Restricted rotation involving the tetrahedral carbon. XXXIX. 9-(2-Methoxy-1-methylethyl)triptycene derivatives.
スポンサーリンク
概要
- 論文の詳細を見る
9-(2-Methoxy-1-methylethyl)triptycenes were prepared from 9-(2-methoxy-1-methylethyl)anthracene and corresponding benzynes to examine the feasibility of isolating rotational isomers of 9-isopropyltriptycene derivatives at room temperature. They afforded crystalline <I>ap</I> forms which underwent internal rotation with activation energies of <I>ca.</I> 23 kcal/mol. 9-(2-Acetoxy-1-methylethyl)-1,2,3,4-tetrachlorotriptycene gave similar results. Based on the results, the barrier to rotation of 9-isopropyl-1,2,3,4-tetrabromotriptycene was reexamined to show that it must be corrected as 23.5 kcal/mol at 175 °C.
- 公益社団法人 日本化学会の論文
著者
-
Yamamoto Gaku
Department Of Chemistry Faculty Of Science The University Of Tokyo
-
Kikuchi Hiromi
Department Of Applied Chemistry Graduate School Of Engineering Tohoku University
-
Oki Michinori
Department Of Chemistry Faculty Of Science Okawama University Of Science
-
Suzuki Masahiko
Department Of Applied Chemistry Faculty Of Science Science University Of Tokyo
-
Suzuki Masahiko
Department of Chemistry, Faculty of Science, The University of Tokyo
関連論文
- Ferromagnetism in Co-Doped TiO_2 Rutile Thin Films Grown by Laser Molecular Beam Epitaxy
- Sb添加ダイヤモンド膜の電気的特性
- Synthesis and Properties of Methano-Bridged Bisdehydro[17]-, -[19]-, -[21]- annulenones and the Related Compounds
- Synthesis and Properties of a Bismethano-bridged Bisdehydro[21]annulenone. Conformation in Solution and in the Crystalline State
- A Methano-Bridged Dehydro[24]annulenedione. A Highly Diatropic Dicationic 22π-Electron Species in D_2SO_4
- X-Ray Photoelectron Spectroscopy Study of Hetero-Interface between Manganese Pnictide and Mn-Zn Ferrite
- Epitaxial Growth of InAs on Single-Crystalline Mn-Zn Ferrite Substrates
- Molecular Dynamics and Quantum Chemical Molecular Dynamics Approach to Design of MgO Protecting Layer in Plasma Display
- Theoretical Design of MgO Protecting Layer in Plasma Display by New Kinetic Monte Carlo Simulator
- In Situ Optical Diagnosis of Pulsed Laser Deposition and Oxidation of YBa_2Cu_3O_ Thin Films
- Dark and Photoconductivity Behaviors of Amorphous and Crystalline C_ Films
- Thermodynamic Estimation of Oxidation Ability of Various Gases Used for the Preparation of Superconducting Films at High Vacuum
- Preparation of Y-Cu-O/Ba-Co-O Multilayered Thin Films and Thermal Diffusion Behavior of the Interface
- Heteroepitaxial Growth of CeO_2 (001) Films on Si(001) Substrates by Pulsed Laser Depostion in Ultrahigh Vacuum
- Photo Chemical Vapor Deposition of Metal Oxide Films Relating to Bi-Sr-Ca-Cu-O Superconductor
- Photochemical Identification of a Possible Adsorbed Pentacene Molecule on the SrTiO_3(001)
- Preparation of Atomically Smooth TiO_2 Single Crystal Surfaces and Their Photochemical Property
- Quantitative Conductivity Mapping of SrTiO_3-LaAlO_3-LaTiO_3 Ternary Composition-Spread Thin Film by Scanning Microwave Microscope
- Local Magnetic Properties of Underdoped La_Sr_χ CuO_4 Single Crystal Probed by Scanning Superconducting Quantum Interference Device Microscopy : Superconductors
- Preparation and Nanoscale Characterization of Highly Stable YBa_2Cu_3O_ Thin Films
- Fabrication of High-Quality Perovskite Oxide Films by Lateral Epitaxy Verified with RHEED Oscillation
- Two-Dimensional Epitaxial Growth of SrTiO_3 Films on Carbon-Free Clean Surface of Nb-Doped SrTiO_3 Substrate by Laser Molecular Beam Epitaxy
- Hetero-Epitaxial Growth of ZnO Film by Temperature-Modulated Metalorganic Chemical Vapor Deposition
- Molecular layer-by-layer growth of C-60 thin films by continuous-wave infrared laser deposition
- X-Ray Magnetic Circular Dichroism and Structural Model for Co-Doped TiO_2 (Anatase) Thin Film (Condensed Matter : Structure, Mechanical and Thermal Properties)
- Temperature Dependence of Absorption Spectra in Anatase TiO_2 Epilayers
- Temperature Dependence of Absorption Spectra in Anatase TiO_2 Epilayers
