Trifluormethansäure
Trifluoromethane or fluoroform is the chemical compound with the formula CHF3. It is one of the "haloforms", a class of compounds with the formula CHX3 (X = halogen) with C3v symmetry. Fluoroform is used in diverse applications in organic synthesis. It is not an ozone depleter but is a greenhouse gas. See more About 20 million kg per year are produced industrially as both a by-product of and precursor to the manufacture of Teflon. It is produced by reaction of chloroform with HF: CHCl3 + 3 HF → … See more CHF3 is used in the semiconductor industry in plasma etching of silicon oxide and silicon nitride. Known as R-23 or HFC-23, it was also a useful refrigerant, sometimes as a replacement for See more • McBee E. T. (1947). "Fluorine Chemistry". Industrial & Engineering Chemistry. 39 (3): 236–237. doi:10.1021/ie50447a002. • Oram D. E.; Sturges W. T.; Penkett S. A.; McCulloch A.; Fraser P. J. (1998). "Growth of fluoroform (CHF3, HFC-23) in the background atmosphere" See more CHF3 is a potent greenhouse gas. A ton of HFC-23 in the atmosphere has the same effect as 11,700 tons of carbon dioxide. This equivalency, … See more • International Chemical Safety Card 0577 • MSDS at Oxford University • MSDS at mathesontrigas.com • Coupling of fluoroform with aldehydes using an electrogenerated base See more WebActivator for direct glycosylation with anomeric hydroxy sugars. Trifluoromethanesulfonic anhydride can be used as: A trifluoromethylation reagent for the synthesis of …
Trifluormethansäure
Did you know?
WebMar 17, 2024 · Trifluoromethanesulfonic acid, also known as triflic acid, TFMS, TFSA, HOTf or TfOH, is a sulfonic acid with the chemical formula CF3SO3H. It is often regarded as one of the strongest acids, and is one of a number of so-called "superacids". it is used in the manufacture of pharmaceuticals, agricultural chemicals and polymers. WebMar 25, 2024 · A method for producing an ether esterol, preferably a polyether esterol, is provided. The method comprises reacting an H-functional starter substance (1) with a cyclic anhydride (2) in the presence of a catalyst (4), wherein the cyclic anhydride (2) contains a specific alkylsuccinic acid anhydride (2-1) and the catalyst (4) is an amine, a double metal …
WebTetrafluoromethane, also known as carbon tetrafluoride or R-14, is the simplest perfluorocarbon (C F 4).As its IUPAC name indicates, tetrafluoromethane is the perfluorinated counterpart to the hydrocarbon methane.It can also be classified as a haloalkane or halomethane.Tetrafluoromethane is a useful refrigerant but also a potent …
Trifluormethansulfonsäure ist eine bei Standardbedingungen klare, farblose Flüssigkeit mit einem Siedepunkt von 162 °C. Die Verbindung raucht an der Luft, wobei sich das stabile Monohydrat (eigentlich: Oxoniumtrifluormethylsulfonat) bildet, welches einen Schmelzpunkt von 36 °C besitzt und stark hygroskopisch ist. Neben dem Monohydrat sind noch weitere Hydrate, ein Dihydrat, ein Tetrahydrat und ein Hexahydrat bekannt, die allerdings schon unterhalb der Raumtemperatur sc… WebTrifluoromethane. CHF₃. Halocarbon-23. Fluoroform. Product information Characteristics Physical data Product specification Shipping information High selective dry plasma etch of silicon nitride or silicon oxide etching. Colorless, liquefied gas with an ethereal odor. Poor warning properties at low concentrations. Asphyxiant in high ...
WebMar 9, 2024 · Trimethylsilyl Trifluoromethanesulfonate is used in combination with boron trifluoride eth yl ether to prepare a Lewis acid that is more powerful than its components and especially effective in acetonitrile solvent. Trimethylsilyl is a common reagent used in a Dieckmann-like cyclization of ester-imides and diesters.
WebA general procedure is described for the regiospecific preparation of 1-substituted-5-hydroxy-1H-pyrazoles containing differentiated ester moieties at the 3- and 4-positions. This process involves th jim click hyundai auto mall tucson azWebTrifluoromethane is a colorless nonflammable gas. It is shipped as a liquid under pressure. It may be narcotic in high concentrations. Under prolonged exposure to fire or heat the … install maytag dishwasher door handleWebTriflic acid, the short name for trifluoromethanesulfonic acid, TFMS, TFSA, HOTf or TfOH, is a sulfonic acid with the chemical formula CF 3 SO 3 H. It is one of the strongest known acids.Triflic acid is mainly used in research as a catalyst for esterification. It is a hygroscopic, colorless, slightly viscous liquid and is soluble in polar solvents. jim click hyundai dealershipWebQuantity Value Units Method Reference Comment; Δ r H°: 76. ± 15. kJ/mol: IMRE: Larson and McMahon, 1987: gas phase; B,M Quantity Value Units Method Reference Comment; Δ r S°: 104. install maytag 24 in dishwasherWebSodium trifluoromethanesulfonate (Sodium triflate or NaOTf) is an efficient catalyst as well as a reagent in many organic reactions. The prominent application includes catalytic … jim click hyundai 22nd street tucsonWebApr 23, 2024 · The trifluoromethyl group plays an increasingly important role in pharmaceuticals, agrochemicals and materials. This tutorial describes recent advances in … jim click hyundai east partsWebFeb 7, 2024 · Industrial designation Chemical name (common name) Chemical formula Global warming potential; HFC-23: trifluoromethane (fluoroform) CHF 3: 14,800: HFC-32: … jim click hyundai eastside parts