<Abstract of published report>Novel Oxidative Ring Contraction of Dihydroselenopyrans to Selenophenes.

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概要

• 論文の詳細を見る
• 岐阜薬科大学の論文
• 1994-06-30

著者

• Iwama Tetsuo

  Gifu Pharmaceutical University

• YOSHIMATSU Mitsuhiro

  Department of Chemistry, Faculty of Education, Gifu University

• Iwamura T

  Gifu Pharmaceutical Univ. Gifu Jpn

• Yoshimatsu Mitsuhiro

  Dep. Of Chemistry Fac. Of Education Gifu Univ.

• Yoshimatsu M

  Dep. Of Chemistry Fac. Of Education Gifu Univ.

関連論文

• Dimethyl Sulfide-Boron Trihalide-Mediated Reactions of α, β-Unsaturated Ketones with Aldehydes : One-pot Synthesis of Baylis Hillman Adducts and α-Halomethyl Enones
• Synthesis and Structure of 1-Methyl-2,6-bis(electron-withdrawing group)-Substituted Selenabenzenes.
• Synthesis and Reactivity of β-Sulfonylvinylselenonium Salts : a Simple Stereoselective Synthesis of β-Functionalized (Z)-Vinyl Sulfones.
• Novel Ring Transformation of Dihydroselenines to Selenabicyclo[3.1.0]hexenes.
• Syntheses and Reactions of Cyclic Se-Alkoxy-Se-chloreselenuranes and Alkoxyselenonium Salts.
• Self-assisted Tandem Michael-aldol Reactions of α, β-Unsaturated Ketones with Aldehydesl.
• Reexamination of Products and the Reaction Mechanism of the Chalcogeno-Baylis-Hillman Reaction : Chalcogenide-TiCl_4-mediated Reactions of Electron-deficient Alkenes with Aldehydes.
• The First Aryne Evolution from the Reactions of Selenonium Salts with Aryllithiums.
• Chalcogenide-TiCl_4-mediated Reactions of S-Ethyl Thioacrylate with Aldehydes.
• A Novel Stereoselective Preparation of Various Vinyl Sulfide Derivatives Using β-Alkylthioalkenylselenonium Salts.
• Structure and Reaction of 2,6-Bis(alkoxycarbonyl)-1-methyl-2H-and 4H-Selenopyranium Tetrafluoroborates.
• A Convenient Synthesis of α-Halomethylene Adols or β-Halo-α-(hydroxyalkyl)acrylates Using the Chalcogeno-Baylis-Hillman Reaction. Α
• 2,6-Diphenyl-4H-chalcogenopyran-4-ones and 2,6-Diphenyl-4H-chalcogenopran-4-thiones : A New Catalyst for the Baylis-Hillman Reaction.
• First Isolation of Selenabenzenes Stabilized by Two Electron-withdrawing Groups at the 2- and 6-Positions.
• Reactions of 1,2-Thiazetidine 1,1-Dioxides with Organometallics : β-Elimination and N-S Bond Cleavage.
• A Novel Push-Pull Diels-Alder Diene : Reactions of 4-Alkoxy- or 4-Phenylsulfenyl-5-chalcogene-substituted 1-Phenylpenta-2,4-dien-1-one with Electron-Deficient Dienophiles
• Reactions of Diphenyl(phenylethynyl)selenonium Salts with Active Methylene Compounds and Amides : First Isolation of Oxyselenuranes[10-Se-4(C30)]as a Reaction Intermediate
• A New Synthesis of α-Amino Acid Thioesters by Pummerer Reaction of 3-Substituted-4-sulfinyl-β-sultams.
• The Pummerer Reaction of 2-Vinylcyclopropyl Sulfoxides : Generation and Reaction of Butadienylthionium Ion Intermediates.
• Reactions of a β-Sultam Ring with Lewis Acids via the C-S Bond Cleavage.
• Synthesis and Reactions of Lactam Sulfonium Salts with a Sulfonio Bridgehead. II. 1,1a, 4,5,6-Pentahydro-6-oxo-2H-thiopyrano[1,6-d]-4,1-benzothiazepinium Perchlorates.
• Synthesis and Reactions of Lactam Sulfonium Salts with a Sulfonio Bridgehead. I. 1,4,4a-Trihydro-5-oxo-2H-thiopyrano[1,6-a]-1,4-benzothiazinium Perchlorates.
• Synthesis and Reactions of Lactam Sulfonium Salts with a Sulfonio Bridgehead. II. 1,1a, 4,5,6-Pentahydro-6-oxo-2H-thiopyrano[1,6-d]-4,1-benzothiazepinium Perchlorates
• Reactions of Thiazolo[3,2-b]-1,2,4-triazolium N-Ylides with Electron-deficient Acetylenes : Novel Benzoyl Migration of Intermediary 1 : 1-Adducts and Michael Addition to the Acetylenes.
