Etude i.r. et NMR de diaryl-2,4 diéthoxycarbonyl-5,5Δ1 pyrrolines

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Abstract

The spectroscopic properties (i.r., NMR) of 2,4-diaryl-5,5 diéthoxycarbonyl Δ1 pyrrolines has been studied. Chemical shifts and coupling constants of pyrrolinic protons are affected by effect of substitution on phenyl rings. In all cases, we have noted the conservation of magnetic non-equivalence of ethyl ester and methylene groups. Examination of these NMR data gives conformational approach of these pyrrolines.

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