Abstract
AbstractVinyl thianthrenium salt is a compound with interesting electrophilic properties capable of reacting with two distinct nucleophiles. By using β‐keto esters as one of the reaction partners, it is possible to insert a chain of two carbon atoms with a further functionalization under mild conditions. We have studied this new methodology which involves the stepwise formation of a C−C and a C−X bond (with X=N, O, etc.) in one step without the use of metals. Depending on the reaction conditions and the starting ketoester, a varied reactivity has been observed and described.
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