<Abstract of published report>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.
スポンサーリンク
概要
著者
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Iwama Tetsuo
Gifu Pharmaceutical University
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Iwamura T
Gifu Pharmaceutical Univ. Gifu Jpn
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Matsumoto H
Yamanouchi Pharmaceutical Co. Ltd. Ibaraki Jpn
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Hori M
Gifu Pharmaceutical Univ. Gifu Jpn
関連論文
- Synthesis and Reactions of 10-Chloro-10,9-(epoxyalkano)selenoxanthenes and 1-Chloro-1-phenyl-3H-2,1-benzoxaselenoles.
- Synthesis of 2,6-Epithio-3-benzazocine Derivatives.
- Synthesis and Analgestic Activity of Novel Heterocycles, [1]Benzothiopyrano[3,4-b]pyrrole Derivatives.
- Reactions of 1H-2-Benzothiopyran 2-Oxides with Active Methylene Compounds : A Novel Ring Contraction of 1-Aryl Derivatives to Benzo-[c]thiophenes. : X-Ray Molecular Structure of 1-(2,2-Diacetylvinyl)-3-phenylbenzo[c]thiophene.
- Synthesis of a New Skeleton, 2,6-Epithio-3-benzazocine.
- An Unexpected Double Cycloaddition of[1,2,4]Triazolo[1,5-a]pyrimidine N-Ylide with Activated Acetylenes and Alkenes.
- Novel Addition Products of 2-Aza-1-thiabenzene Derivatives with Methyl Propiolate.
- Ylide-induced Ylide Formation : A Novel Double Cycloaddition Reaction of a [1,2,4]Triazolo[1,5-a]pyrimidinium Ylide.
- Ylide-induced Ylide Formation : A Thermal Reaction and a Double Cyclo-addition Reaction of [1,2,4]Triazolo[1,5-a]pyridinium Ylides.
- Synthesis and Properties of Novel Medium-Sized Heterocyclic Compounds Containing Two Sulfur Atoms in the ring and Synthetic Approaches to Conjugated Cyclic Disulfonium Ylides.
- Synthesis and Thermal Transformation of Stable Monocyclic λ^4-Thiabenzenes.
- 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.
- Reactivities of 1-Alkylthiabenzenes.
- 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 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
- Amino Acids and Peptides. XXXIX. Synthesis of iNoc-Gln-Val-Val-Ala-Ala-pNA and Its Action on Thiol Proteinases
- 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.
- Synthesis and Properties of a Novel Cyclic Sulfilimines, 2-Methyl-2,4,1-benzodithiazin-2-ium-1-ide.
- Ring Transformation of the Adducts of the Polar Cycloadditions of 2-Benzothiopyrylium Salts.
- Polar Cycloaddition of 2-Benzothiopyrylium Salts with Conjugated Dienes.
- Reactions of 9-Substituted 9-Thia-10-azaphenanthrenes with Electrophiles.
- 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.
- Reactions of 9-Phenylthioxanthene 10-Oxide with Organometallic Reagents.
- Novel Rearrangements of Cyano-stabilised Cyclic Sulfur Ylides, 2-Alkyl-1-cyano-3,4-dihydro-1H-2-thionianaphthalen-1-ides : Spiro-compound Formation and Ring Expansion Reactions.
- Versatile Cyclisation Reactions Using Selenoboranes.
- Novel Oxidative Ring Contraction of Dihydroselenopyrans to Selenophenes.
- Syntheses and Thermal Behaviour of 9-Substiuted 9-Thia-10-azaphenanthrenes.
- Reactions of Azathiabenzene Anion with Electrophiles. Formation and X-Ray Analysis of Novel Heterocyclic Compounds from the Reaction with Carboxylic Esters.
- Reactions of Xanthinium N(7)-Ylides with Olefinic Dipolarophiles.
- Generation and Properties of N^7-Xanthinium Ylides : Reactions of N^7-Xanthinium Ylides with Diphenylecyclopropenone and Acetylenic Compounds.
- 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
- Synthesis and Thermal Reaction of Cyano-Stabilized Cyclic Sulfur Ylides, 2-Alkyl-1-cyano-3,4-dihydro-1H-2-thionianaphthalen-1-ides.
- Ring Contraction of 2-Chlorocyclolhexanone with Grignard Reagents.
- A Novel Histamine 2(H_2) Receptor Antagonist with Gastroprotective Activity. II. Synthesis and Pharmacological Evaluation of 2-Furfuryl-thio and 2-Furfurylsulfinyl Acetamide Derivatives with Heteroaromatic Rings
- A Novel Histamine 2(H_2) Receptor Antagonist with Gastroprotective Activity. I. Synthesis and Pharmacological Evaluation of N-Phenoxypropylacetamide Derivatives with Thioether Function
- 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
- 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.
- 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.
- A New Method for Radical Generation : Reductive C-Se or C-S Bond Cleavage of Cyclic Onium Salts.
- 10-Thia-anthracenes. Part 3. : A Re-examination of the Reaction of 9-Phenylthioxanthylium Salt and Phenyl-lithium.
- 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
- A BIOCHEMICAL APPROACH TO THE IMMEDIATE ALLERGIC PHENOMENA AND ITS APPLICATION FOR CREATING NOVEL ANTIALLERGIC AGENTS
- 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.
- STUDIES ON METHODOLOGY OF FINDING THE ANTI-ALLERGIC AGENT WITH THE GUIDANCE OF ANTI-HYALURONIDASE ACTIVITY
- Synthesis and Reactions of 1-Thianaphthalenes.
- Stereospecific C-N Bond Cleavage of 4-Silylated 1,2-Thiazetidine 1,1-Dioxides with EtAlCl_2 or AlCl_3 : Formation of (E)-Vinylsulfonamides
- Facil Synthesis of 8-Benzoylthio-2,6-methano-3-benzazocines and 3-Benzoylthiomorphinans Having Small-Ring Substituents.
- Novel Nonnarcotic Analgesics with and Improved Therapeutic Ratio. Structure-Activity Relationships of 8-(Methylthio)-and 8-(acylthio)-1,2,3,4,5,6-hexahydr0-2,6-methano-3-benzazocines
- Thermal Rearrangement of 9-Benzyl-10-aza-9-thiaphenanthrenes.
- Synthesis of New Cyclic Sulfur Ylides 9-Alkyl-10-cyano-9-thiaphenanthrenes and Their Novel Addition Reactions with Acetylenic Electrophiles.
- Opioid Receptor Affinities of Tyrosine ω-Phenylalkyl Esters, Simple Enkephalin Pharmacophore-mimics.
- First Isolation of Monocyclic Thiabenzenes.
- Stable 2-Thianaphthalenes : Synthesis and Reactions with Electrophiles.
- Synthesis and Analgetic Activity of Sulfur-Containing Morphinans and Related Compounds.
- 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.
- 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)