Rapid assembly of polycyclic structures via sigmatropic rearrangement of s-propargyl xanthates [PDF]
International audienceUpon heating in chlorobenzene, propargyl xanthates yield the corresponding 4,5-bis(alkylidene)-1,3-dithiolan-2-ones which are trapped by unactivated olefins in an intramolecular Diels-Alder cycloaddition yielding interesting ...
Harrington, Ryan M.+2 more
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Breaking Down Barriers: The Liaison Between Sigmatropic Shifts, Electrocyclic Reactions, and Three‐Center Cations [PDF]
Roald Hoffmann, Dean J. Tantillo
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Protonation of ferrocene in the gas phase [PDF]
Hydrogen-deuterium exchange, proton and deuteron transfer, and collision-induced dissociation experiments involving protonated ferrocene, [Fe(c-C5H5)2]H+, and isotopically labeled analogues have been carried out using a Fourier transform ion cyclotron ...
Hop, C.E.C.A., McMahon, T.B.
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Vanadium-catalyzed selenide oxidation with in situ [2,3] sigmatropic rearrangement (SOS reaction): scope and asymmetric applications [PDF]
T. Campbell Bourland+2 more
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Base-Catalyzed Rearrangement of Some 1,3-Oxathiolane Sulfoxides: Mechanistic Viewpoint of the Sigmatropic and Elimination Reactions [PDF]
Hoh Gyu Hahn+2 more
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[3,3]-Sigmatropic Rearrangement/5-exo-digCyclization Reactions of Benzyl Alkynyl Ethers: Synthesis of Substituted 2-Indanones and Indenes [PDF]
Armen A. Tudjarian, Thomas G. Minehan
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Thermal Reactions of 8‐Methylbicyclo[4.2.0]oct‐2‐enes: Competitive Diradical‐Mediated [1,3] Sigmatropic, Stereomutation, and Fragmentation Processes. [PDF]
Xavier Bogle+3 more
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Tandem Pseudopericyclic Reactions: [1,5]‐X Sigmatropic Shift/6π‐Electrocyclic Ring Closure Converting N‐(2‐X‐Carbonyl)phenyl Ketenimines into 2‐X‐Quinolin‐4(3H)‐ones. [PDF]
Mateo Alajarı́n+3 more
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Novel Synthesis and Structures of Tris-Annelated Benzene Donors for the Electron-Density Elucidation of the Classical Mills−Nixon Effect [PDF]
A versatile method for the high-yield synthesis of various tris-, bis-, and mono-annelated benzenes (as well as cyclooctatetraene) is based on the Pd-catalyzed coupling of three (or four) ethylenic units comprised of α,β-dibromoalkenes and α‘-alkenyl ...
Kochi, Jay K.+3 more
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