233. Alkynoate Synthesis through the Vinylogous Reactivity of Rhodium(II) Carbenoids

Authors: Dr. Damien Valette, Dr. Yajing Lian, John P. Haydek, Dr. Kenneth I. Hardcastle, Prof. Dr. Huw M. L. Davies

Angew. Chem. Int. Ed.

20125134, 8636–8639

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Siloxy group migration: A rhodium(II) carbenoid approach has been developed for the synthesis of alkynoates (see scheme). This transformation combines the addition of enol ethers at the vinylogous position of β-siloxy-substituted vinyldiazo derivatives with a siloxy group migration to give

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