The lanthanide-induced shifts (LIS) of the lanthanide shift reagent (LSR) Eu(FOD)3 are reported for a large number of cyclohexanones, especially those which are highly substituted. The following compounds were synthesized and characterized: 3-(aryl)-3,5,5-trimethylcyclohexanones, in which aryl...
The first application of tritium NMR spectroscopy to the direct observation of proton-exchange kinetics is described; this technique allows the study of milligram amounts of substrates and for substrates with multiple exchangeable positions. The examples include benzene and the ring and methyl positions...
Proton Nuclear Magnetic Resonance (NMR) Spectroscopy of urine (as well as of other biological fluids) is a very powerful technique enabling multi-component... G Pontoni,F Rotondo,G Spagnuolo,... - 《Amino Acids》 被引量: 19发表: 2000年 A direct in situ observation of water-enhanced prot...
The percentage composition of mixtures of four methylcyclohexanones was determined using 13C NMR spectroscopy as a quantitative analytical method. The data... JW Lefevre,A Silveira - 《Journal of Chemical Education》 被引量: 23发表: 2000年 Nuclear magnetic double resonance using very strong decoupli...
The main conformation in solution (C6D6) of monofluorinated 2,2′,5-tri- and 2,2′,5,5′-tetra-substituted cyclohexanones have been studied using 1D and 2D NMR. It has been shown that for tri-substituted ketones the two possible diastereomers differ by the orientation of the fluorine ...
Factors such as the reaction temperature and molar ratio of catalyst to initiator, which could affect the ATRP system, were discussed in the paper. Chain extension was conducted using polymer as the macro-initiator which was characterized via 1H NMR. The optical property of initiator was well ...
Lanthanide-induced shifts in proton NMR spectra of cyclohexanonesdoi:10.1002/mrc.1270050107B. L. ShapiroDepartment of Chemistry, Texas A & M University College Station, Texas 77843, USAM. D. JohnstonDepartment of Chemistry, Texas A & M University College Station, Texas 77843, USAM. J. Shapiro...
ChemInform Abstract: PROTON NMR INVESTIGATION OF THE INTERCONVERSION EQUILIBRIUM OF 2,2,3,3,5,5‐HEXAMETHYLCYCLOHEXANONE AND ITS COMPLEX WITH BORON TRIFLUORIDEstructure (organic substances)No abstract is available for this article.doi:10.1002/chin.197618081...
ChemInform Abstract: CONFORMATIONAL AND RELATED STUDIES OF -MERCURICYCLOHEXANONES BY PROTON, CARBON-13, AND MERCURY-199 NUCLEAR MAGNETIC RESONANCEmagnetic resonance, nuclear quadrupole resonance (organic substances)NMR-Daten an Organomercuri-Derivaten (I) und (II) werden mitgeteilt.doi:10.1002/chin....
Conformational and related studies of .alpha.-mercuricyclohexanones by proton, carbon-13, and mercury-199 nuclear magnetic resonancemagnetic resonance, nuclear quadrupole resonance (organic substancesNMR-Daten an Organomercuri-Derivaten (I) und (II) werden mitgeteilt....