318-46-7

Usage

Appearance

White to off-white crystalline powder, which describes the physical form and color of the compound.

Melting point

112-115°C, which is the temperature range at which the compound changes from a solid to a liquid state.

Solubility

Soluble in various organic solvents such as methanol, ethanol, and acetone, which indicates the compound's ability to dissolve in certain liquids.

Uses

Often used as an intermediate in the production of various pharmaceuticals and agrochemicals, which highlights the compound's role in the synthesis of other chemicals.

Synthesis

Mainly used as a building block in the synthesis of other complex organic compounds, which indicates that the compound is a precursor or a starting material in the production of more complex molecules.

Safety

Can be irritant to the skin, eyes, and respiratory system, which emphasizes the need for proper handling and safety precautions when working with this chemical.

Upstream product

• 407-38-5 2,2,2-trifluoroethyl trifluoroacetate 
• 529-34-0 3,4-dihydronaphthalene-1(2H)-one 
• 383-63-1 ethyl trifluoroacetate, 

Downstream Products

• 1581726-23-9 C₁₅H₉F₃N₂S 

Relevant academic research and scientific papers

Stereoarrayed CF3-Substituted 1,3-Diols by Dynamic Kinetic Resolution: Ruthenium(II)-Catalyzed Asymmetric Transfer Hydrogenation

CF3-substituted 1,3-diols were stereoselectively prepared in excellent enantiopurity and high yield from CF3-substituted diketones by using an ansa-ruthenium(II)-catalyzed asymmetric transfer hydrogenation in formic acid/triethylamine. The intermediate mono-reduced alcohol was also obtained in very high enantiopurity by applying milder reaction conditions. In particular, CF3C(O)-substituted benzofused cyclic ketones underwent either a single or a double dynamic kinetic resolution during their reduction. Doubling up: A double dynamic kinetic resolution is described for the ansa-ruthenium(II)-catalyzed asymmetric transfer hydrogenation of diketones in formic acid/triethylamine to yield the title compounds, displaying a stereotriad, in excellent stereopurity. The intermediate mono-reduced alcohols were isolated in very high enantiopurity by using milder reaction conditions.

Highly selective trifluoroacetic ester/ketone metathesis: An efficient approach to trifluoromethyl ketones and esters

A highly selective and atom efficient 'trifluoroacetic ester/ketone metathesis' has been sincerely witnessed. Enolizable alkyl (at least two non-hydrogen atoms) aryl ketones were found to react readily with ethyl trifluoroacetate under the promotion of NaH to afford trifluoroacetic ester/ketone exchange products, trifluoromethyl ketones (TFMKs), and aromatic acid esters, which were quite different from the general Claisen condensation products, 1,3-diketones. The outcome of the reaction between ketone and ethyl trifluoroacetate is strongly related to the structures of substrates, the steric congestion caused by alkyl group is in favor of the C-C bond cleavage. DFT investigation further disclosed that the metathesis reaction was a kinetically favored pathway. Using only a slight excess of cheap trifluoromethylation reagent, simple operation and mild conditions make it a practical method for preparation of TFMKs on large scale, as well as a new choice of converting aryl alkyl ketones to aromatic acid esters.

Discovery and structure-activity relationships study of novel thieno[2,3-b]pyridine analogues as hepatitis C virus inhibitors

Current treatment for hepatitis C is barely satisfactory, there is an urgent need to develop novel agents for combating hepatitis C virus infection. This study discovered a new class of thieno[2,3-b]pyridine derivatives as HCV inhibitors. First, a hit compound characterized by a thienopyridine core was identified in a cell-based screening of our privileged small molecule library. And then, structure activity relationship study of the hit compound led to the discovery of several potent compounds without obvious cytotoxicity in vitro (12c, EC50 = 3.3 μM, SI >30.3, 12b, EC50 = 3.5 μM, SI >28.6, 10l, EC50 = 3.9 μM, SI >25.6, 12o, EC 50 = 4.5 μM, SI >22.2, respectively). Although the mechanism of them had not been clearly elucidated, our preliminary optimization of this class of compounds had provided us a start point to develop new anti-HCV agents.

Synthesis of trifluoromethyl ketones via tandem Claisen condensation and retro-Claisen C-C bond-cleavage reaction

A highly efficient, operationally simple approach to trifluoromethyl ketones has been developed that builds on the use of a tandem process involving Claisen condensation and retro-Claisen C-C bond cleavage reaction. Enolizable alkyl phenyl ketones were found to react readily with ethyl trifuoroacetate under the promotion of NaH to afford trifluoroacetic ester/ketone exchange products, trifluoromethyl ketones, which were quite different from the general Claisen condensation products, β-diketones. This procedure uses readily available starting materials and can be extended to the preparation of perfluoroalkyl ketones in excellent yield.

Cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes - A new approach to diverse CF3-substituted fluorenes, dibenzofurans, 9,10-dihydrophenanthrenes and 6H-benzo[c]chromenes

Trifluoromethyl-substituted fluorenes, dibenzofurans, 9,10- dihydrophenanthrenes and 6H-benzo[c]chromenes were prepared by formal [3+3] cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes. The reactions proceeded with very good regioselectivity. The

Halogenation of fluorinated cyclic 1,3-dicarbonyl compounds: new aspects of synthetic application

In order to elaborate on an approach towards 2-(fluoroacyl)phenols being the superior alternative to the conventional Fries-rearrangement based methodology, the behaviour of cyclic fluorinated 1,3-dicarbonyls in reactions with halogenating agents was examined. The synthetic relevance of the polyhalogenated compounds obtained was demonstrated by the synthesis of several new heterocycles. An aromatization via a halogenation-dehydrohalogenation sequence proved to be a rewarding synthetic route to 2-(fluoroacyl)phenols and previously unknown 3-(fluoroacyl)thiochromones. The structure of one of the synthesized compounds was confirmed by X-ray diffraction analysis.

Synthesis of fluorinated heterocycles

Selected 1,3-diketones having a trifluoromethyl group and/or a fluorine in the 2-position were condensed with aromatic hydrazines, hydroxylamine, urea, thiourea, guanidine, and substituted anilines producing pyrazoles, isoxazoles, pyrimidines, and quinolines, respectively, in yields ranging from 27 to 87%.

Substituted pyrazolyl benzenesulfonamides for use in veterinary therapies

A method of using pyrazolyl benzenesulfonamide compounds in treating inflammation and inflammation-related disorders in companion animals is disclosed.

Substituted pyrazolyl benzenesulfonamides for the treatment of inflammation

A class of pyrazolyl benzenesulfonamide compounds is described for use in treating inflammation and inflammation-related disorders. Compounds of particular interest are defined by Formula II: STR1 or a pharmaceutically-acceptable salt thereof.

Conformationally restricted 1,5-diarylpyrazoles are selective COX-2 inhibitors

Benzothiopyranopyrazoles and benzopyranopyrazoles containing either a sulfone or sulfonamide moiety were synthesized and tested for COX-1 and COX-2 inhibition. This new class of COX-2 selective inhibitors possess antiinflammatory activity in vivo.