Quarterly Journal of the Chemical Society of London, Issue 1, Pages 1-776 |
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Page 33
... protons in piperidine derivatives has been determined by 220 MHz n.m.r. , and is discussed in relation to the modes of electron spin distribution through the o - skeleton . We have reported1 the relative paramagnetic shifts of 2 ...
... protons in piperidine derivatives has been determined by 220 MHz n.m.r. , and is discussed in relation to the modes of electron spin distribution through the o - skeleton . We have reported1 the relative paramagnetic shifts of 2 ...
Page 35
... protons attached to the tropane skeleton in ( III ) are magnetically different , on account of the presence of an asymmetric centre.3 The spectra were analysed on the basis of the coupling features and with the double resonance ...
... protons attached to the tropane skeleton in ( III ) are magnetically different , on account of the presence of an asymmetric centre.3 The spectra were analysed on the basis of the coupling features and with the double resonance ...
Page 321
... protons . † The following features are apparent : A signals of the aromatic ( I ) and the adjacent methylene protons ( II ) undergo the most pronounced upfield shifts , signal of the proton ( V ) on the carbon bearing the rized carboxyl ...
... protons . † The following features are apparent : A signals of the aromatic ( I ) and the adjacent methylene protons ( II ) undergo the most pronounced upfield shifts , signal of the proton ( V ) on the carbon bearing the rized carboxyl ...
Contents
Page | 1 |
Electrochemical Indications of New Oxidation States in Transitionmetal Dicarbollide Complexes | 8 |
Synthesis of a 1026Pyridinophane by U K GEORGI and J RÉTEY | 32 |
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acetate acid addition alcohol Amer analysis appears aromatic assigned atoms band bond calculated carbon carbonyl Chem Chemical Chemistry chloride chromatography co-ordination Comm complexes compounds concentration configuration confirmed consistent constants containing corresponding coupling Crystal Department of Chemistry derivatives determined effect electron ester ether evidence expected experiments Figure followed formation formed gave give hydrogen indicate intermediate involving isolated ligand mass measured mechanism metal method methyl mixture molecular molecule n.m.r. spectrum nitrogen observed obtained occurs oxidation oxygen peak position possible prepared presence protons radical ratio reaction rearrangement Received recently reduction relative reported Research resonance respectively ring Scheme shift shown shows signals similar solution solvent space group spectra spectrum structure studies substituted suggested Summary synthesis Table temperature Tetrahedron Letters thank tion University values X-ray yield