NMR study of protonated halothiophenes. I. 1H NMR study of chlorothiophenium ions.
スポンサーリンク
概要
- 論文の詳細を見る
Well-resolved <SUP>1</SUP>H NMR signals of the cations formed from chlorothiophenes were observed in the HSO<SUB>3</SUB>F or AlCl<SUB>3</SUB>–HCl–CH<SUB>2</SUB>Cl<SUB>2</SUB> system. Chlorothiophenes are protonated exclusively at the position adjacent to sulfur, either with or without substituents. The protonation of 2-chloro-5-methylthiophene occurs at the 5-position, and, in the HSO<SUB>3</SUB>F system, the cation 5<I>H</I>-2-chloro-5-methylthiophenium ion thus formed undergoes an irreversible 2,5-hydrogen shift.
- 公益社団法人 日本化学会の論文
著者
-
Takahashi Kensuke
Department Of Applied Chemistry Nagoya Institute Of Technology
-
Yamashita Yukihide
Department of Industrial Chemistry, Nagoya Institute of Technology
-
Yokoyama Yukihiro
Department of Applied Chemistry, Nagoya Institute of Technology
-
Yokoyama Yukihiro
Department of Industrial Chemistry, Nagoya Institute of Technology
-
Sone Tyo
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
関連論文
- Role Bipyridinium Salts in Genration of Photocurrent by Rhodospirillum Rubrum Cells
- Influence of Interface Structure on Oxidation Rate of Silicon : Surfaces, Interfaces, and Films
- Reaction of Strained Homoconjugated Compounds with Benzene in the Presence of Palladium(II) Acetate
- Syntheses of Chiral Calixarene Analog Incorporating Amino Acid Residues : Molecular Recognition for a Racemic Ammonium Ion by the Macrocycles
- Synthesis and Properties of Chiral Calixarene Analogs Bridged by a(R, R)-Cystine Unit
- Synthesis and Preperties of Pentahomothiazacalix [3] arene Derivatives Constructed from Phenol-Formaldehyde Trimer and Aminoethanethiol Unit
- s-cis-(Z, Z) Structure of 1,2-Bis(2-pyridyl) ethylene Dianion in Solution
- Energy Barrier for Valence Electrons at SiO_2/Si(111) Interface
- Photoisomerization Reactions of 8-Azatricyclo[3.2.1.0^]oct-6-ene Derivatives Leading to Azabishomobenzene Derivatives
- Effects of Carbon Addition on Microstructures and Mechanical Properties of Binderless Tungsten Carbide
- Hindered internal rotation around the C-N bond in 1H-azepine derivatives as studied by the NMR techniques.
- Reactions of benzocyclopropene with sulfonyl isocyanates and nitrones: Cycloadditions through C-C .SIGMA.-bond rupture of three-membered ring.
- NMR studies of picolyl-type carbanions. V. 7Li and 13C spectra of picolyl-type anions with lithium as a counter ion.
- A study of the redistribution reaction of tetramethyltin with dimethyltin dichloride in several aprotic solvents.
- Acid-catalyzed reactions of thiophene nuclei. VII. Synthesis of 3,4'-diaryl- and 4,4'-diaryl-2,2'-bithienyls from 2,5-dichlorothiophene.
- The 1H and 13C NMR of the tetraphenylcyclopentadienone dianion.
- Carbon-13 NMR study of naphthylmethanide ions in polar solvents.
- A novel rearrangement of protonated 2-bromo-5-methylthiophene.
- Proton and carbon-13 NMR study of 1,1,4,4-tetraphenyl- and 1,4-diphenyl-1,3-butadiene dianions in solution. The charge distributions, structural features and rotational barriers of phenyl groups.
- NMR study of protonated halothiophenes. I. 1H NMR study of chlorothiophenium ions.
- Reactions of azepine, diazepine, tropone, and cyclopentadienone derivatives with some chlorosilane derivatives in the presence of magnesium.
- A new and simple route to 3-arylthiophenes.
- Deuterium Isotope Effects on Aromatic Carbon-13 Chemical Shifts. III. One-, Two-, and Three-Bond Isotope Effects on the 13C Chemical Shifts of 3-Substituted Pyridines.
- Deuterium isotope effects on aromatic carbon-13 chemical shifts. II. Dependence of one- and two-bond isotope shifts on electron densities of substituted benzenes.
- Internal rotation of tetraphenylethylene dianion as studied by H-1 and C-13 NMR.
- The C-13 NMR spectra of thiophenes. II. 2-Substituted thiophenes.
- Nuclear Magnetic Resonance Spectra of Carbanions. VIII. α-Picolyllithium
- Reactions of sodium salts of tosylhydrazones of 2- and 3-thiophenecarbaldehydes, 1-methyl-2-pyrrolecarbaldehyde, and furfural with acrylonitrile.
- Kinetic studies by means of the NMR techniques. I. Acid-catalyzed proton-exchange reactions of some substituted phenols.
- 13C NMR chemical shifts and cationic reactivity of linear conjugated dienes.
- Correlations among One-Bond Deuterium Isotope Shifts in 13C NMR and C-H Stretching Frequencies in IR for Monosubstituted Methane Derivatives.
- 1H and 19F NMR spectra of some fluorocyclobutane derivatives.
- Homoconjugated diene as a dienophile to troponoid compounds: The stereoselective addition reactions of tropone and 8,8-dicyanoheptafulvene with tricyclo(3.2.2.02,4)nona-6,8-diene derivative and thermal and photochemical isomerizations of the adducts.
- A novel Friedel-Crafts type reaction of 2-chlorothiophene with some active aromatic compounds.
- NMR studies of picolyl-type carbanions. IV. Anions produced by reactions of 2-substituted pyridines with butyllithium.
- NMR study of protonated halothiophenes. II. An ab initio self-consistent field calculation of the protonation of chlorothiophenes.
- Reactions of 2-chlorothiophene with cation exchange resin and 100% orthophosphoric acid. Formation of the dimer type products containing a tetrahydro-2-thiophenone moiety.
- Nontemplate synthesis of macrocyclic tetraimine Schiff bases incorporating dithienylmethane units.
- 1H and 19F NMR study of p-chlorobenzylidyne trifluoride partially oriented in a nematic phase.