Some New Radical Reactions of Xanthates |
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Authors: | B atrice Quiclet-Sire,Samir Z. Zard |
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Affiliation: | Béatrice Quiclet-Sire,Samir Z. Zard |
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Abstract: | Xanthates are convenient precursors of a variety of radicals that can be captured in an inter- or intramolecular fashion. Overall, the process involves rupture of the sulfide C-S bond and addition of the elements of the xanthate to the olefinic trap. The xanthate in the product can be used in another radical sequence or ionically modified in a great variety of ways. S-Propargyl xanthates exhibit a special but interesting behaviour which involves a sigmatropic rearrangement to the corresponding allene and ring closure to a novel betaine. |
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Keywords: | Xanthates Radicals Radical additions Deoxy sugars |
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