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The high-field 1H NMR spectra of 1,3-propanesultams (2), 2,4-butanesultams (3) and 2,4-dimethyl-1,3-butadienesultams (6) are reported.Comparison of 2, 3 and 6 with 1,3-propanesultone (1) and 2,4-dimethyl-1,3-butadienesultone (5) reveals that the paramaggnetic shift induced by the NH group is smaller than that induced by oxygen.NMR spectra at lower temperatures show coupling effects with the NH proton.A half-chair conformation was deduced for 2,4-butanesultam from coupling constants and from a conformational analysis based on the R values, but a chair-chair interconversion could not be detected in the temperature range between 210 and 330 K.An unambiguous assignment was carried out for the methyl signals in the spectrum of 5 by homodecoupling experiments.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 5908-62-3 is helpful to your research. Product Details of 5908-62-3
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Quinuclidine – Wikipedia,
Quinuclidine | C7H561N | ChemSpider