Quarterly Journal of the Chemical Society of London, Volume 1 |
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Results 1-3 of 83
Page 558
... Figures 1-3 are consistent . The results for the aprotic solvents ( Figure 1 ) show that the low - field resonance d1 , relative to the N - methyl cis to the formyl proton , exhibits a diamagnetic dilution shift . The high - field ...
... Figures 1-3 are consistent . The results for the aprotic solvents ( Figure 1 ) show that the low - field resonance d1 , relative to the N - methyl cis to the formyl proton , exhibits a diamagnetic dilution shift . The high - field ...
Page 559
... ( Figure 3 ) in that △ either remains constant or decreases with dilution , while both resonances exhibit a marked paramagnetic shift which is qualitatively correlated with the proton - donating power of the solvents . This sym- metrical ...
... ( Figure 3 ) in that △ either remains constant or decreases with dilution , while both resonances exhibit a marked paramagnetic shift which is qualitatively correlated with the proton - donating power of the solvents . This sym- metrical ...
Page 615
... Figure 5 ) sharing a bond . Attack at the most reactive site ( adjacent to 4n " +2 ring ) leads to the situation shown in Figure 5 , i.e. according to our definition the compound is antiaromatic , hence the theorem is proved for all ...
... Figure 5 ) sharing a bond . Attack at the most reactive site ( adjacent to 4n " +2 ring ) leads to the situation shown in Figure 5 , i.e. according to our definition the compound is antiaromatic , hence the theorem is proved for all ...
Contents
Physical organic chemistry | 1 |
Topochemistry Part XXX Crystal and molecular structures of chalcone | 11 |
Conformational studies Part I Crystal and molecular structures of cis12dipchlorobenzoyl and cis | 17 |
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A. R. Katritzky alcohol alkyl Amer anion aqueous aromatic ation axial benzene bond bromination calculated carbanion carbon acids carbon atom carbon tetrachloride carbonyl catalyst Chem chemical shifts Chemistry chloride complex compounds concentration conformation correlation coupling constants crystal cyclohexane derivatives difference dilute dimethyl sulphoxide dioxan electron elimination energy equation equatorial equilibrium ester ethanol ether experimental Figure fluorene formation fraction H₂O H₂SO hydrogen hydrolysis hydroxide indicators interaction intermediate ionisation isomer isomerization isotope effect k₁ k₂ kcal kcal./mole kinetic measured mechanism methyl mixture mole mole-¹ molecular molecule n.m.r. spectra nitration nitrogen nucleophilic observed obtained oxide oxime oxygen parameters phenyl Phys piperidine plot proton pyridines R. P. Bell radical rate constants ratio reaction reactivity ring shown shows sodium solution solvent spectrum structure substituents sulphuric acid t-butyl Table temperature Tetrahedron thiophen transition values