alpha,beta-epoxy vinyl triflates in Pd-catalyzed reactions |
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| Authors: | Yamamoto K Heathcock C H |
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| Affiliation: | Department of Chemistry, University of California, Berkeley, 94720-1460, USA. |
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| Abstract: | [reaction: see text] Reactions of steroidal alpha,beta-epoxy vinyl triflates in Pd-catalyzed reactions are described. Oxidative insertion of Pd(0) into the C-O bond, giving vinylpalladium 12, is faster than formation of the pi-allyl derivative from the vinyl epoxide. Although 12 can be trapped under certain conditions, it eventually rearranges to palladium alkoxide 14, which is in equilibrium with 15 and/or 10. |
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