The Four Isomeric 1,3,5-Undecatrienes. Synthesis and configurational assignment |
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Authors: | Ferdinand N f,Ren Decorzant,Walter Thommen,Bruno Willhalm,Gü nther Ohloff |
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Affiliation: | Ferdinand Näf,René Decorzant,Walter Thommen,Bruno Willhalm,Günther Ohloff |
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Abstract: | The four geometrical isomers of 1,3,5-undecatriene, 1a–d have been prepared (stereospecifically and non-stereospecifically), using either (1) the Wittig reaction, (2) thermal sigmatropic hydrogen shifts, (3) partial reduction of triple bonds by zinc, or (4) organocopper reagents. The thermal behaviour of the four 1,3,5-undecatrienes has been investigated and the products formed have been characterized. The spectra of 1a–d, and of related compounds, have been discussed in order to corroborate their configurational assignment. |
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