- Combinatorial Laser Molecular Beam Epitaxy (MBE) Growth of Mg-Zn-O Alloy for Band Gap Engineering
- Reactivities of Stable Rotamers. XLIII. Diazotization of 2-Methyl-2-(1,2,3,4-tetrachloro- and 1,4-dimethoxy-9-triptycyl)propylamine Rotamers^
- Reactivities of Stable Rotamers. XXXV. Diazotization of 2-(1,4-Dimethyl-9-triptycyl)-2-methyl-Propylamine Rotamers
- Growth and Characterization of Ferroelectric Pb(Zr, Ti)O_3 Films on Interface-Controlled CeO_2(111)/Si(111) Structures
- Pulsed Laser Deposition of Epitaxial Ferroelectric Pb(Zr, Ti)O_3 Films on Si(100) Substrate
- Formation and Characterization of Epitaxial TiO_2 and BaTiO_3/TiO_2 Films on Si Substrate
- Epitaxial Growth of Highly Crystalline and Conductive Nitride Films by Pulsed Laser Deposition
- Single Grain and Single Grain Boundary Resistance of Pentacene Thin Film Characterized by Nano-scale Electrode Array
- Fabrication of Highly Oriented Rubrene Thin Films by the Use of Atomically Finished Substrate and Pentacene Buffer Layer
- Analysis of Time-Resolved Donor-Acceptor Photoluminescence of N-Doped ZnO
- Photo-Irresponsive Thin-Film Transistor with Mg_xZn_O Channel
- Metallic LaTiO_3 / SrTiO_3 Superlattice Films on the SrTiO_3(100) Surface
- Magnetic Properties of Strain-Controlled SrRuO_3 Thin Films
- Combinatorial Synthesis of Transition Metal Oxide Superlattices (特集:表面科学研究のコンビナトリアルケミストリー)
- Magnetic and Transport Properties of Mn-Based Fractional-Layer Oxide Superlattices
- Rapid Synthesis and Scanning Probe Analysis of Ba_xSr_TiO_3 Composition Spread Films on a Temperature Gradient Si(100) Substrate : Electrical Properties of Condensed Matter
- Effects of Molecular Association in the Radical-Cations of 1,8-Bis (ethylenedithiotetrathiafulvalenyl) naphthalene^1
- Periodic Boundary Quantum Chemical Study on ZnO Ultra-Violet Laser Emitting Materials
- Periodic Boundary Quantum Chemical Study on ZnO Ultra-Violet Laser Emitting Materials
- Epitaxial Growth of the Wurtzite (112^^-0) AlN Thin Films on Si(100) with MnS Buffer Layer : Semiconductors
- Atomistic Crystal Growth Process of Metal Oxide Electronics Materials : Theoretical Simulation Studies
- Direct Observation of Helical Polysilane Nanostructures by Atomic Force Microscopy
- Room-Temperature Epitaxial Growth of CeO_2 Thin Films on Si(111) Substrates for Fabrication of Sharp Oxide/Silicon Interface
- Synthesis, Structure, and Reactions of the First Stable Aromatic S-Nitrosothiol Bearing a Novel Dendrimer-Type Steric Protection Group
- Fabrication of Planar Nano-gap Electrodes for Single Molecule Evaluation
- Static and Dynamic Stereochemistry of Tris(9-triptycyl)stannane Derivatives
- Dynamic Stereochemistry of Alkyltris(9-triptycyl)stannanes
- Deamination of 1-Alkyl-9-aminomethyltriptycenes : Participation of a Neighboring 1-Alkyl Substituent
- Synthesis and Structures of 9-Triptycylallene Derivatives
- Synthesis and Stereochemistry of N-Phenyl-N-9-triptycylhydroxylamine Derivatives and Related Compounds
- Static and Dynamic Stereochemistry of N-(1,4-Dimethyl-9-triptycyl)-hydroxylamine Derivatives
- Static and Dynamic Stereochemistry of O-Substituted N-9-Triptycylhydroxylamines
- Metal/Diamond/Si 構造ダイオｰドの電気伝導機構 II
- ラット胃・十二指腸液逆流モデルを用いて検討した呼吸器疾患と微量誤嚥との関連性の組織学的検討
- Nickel-Catalyzed Dimerization of [5]Cumulenes (Hexapentaenes)
- Construction and Superfunction of Metal-oxide Nanostructures and Interfaces(Interfaces by various techniques)
- Reactivities of Stable Rotamers. XXXIX. Thermal Decomposition of t-Butyl 3-Methyl-3-(substituted 9-triptycyl)peroxybutanoate Rotamers^
- High animal-fat intake changes the bile-acid composition of bile juice and enhances the development of Barrett's esophagus and esophageal adenocarcinoma in a rat duodenal-contents reflux model
- Bromine Adducts of 9,10-Diheteratriptycene Derivatives
- Static and Dynamic Stereochemistry of N-(9-Triptycyl)acetanilde
- Stereochemistry of N-Ethyl-N-9-triptycylhydroxylamine and Its O-Alkyl Derivatives
