The preparation of five (E)- and five (Z)-1,1-disubstituted buts-1,3-dienes is described and their stereochemistry assigned. The effect of the Z–E isomerism on the chemical shifts in the 13C and 1H n.m.r. spectra is discussed.
M. J. Curry and I. D. R. Stevens, J. Chem. Soc., Perkin Trans. 1, 1980, 1756 DOI: 10.1039/P19800001756
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