• Reactions of Alkynylselenonium Salts with Sodium Benzenesulfinate.
• Reinvestigation of Reactions of Thiazolium and Benzothiazolium N-Phenacylides with Electron-deficient Acetylenes.
• Novel Benzoyl Migration of the Intermidiary 1 : 1 Adducts of 1,3-Dipolar Cycloaddition of Thiazolo [3,2-b][1,2,4]triazolium N-Phenacylides with Dimethyl Acetylenedicarboxylate.
• Synthesis of 6- or 8-Carbon-Substituted 2-Oxopurines.
• Generation of Selenabenzenes Bearing an Electron-Withdrawing Group at the 2-Position.
• Versatile Cyclisation Reactions Using Selenoboranes.
• Novel Oxidative Ring Contraction of Dihydroselenopyrans to Selenophenes.
• The Enantioselective Chalcogeno-Baylis-Hillman Reaction Using a Chiral Hydroxy Chalcogenide-TiCl_4 Complex.
• The Chalcogeno-Baylis-Hillman Reaction of α, β-Unsaturated Thioester : A New Approach to α-Methylene-β-hydroxy Carboxylic Acid Derivatives.
• A New Entry to Enantioselective Synthesis of α-Methylene-β-hydroxy Ketones by the Chalcogeno-Baylis-Hillman Reaction.
• Structure and Reaction of 2,6-Bis(alkoxycarbonyl)-1-methyl-2H- and 4H-Selenopyranium Tetrafluoroborates
• A New Entry to Enantioselective Synthesis of α-Nethylene-β-hydroxy Ketones by the Chalcogeno-Baylis-Hillman Reaciton
• Z-Selective or Stereospecific Alkenylation Reaction : A Novel Synthetic Method for α-Fluoro-α, β-unsaturated Esters
• Ring Contraction of 2-Chlorocyclolhexanone with Grignard Reagents.
• The Chalcogeno-Baylis-Hillman Reaction : The First Examples Catalyzed by Chalcogenides in the Presence of Lewis Acids.
• The Enantioselective Chalcogeno - Baylis - Hillman Reaction Using a Chiral Hydroxy Chalcogenide - TiCl_4 Complex
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• Photochemical[3+2]Cycloaddition of 2'-Vinyl-2H-1,4-benzothiazine-3(4H)-one-2-spirocyclopropanes Catalyzed by Diphenyl Dichalcogenides.
• Conformational Effects on Photochemical Thiylation of 2'-Vinyl-2H-benzothiazine-2-spirocyclopropan-3(4H)-ones.
• Chemical Behavior of 2'-Vinyl-2H-benzothiazine-2-spirocyclopropan-3(4H)-ones in Acidic Media.
• A Convenient Synthesis of Alkynylpyrazoles.
• Acid-promoted Isomerisation of 1-Acceptor-1-sulfenyl-substituted 2-Vinylcyclopropanes with C_1-C_2 Bond Fission and Novel 1,5-Sulfenyl rearrangement.
• Photochemical [3+2] Cycloaddition of 2'-Vinyl-2H-1,4-benzothiazin-3(4H)-one-2-spirocyclopropanes Catalyzed by Diphenyl Dichalcogenides
• Conformational Effects on Photochemical Thiylation of 2'-Vinyl-2H-benzothiazine-2-spirocyclopropan-3(4H)-ones
• Chemical Behavior of 2'-Vinyl-2H-benzothiazine-2-spirocyclopropan-3(4H)-ones in Acidic Media
• Acid-promoted C_1-C_2 Bond Fission and Subsequent 1,5-Sulfeny Shift of 1-Acceptor-1-sulfenyl-substituted 2-Vinylcyclopropanes. : Formation of 6-Sulfenyl-α, β-γ, δ-unsaturated Carboxylic Esters and Nitriles
• Opioid Receptor Interaction and Adenylyl Cyclase Inhibition of Dihydroetorphine : Direct Comparison with Etorphine
• Generation and Reactions of Butadienylthionium Ions from 2-Vinylcyclopropyl Sulfoxides under Pummerer Conditions
• New Transformation of Lactam Sulfides to Tetrahydro-3,6-epithiobenzazocines via Bicyclic Sulfonium Salts with a Sulfonio Bridgehead.
• The Chalcogeno-Baylis-Hillman Reaction : A New Preparation of Allylic Alcohols from Aldehydes and Electron-deficient Alkenes.
• Acid-promoted C_1-C_2 Bond Fission and Subsequent 1,5-Sulfenyl Shift of 1-Acceptor-1-sulfenyl-substituted 2-Vinylcyclopropanes. Formation of 6-Sulfenyl-α,β-γ,δ-unsaturated Carboxylic Esters and Nitriles
