Katsuki et al. Octafluorodibenzofuran 130 is prepared by the reaction of perfluorinated dicyclohexyl ethers with benzophenone radical anion <1998JCS(P1)637> (Equation (76)). Some enol ethers are prepared from saturated ethers by elimination reactions. Bulletin of the Chemical Society of Japan. The acid-catalyzed addition of hydrogen peroxide to vinyl ethers gives the hydroperoxide:[4], Although enol ethers can be considered the ether of the corresponding enolates, they are not prepared by alkylation of enolates. In comparison with simple alkenes, enol ethers exhibit enhanced susceptibility to attack by electrophiles such as Bronsted acids. This transformation thus offers an easy access to the variety of aryl-substituted amines 49 <2005OL4685>. [1] The general structure is R2C=CR-OR where R = H, alkyl or aryl. Nigel D. A. Walshe, Graham B. T. Goodwin, Graham C. Smith, Frank E. Woodward. Bicyclic hydropyrans and spiroethers are obtained from palladium-catalyzed intramolecular, 1,4-dialkoxylation of 1-ω-alkoxycyclohexa-1,3-dienes <1998TL1223> (Equation (73)). On the mechanism of diels-alder reactions of nitroso alkenes:exo/endo selectivity, stereospecificity,E/Z selectivity, and relative reactivity of various olefins. 2-Indanone and its enol. Configuration-dependent Stereochemistry in 2,4-Dichloro-3-pentanone-Its Enol Trimethylsilyl Ether Interconversion. Some enol ethers are prepared from saturated ethers by elimination reactions. The survival of -butyldimethylsilyl group of silyl enol ethers in the reaction with dimethyl(methylene)ammonium iodide. The reactivity of enol ethers is highly dependent on the presence of substituents alpha to oxygen. The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Rather than a [3 + 4]-cycloaddition, the process is actually a cyclopropanation-Cope rearrangement process (Scheme 45). Kinetics of the reactions of electron rich CC-double bonded systems with carbenium ions. They are mainly of academic interest, e.g. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Enol ethers bearing α substituents do not polymerize readily. [3] Some vinyl ethers also find some use as inhalation anesthetics. This reaction has also been applied to the asymmetric oxidation of cyclic ketene acetals to give an α-hydroxy lactone.140, C.K.-F. Chiu, ... Z.B. (Diacetoxy)iodobenzene reacts with 3-phenyl-propan-1-ol under photolysis, to give dihydrobenzopyrans in acceptable yield, via alkoxy radicals <1996TL2441>. Find more information about Crossref citation counts. https://doi.org/10.1016/S0022-328X(03)00470-4, https://doi.org/10.1002/0471264180.os065.01, https://doi.org/10.1002/(SICI)1521-3757(19991018)111:20<3244::AID-ANGE3244>3.0.CO;2-9, https://doi.org/10.1016/S0040-4039(00)79164-7, https://doi.org/10.1016/S0957-4166(00)82229-6, https://doi.org/10.1016/0304-4165(86)90023-1, https://doi.org/10.1016/S0040-4039(01)91296-1, https://doi.org/10.1007/978-1-4615-7410-1_3. An enantioselective protonation reaction of silyl enol ethers of ketones in the presence of a cationic gold (I) disphosphine complex as chiral Brønsted acid and of alcoholic solvent gave optically active cyclic and acyclic ketones in excellent yields and high enantioselectivities. The reaction can be used to prepare flavonoid and vitamin E analogs (Equation (77)).


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