Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 29
... signal broadens and appears to coalesce with a second low - intensity signal which at -7 ° must have coincided with the high- intensity signal ( Figure 6 , B ) . At 50 ° two sharp aryl- methyl signals are observed ( 7-49 and 7-52 ) ...
... signal broadens and appears to coalesce with a second low - intensity signal which at -7 ° must have coincided with the high- intensity signal ( Figure 6 , B ) . At 50 ° two sharp aryl- methyl signals are observed ( 7-49 and 7-52 ) ...
Page 31
... signal ( 7-43 ) , which is associated with the helical conformation . ( VIII or VIIIa ) , slowly appeared ; from the rate of appearance of this second signal , a direct measurement could be made of the rate constants for the first ...
... signal ( 7-43 ) , which is associated with the helical conformation . ( VIII or VIIIa ) , slowly appeared ; from the rate of appearance of this second signal , a direct measurement could be made of the rate constants for the first ...
Page 139
... Signal level 50 7-3-27 ( B ) Signal level 50 ( c ) 7-3-28 wwwwwwww m Signal level 50 H2O 7-632 7-6.32 7.135 T = 7-08- 7.165 Signal level 25 T - 7.08 T - 7.155 Signal level 25 T - 6.32 Signal level 25 T = 7-11 FIGURE 1 H N.m.r. spectrum ...
... Signal level 50 7-3-27 ( B ) Signal level 50 ( c ) 7-3-28 wwwwwwww m Signal level 50 H2O 7-632 7-6.32 7.135 T = 7-08- 7.165 Signal level 25 T - 7.08 T - 7.155 Signal level 25 T - 6.32 Signal level 25 T = 7-11 FIGURE 1 H N.m.r. spectrum ...
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