Quarterly Journal of the Chemical Society of London, Volume 1 |
From inside the book
Results 1-3 of 39
Page 131
... equatorial N - methyl and N - ethyl groups are a little smaller than in the corres- ponding N - alkylpiperidines and accord with a repulsion between ... equatorial conformation . Thus , for piperidine itself the equatorial Phys . Org . 131.
... equatorial N - methyl and N - ethyl groups are a little smaller than in the corres- ponding N - alkylpiperidines and accord with a repulsion between ... equatorial conformation . Thus , for piperidine itself the equatorial Phys . Org . 131.
Page 212
... equatorial ( ca. 3630 cm . - 1 ) and axial ( 3626 cm . - 1 ) conformers . Similar features in a - deuteriocyclopentanol are accompanied by corresponding ones in ( C - D ) at 2155 cm . - 1 for the equatorial , and 2132 cm . - 1 for the ...
... equatorial ( ca. 3630 cm . - 1 ) and axial ( 3626 cm . - 1 ) conformers . Similar features in a - deuteriocyclopentanol are accompanied by corresponding ones in ( C - D ) at 2155 cm . - 1 for the equatorial , and 2132 cm . - 1 for the ...
Page 333
... equatorial methyl group . On the introduction of a 2 - methyl group , which should be pre- dominantly equatorial , C ( 2 ) experiences a shift of -53 p.p.m. ( cf. cyclohexane , -5.6 p.p.m. ) . The effect on C ( 4 , 6 ) is negligible ( + ...
... equatorial methyl group . On the introduction of a 2 - methyl group , which should be pre- dominantly equatorial , C ( 2 ) experiences a shift of -53 p.p.m. ( cf. cyclohexane , -5.6 p.p.m. ) . The effect on C ( 4 , 6 ) is negligible ( + ...
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 |
23 other sections not shown
Other editions - View all
Common terms and phrases
4-nitroaniline A. R. Katritzky acetic acid activation energy alcohol Amer amine anion aqueous aromatic aryl-methyl ation axial benzene bond bond dissociation energies bromination calculated carbanion carbon acids catalyst Chem chemical shifts Chemistry chloride compounds concentration conformation corresponding coupling constants crystal cyclohexane derivatives deviations dilute dimethyl sulphoxide dipole electron equation ether ethylene experimental Figure fluorene formation fraction H₂O hydrocarbons hydroxide increase indicators interactions intermediate ionisation isomer isomerization isotope effect k₁ k₂ kcal kcal./mole kinetic Mc./sec measured mechanism methanol methyl mixture mole mole-¹ molecular molecules n.m.r. spectra nitrogen nucleophilic observed obtained oxide oxygen parameters phenyl Phys piperidine proton pyridines R. P. Bell radical rate constants ratio reaction relative ring selenophen shown shows signal sodium solution solvent spectrum structure substituted t-butyl Table temperature Tetrahedron thiophen transition tri-o-thymotide triethylamine triphenylmethane wave