaction of iodotrifluoromethane with ethylene to 3-iodo-1,1,1-trifluoropropane. [53] Reagents that have been reported for the direct trifluoromethylation of arenes are CF 3 I, CF 3 Br (thermal or photochemical), silver trifluoroacetate /TiO 2 (photochemical) and sodium ...
The halogenation of 2-(Trifluoromethyl)aniline [88-17-5] (1) with iodine and sodium bicarbonate resulted in 2-Amino-5-Iodobenzotrifluoride [97760-97-9] (2). Protection with acetic anhydride followed by nucleophilic aromatic displacement with copper(I)cyanide gave N-[4-cyano-2-(trifluoromethyl)phenyl]acetamide [175277-96-0] ( 3 ).
4-Fluoroaniline can be prepared by the hydrogenation of 4-nitrofluorobenzene. [2] It is a common building block in medicinal chemistry and related fields. [3] For example, it is a precursor to the fungicide fluoroimide or the fentanyl analogue parafluorofentanyl. It has also been evaluated for the production of ligands for homogeneous catalysis ...
An additional stabilization is achieved by the trifluoromethyl group, which acts as a strong electron-withdrawing group using the sulfur atom as a bridge. Triflates have also been applied as ligands for group 11 and 13 metals along with lanthanides. Lithium triflates are used in some lithium ion batteries as a component of the electrolyte.
This can also explain why phosphorus in phosphanes can't donate electron density to carbon through induction (i.e. +I effect) although it is less electronegative than carbon (2.19 vs 2.55, see electronegativity list) and why hydroiodic acid (pKa = -10) being much more acidic than hydrofluoric acid (pKa = 3). (That's 10 13 times more acidic than ...
4-Cyano-3-(trifluoromethyl)aniline, also known as 4-amino-2-(trifluoromethyl)benzonitrile, is a cyanated and trifluoromethylated derivative of aniline. It is the starting material in one of the chemical syntheses of the nonsteroidal antiandrogen bicalutamide. [1]
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 ...
It is unclear why trifluralin's exotic 4-trifluoromethyl was tested so early (1960), before more common candidates such as fluoro, bromo, or iodo. [ 7 ] By 1968, trifluralin was internationally available, including Australia and New Zealand, [ 6 ] and trifluralin was the 5th most used herbicide in the US, at 22,960,000 pounds (10,410 t) by 1974.
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