Summary
In contact with active birch charcoal at 470–480° in a stream of nitrogen 2-n-propyl-4,5-dihydrofuran isomerized to propylcyclopropylketone, whereas 2-n-butyl-2,5-dihydrofuran was dehydrogenated to α-butylfuran under the same conditions.
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Literature cited
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Shuikin, P.I., Bel'skii, I.F. & Karakhanov, R.A. Thermal reactions of dihydrofurans. Russ Chem Bull 12, 338–339 (1963). https://doi.org/10.1007/BF00846410
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DOI: https://doi.org/10.1007/BF00846410