Selective reaction of silyl enol ethers with α-chloro-sulphides containing a ketone group

Abstract
Reaction of silyl enol ethers (1) with α-acyl-α-chloro-sulphides (2; n= 0) gives furans (4), whereas with β- or γ-acyl-α-chloro-sulphides (2; n= 1 or 2) diketones (3) are obtained.

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