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References
Staudinger and Brusson, Annalen, 447, 103, 110 (1926), and Carmondy, Sheehan and Kelly, Indust. Eng. Chem., 30, 245 (1938), prepared polycyclopentadienes and suggested repeating units as in (Ic) or (Id); it is possible that some of the polycyclopentadienes described in the recent patent literature are also built up according to this latter structural principle; cf., for example, Soddy, U.S.A. Patent, 2319271.
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EISLER, B., WASSERMANN, A., FARNSWORTH, F. et al. Catalytic Conversion of a Diene into Deeply Coloured Polyenes. Nature 168, 459–461 (1951). https://doi.org/10.1038/168459a0
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DOI: https://doi.org/10.1038/168459a0
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