Correlation of the Methyl Substitution Effect upon the Chemical Shifts of ortho-Protons with π-Bond Orders in Aromatic Molecules.
スポンサーリンク
概要
- 論文の詳細を見る
From a number of collected proton magnetic resonance data on various aromatic molecules and their methyl derivatives, it was derived a hypothesis that the methyl substitution effect. upon the signal position of an ortho-proton transmits through the aromatic C=C bond having more double bond character (the larger value of π-bond order) more strongly than through the C=C bond having less double bond character (the smaller value of π-bond order). This rule might be useful in inferring the double bond character of a C=C bond in an aromatic molecule.
- 公益社団法人日本薬学会の論文
- 1967-07-25
著者
-
通 和夫
Shionnogi Research Laboratory Shionogi and Co., Ltd.
-
渡辺 春幸
Shionogi Research Laboratory Shionogi & Co. Ltd.
-
通 和夫
Shionogi Research Laboratory Shionogi & Co. Ltd.
-
大鶴 真佐子
Shionogi Research Laboratory, Shionogi & Co., Ltd.
-
大鶴 真佐子
Shionogi Research Laboratory Shionogi & Co. Ltd.
関連論文
- Structures of Polygalacin-D and -D_2,Platycodin-D and -D_2,and Their Monoacetates, Saponins isolated from Platycodon grandiflorum A. DC., determined by Carbon-13 Nuclear Magnetic Resonance Spectroscopy
- Structures of Prosapogenins from Roots of Platycodon grandiflorum determined by Carbon-13 and Hydrogen-1 Nuclear Magnetic Resonance Spectroscopy
- Nuclear Magnetic Resonance Spectroscopic Evidence for Distorted Conformations of the C-Rings in 8β, 11β- and 11β, 13β-Bridged Steroids
- Isolation, Characterization, and Nuclear Magnetic Resonance Spectra of New Saponins from the Roots of Bupleurum falcatum L.
- Pyridazines. IX. Proton Magnetic Resonance Studies of Pyridazine, Pyrazine, and Substituted Pyridazines.
- Pyridazines. VIII. Syntheses and Nuclear Magnetic Resonance Spectra of Cinnoline N-Oxides.
- Proton Magnetic Resonance Spectra of the Benzazine and Benzodiazine N-Oxides
- Pyridazines. IV. Nuclear Magnetic Resonance Studies of Pyridazine N-Oxide and Its Derivatives.
- Pyridazines. III. The Dipole Moments and the Structures of Monomethylpyridazine N-Oxides.
- Synthesis of Cinnoline N-Oxides
- Studies on Azaindolizine Compounds. XVIII. Proton Magnetic Resonance Spectra of s-Triazolo-[1,5-α] pyrimidine and its Derivatives.
- Correlation of the Methyl Substitution Effect upon the Chemical Shifts of ortho-Protons with π-Bond Orders in Aromatic Molecules.
- Separation and Structure of 3-Methylpyridazine 1-Oxide and 2-Oxide
- Proton Magnetic Resonance Spectra of Several Types of Substituted Ammonium Ions
- Camphane Derivatives. VII. Syntheses and Structure of 3-Methyl-3aβ, 7aβ-bornano[3,2-d]oxazolidin-2-one and its Derivatives
- Conformations of α-and β-Thujones
- Nuclear Magnetic Resonance Studies of Bridged Ring Systems. V. Signals of Methyl Groups in Bornane Derivatives
- Isolation of cis-and trans-2-Methoxymethylene-3-ethoxypropionitrile