Results 111 to 120 of about 12,040 (158)
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Preparations and reactions of acylated and partially acylated glycosyl fluorides
Carbohydrate Research, 1993Abstract Partial acylation of glycosyl fluorides in the galacto (2 and 3) and gluco series (8–10) is readily achieved. Attempts to further alkylate these acyl derivatives failed. Treatment of 2 with Lewis acid, however, provided a facile route to the 1,4-anhydro derivative 5 . Lewis acid-mediated glycosylation of 2-acetamido-3,4,6-tri- O -
Joachim Thiem, Matthias Wiesner
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Acyl Fluorides in Late‐Transition‐Metal Catalysis
Angewandte Chemie International Edition, 2019AbstractIn this Review, we summarize the current state of the art in late‐transition‐metal‐catalyzed reactions of acyl fluorides, covering both their synthesis and further transformations. In organic reactions, the relationship between stability and reactivity of the starting substrates is usually characterized by a trade‐off.
Yohei Ogiwara, Norio Sakai
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Enantioselective acyl-transfer catalysis by fluoride ions
Chemical Communications, 2018The asymmetric nucleophilic catalysis by fluoride ions at a carbon-based electrophile has been demonstrated for the first time.
Ryan Craig +3 more
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Copper‐Catalyzed Asymmetric Acylboration of 1,3‐Butadienylboronate with Acyl Fluorides
Angewandte Chemie International Edition, 2023AbstractWe report herein a Cu‐catalyzed regio‐, diastereo‐ and enantioselective acylboration of 1,3‐butadienylboronate with acyl fluorides. Under the developed conditions, the reactions provide (Z)‐β,γ‐unsaturated ketones bearing an α‐tertiary stereocenter with high Z‐selectivity and excellent enantioselectivities.
Shang Gao +3 more
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Nickel/copper-cocatalyzed decarbonylative silylation of acyl fluorides
Chemical Communications, 2019A transformation of acyl fluorides with silylboronvianickel/copper-cocatalysed carbon–fluorine bond cleavage and a sequential decarbonylation, which provides an efficient protocol to functionalize arylsilanes, has been disclosed.
Xiu Wang +2 more
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C&EN Global Enterprise, 2017
Tetramethylammonium trifluoromethylthiolate, [N(CH3)4]SCF3, is a mouthful to say, but the inexpensive, bench-stable, and easy-to-use salt has been impressing chemists over the past few years for its versatility in adding SCF3 groups to molecules and as a fluorinating reagent.
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Tetramethylammonium trifluoromethylthiolate, [N(CH3)4]SCF3, is a mouthful to say, but the inexpensive, bench-stable, and easy-to-use salt has been impressing chemists over the past few years for its versatility in adding SCF3 groups to molecules and as a fluorinating reagent.
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The influence of surfactants on acylation in anhydrous hydrogen fluoride
Journal of Fluorine Chemistry, 1992Abstract We investigated the acylation reaction of aromatic compounds with anhydrides, acids and acid halides in the presence of anhydrous hydrofluoric acid (AHF) and anhydrous hydrofluoric acid/surfactant mixtures as catalysts. Simons et al. [Simons et al., J. Am. Chem.
J. Höcker, U. Menyes, U. Roth
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Organometallics, 2020
This report describes the formation of value-added acyl fluorides by means of palladium-catalyzed acyl-exchange reactions between acyl fluorides and acid anhydrides.
Yohei Ogiwara +2 more
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This report describes the formation of value-added acyl fluorides by means of palladium-catalyzed acyl-exchange reactions between acyl fluorides and acid anhydrides.
Yohei Ogiwara +2 more
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1.1 Sulfonyl Fluorides and Acyl Fluorides
AbstractSulfonyl fluorides have numerous applications in both synthetic organic chemistry as fluorinating agents and as precursors to sulfur(VI) moieties, and in chemical biology as covalent inhibitors and chemical probes. The utility of sulfonyl fluorides arises from the properties of the S—F bond, as the high bond strength and polarization imparts ...J. Lai, B. J. Thomson, G. M. Sammis
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A new method for eliminating carbonyl fluoride from α-trifluoromethylated acyl fluorides
Journal of Fluorine Chemistry, 1982Abstract Carbonyl fluoride was found to be eliminated from α-trifluoromethylated acyl fluorides when they are treated with amides, e g. , dimethylformamide, dimethylacetamide, and dimethylthioamide, under mild condition, e.g. , Possible reaction mechanism will be discussed.
Yohnosuke Ohsaka +2 more
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