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Oxonium ylides are highly reactive intermediates that can be used for the synthesis of heterocyclic and carbocyclic frameworks. These putative intermediates are almost exclusively formed from diazocarbonyl derived metallocarbenes, by attack of a pendent oxygen atom. Oxonium ylides have been...
The Stevens [1,2]-rearrangement of onium ylides has been employed as a valuable synthetic method to construct new C-C bonds. Oxonium ylides are reactive intermediates that undergo facile Stevens rearrangement under mild conditions. In the last several decades, the Stevens rearrangement of oxonium...