Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Richard A. Y. Jones"'
Publikováno v:
J. Chem. Soc. B. :1795-1799
Comparison of dipole moments of meta-chloro-, para-chloro-, and 3,5-dichloro-substituted compounds with parents enable the calculation of group dipole directions, of interaction moments, and of cis–trans conformational equilibria in the meta-substi
Publikováno v:
J. Chem. Soc. B. :1316-1320
The title compounds, and a 3′-methyl analogue of the former, have been prepared and their low-temperature n.m.r. spectra studied to elucidate their conformational equilibria and hence allow deductions regarding the steric requirements of the formal
Publikováno v:
J. Chem. Soc. B. :1302-1307
The use of dipole moment and n.m.r. measurements of spiro-1-t-butylpiperidines and spiro-1,3-dioxans is proposed as a general method for the investigation of intramolecular interaction in situations of defined geometry. The method is applied to the t
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :41-44
The title compounds have been prepared and the conformational equilibria for the oxiran and thiiran (4, 5; a ⇌ b) elucidated by electric dipole moment measurements. The relative steric requirements of CH2-groups and of O- and S-atoms in three membe
Publikováno v:
J. Chem. Soc. B. :1308-1315
Compounds of the type mentioned in the title have been prepared and their dipole moments and low-temperature n.m.r. spectra investigated to provide evidence on the position of the conformational equilibria of type (1a)⇌(1b) and hence of the relativ
Autor:
A.R. Katritzky, Richard A. Y. Jones
Publikováno v:
Angewandte Chemie International Edition in English. 1:32-41
Nuclear magnetic resonance of the 31P nucleus is suitable for the structural elucidation of phosphorus compounds, also for analytical and kinetic studies. In this paper, an attempt has been made towards the presentation of a comprehensive review of a
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :668-670
Electric dipole moments show that electronic interactions are greater in methyl- and chloro-pyrazines than in analogous benzene and pyridine compounds.
Publikováno v:
Chemischer Informationsdienst. 6
Publikováno v:
Chemischer Informationsdienst. 6
Publikováno v:
Chemischer Informationsdienst. 5