• 1,7-Acetal Carbon Rearrangement via 1,5-Hydride Transfer in an Oxocanyl Carbenium Ion. Conversion of O-(Hexenyl)-Se, O-heteroacetals of O, O-Acetals into 7-Oxohexanols or 7-Oxohexyl Chlorides 1
• Endo Selective Cyclization of Selenonium Ion Intermediate : Efficient Formation of 1-Halo-3-selenocyclohexanes.
• Synthesis and Reactions of a Stable 2-Selenanaphthalene, 1-Cyano-2-methyl-2-selenanaphthalene.
• The C-O Bond Cleavage of Cyclic Ethers with Tris(phenylseleno)-borane-Lewis Acid.
• Novel Reaction of a Stable Selenanaphthalene, 1-Cyano-2-methyl-2-selenanaphthalene with Electrophiles.
• Vinyl Radical Generation with Selenoborane and Its Application to Cyclization Reaction of Enynes.
• Stereospecific C-N Bond Cleavage of 4-Silylated 1,2-Thiazetidine 1,1-Dioxides with EtAlCl_2 or AlCl_3 : Formation of (E)-Vinylsulfonamides
• Stereospecific Syntheses of 5-Alkyl-3-ethoxy-2-[(phenylchalcogeno)methylene]tetrahydrofurans.
• Facil Synthesis of 8-Benzoylthio-2,6-methano-3-benzazocines and 3-Benzoylthiomorphinans Having Small-Ring Substituents.
• A Study on the Electronic Effect of Reactions of π-Allylpalladiums Using 2-Arylsulfonyloxy-3-chloropropenes with Ethyl Malonate and Their Synthetic Utilization
• Novel Construction of 5-Methylenepyrrol-2-ones by Intramolecular Cyclization of Selenium-Stabilized Alkynyl Amides.
• Opioid Receptor Affinities of Tyrosine ω-Phenylalkyl Esters, Simple Enkephalin Pharmacophore-mimics.
• 1-(Organoselanyl)perfluoroalkanols : A Stable and Efficient Precursor for Organoselenols
• Synthesis and Analgetic Activity of Sulfur-Containing Morphinans and Related Compounds.
• A Novel Synthesis of (Z)-Enynes and (Z)-Enediynes from Prop-2-ynyl Alchohols.
• Synthesis of Medium-sized Cyclic Sulfides and Selenides by Crosspiece C-X Bond Cleavage of Bicyclic Onium Salts bearing a Bridgehead Sulfur or Selenium Atom.
• 1,7-Acetal Carbon Rearrangement via 1,5-Hydride Transfer in an Oxocanyl Carbenium Ion. : Conversion of O-(5-Hexenyl)-Se, O-heteroacetals or O, O-Acetals into 7-Oxohoptanols or 7-Oxoheptyl Chlorides.
• Reduction of Sulfonium and Selenonium Salts with Samarium Diiodide.
• Synthesis of 1,2,3,4,5,6-Hexahydro-8-hydroxy-2,6-epithio-3-benzazocine.
• Novel Synthesis of Medium-sized Heterocycles Containing a Sulfur or Selenium Atom.
• Synthesis of Some N-Substituted 1,2,3,4,5,6-Hexahydro-2,6-methano-3-benzoazocines (6,7-Benzomorphans)
• A Useful Synthesis of α, β-Bis(methylseleno)alkanes and α, δ-Bis(methylseleno)alk-2-enes by the Reactions of Alkenes and 1,3-Dienes with B(SeMe)_3-Lewis Acid
• A Novel 3,4-Bis(sulfenyl)- or 4-Selenenyl-3-sulfenylpenta-2,4-dienylation of Aldehydes Using 4-Ethoxy-1,2-bis(sulfenyl)- or 1-Selenenyl-2-sulfenyl-buta-1,3-dienyl Lithiums
• Palladium-Catalyzed Terminal Alkyne Coupling Reaction of β-Bromo-β-phenylthio or β-Methylthio-α-trifluoromethyl Enol Ethers : a Convenient Synthesis of 2-Sulfonyl-1-buten-3-ynes
• Meyer-Schuster Rearrangement of γ-Sulfur-substituted Propargyl Alcohols : A Convenient Synthesis of α, β-Unsaturated Thioesters
• Dehydrosulfonylation of Conjugated Enyne Sulfones : Convenient Synthesis of Diyne Compounds
• A Reaction of γ-Chalcogen-substituted Prop-2-ynyl Cations with Mild Nucleophiles.
• A New Method of Generation of α-Selenocarbenium Ions from Se, O-Heteroacetals and Their Reactions.
• Generation and Alkylation of α-Lithio-Se, O-heteroacetals, and Stereoselective Cyclization of Olefinic Se, O-Heteroacetals.
• A Useful Synthetic Method for α-Cyano Selenides.
• A New Synthesis of Trimethylsilyl-Substituted Enyne and (Z)-Enediyne Compounds

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