Abstract
Three-component reaction of triphenylphosphine and 2-nitro trans-cinnamaldehyde with dialkyl acetylenedicarboxylate leads to β,γ-unsaturated γ-lactone phosphorus ylides in moderate yields. The reactions of 2-nitro trans-cinnamaldehyde with alkyl propiolates in the presence of triphenylphosphine produce 2H-pyran derivatives in moderate yields without the formation of any γ-lactone derivatives.
Published Version
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