Pyridinium ylids in synthesis. II. Acylation and the synthesis of b-dicarbonyl compounds

Abstract
The acylation of N-pyridinium ylids with acid chlorides or anhydrides yields C-acylated ylids which may be reductivaly cleared to yield P-diketones or P-keto esters, depending on the starting materials. The u.v., i.r., and N.M.R. spectra of the ylids are discussed.

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