Abstract
Proton and natural abundance carbon-13 Fourier transform n.m.r. spectra of ten 2,2-dialkyldimedones have been examined at 100 and 20 MHz respectively. Chemical shifts have been assigned in each case. In contrast to the significant long-range anisotropic shielding observed in the 1H n.m.r. spectra of 2-benzyl compounds, there was a slight deshielding of the corresponding carbon nuclei in the 13C spectra. The preparation of several new dialkyldimedones is also described.
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