Cu(I)-catalyzed oxidative cyclization of alkynyl oxiranes and oxetanes |
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Authors: | Gronnier Colombe Kramer Søren Odabachian Yann Gagosz Fabien |
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Affiliation: | Département de Chimie, UMR 7652, CNRS/ Ecole Polytechnique, 91128 Palaiseau, France. |
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Abstract: | In the presence of a Cu(I) catalyst and a pyridine oxide, alkynyl oxiranes and oxetanes can be converted into functionalized five- or six-membered α,β-unsaturated lactones or dihydrofuranaldehydes. This new oxidative cyclization is proposed to proceed via an unusual allenyloxypyridinium intermediate. |
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