Three-Component Reaction Between Indan-1,2,3-trione2-Oxime and Acetylenic Esters in the Presence of Triphenylphosphine

Abstract

Reaction between indan-1,2,3-trione 2-oxime and electron-deficient acetylenic esters in the presence of triphenylphosphine leads to dialkyl 9-oxo-1,9-dihydro-2-oxa-1-aza-fluorene-3,4-dicarboxylate in good yields. This one-pot method is simple and effective under mild conditions.