- Deamination of 1-Alkyl-9-aminomethyltriptycenes : Participation of the α-C-H Bond of the 1-Alkyl Group
- Structures and Stereodynamics of N-9-Triptycylacetamide and Its N-Alkyl Derivatives
- Dynamic Stereochemistry of N-Phenyl-9-triptycylamine and Its N-Alkyl Derivatives^#
- Structures and Tropicity of Hydrogenation Products of a Bisdehydro[13]annulenone and a Bisdehydro[15]annulenone
- Structure and Stereodynamics of N-Ethyl-N-9-triptycylacetamide: Co-existence of Z- and E-Isomers in a Single Crystal and Pyramidal Amide Nitrogen Both in Crystal and in Solution
- Structure and Stereodynamics of N-Methyl-N-9-triptycylacetamide : Pyramidal Amide Nitrogen in the Crystalline State
- Stereodynamics of N-Phenyl-9-triptycylamine as a Gear-rotation System
- The Synthesis of a [13][15]Fulvalene Derivative
- Static and Dynamic Stereochemistry of N-Alkyl-and N, O-Dialkyl-N-9-triptycylhydroxylamine Derivatives
- A Bromine Adduct of 2, 3, 6, 7, 14, 15-Hexamethyl-9, 10-distibatriptycene. The First Stibonium-Stiborate Zwitterion
- Stereodynamics of N-Benzyl-N-methyl-9-aminotriptycene
- Synthesis and ^1H NMR Spectral Behavior of a Methano[20]annulenedione Derivative
- Syntheses of Novel Cyclic Undecapeptides Related to Gramicidin S with D-Phe-X-Pro Sequences
- Structure and Stereodynamics of N-9-Triptycyl-O-phenylhydroxylamine, an Unusual Product by the Reaction of 9-Nitrosotriptycene and Phenyllithium
- Synthesis and Properties of Trispiro[truxenetris(cycloalkane)]s
- ラット胃・十二指腸液逆流モデルを用いて検討した呼吸器疾患と微量誤嚥との関連性の組織学的検討
- Reactivities of stable rotamers. XXII. Lewis acid-catalyzed reactions of 3-(1,4-disubstituted 9-triptycyl)-3-methylbutanoyl chloride. Isolation of rotameric ketones and competition between cyclizations to substituted and to unsubstituted benzene rings.
- Reactivities of stable rotamers. VI. Manifestation of differential reactivities of the methyls in a t-butyl group in radical halogenations.
- Rotamer populations and molecular structure of 9-isobutyl-1,4-dimethoxytriptvcene: Further evidence for the presence of CH3...O hydrogen bond.
- Restricted rotation involving the tetrahedral carbon. XXXIX. 9-(2-Methoxy-1-methylethyl)triptycene derivatives.
- Effects of para-Substituents on the Rates of Inversion of Biphenyl Derivatives. I. 5,7-Dihydrodibenzo[c,e]thiepins
- Restricted rotation involving the tetrahedral carbon. LIX Stereodynamics of singly peri-substituted 9-(3,5-dimethylphenoxy)triptycene derivatives.
- Restricted rotation involving the tetrahedral carbon. LII. Rotational barriers in 1,2,3,4-tetrafluoro- and 1,4-dimethoxy-9-(1-cyano-1-methylethyl)triptycenes.
- Reactivities of stable rotamers. VIII. Difference in reactivities of 1,2,3,4-tetrachloro-9-(2-halo-1,1-dimethylethyl)triptycene rotamers in Lewis acid-catalyzed reactions.
- Nuclear Magnetic Resonance Study of the Effect of the Hydrogen Bond on the Internal Rotation of Biphenyls
- Restricted rotation involving the tetrahedral carbon. LV. Differential effects of the peri-substituents on the rotational barriers in 9-ethyl-,9-allyl-, and 9-benzyltriptycenes.
- Attractive interactions between carbonyls and groups bearing lone-pair electrons in triptycene systems.
- Restricted rotation involving the tetrahedral carbon. L. Rotamer distributions and rotational barriers in some 9-(1-methoxyethyl)triptycene derivatives.
- CH3...O Hydrogen bond. Implications of its presence from the substituent effects on the populations of rotamers in 4-substituted 9-ethyl-l-methoxytriptycenes and 9-(substituted phenoxymethyl)-1,4-dimethyltriptycenes.
- Restricted rotation involving the tetrahedral carbon. XLIV. Atropisomers of 2,3-dichloro-9-(1-hydroxy-1-methylethyl)-triptycene and related compounds.
- Reactivities of stable rotamers. XXIV. Formation of isomeric ketones by cyclization of rotameric 3-methyl-3-(1,2,3,4-tetrahalo-9-triptycyl)butanoyl chloride and barriers to isomerization of the ketones.
- Restricted rotation involving the tetrahedral carbon. XXXI. Barriers to rotation in 2,3-dichloro-9-(1-cyano or 1-methoxycarbonyl-1-methylethyl)triptycenes.