• Formation of phosphoranes from methyl maleanilates and related substrates with triphenylphosphine and their Wittig olefinations with aromatic aldehydes

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    • Keywords


      Wittig reactions; maleic acid derivatives; stabilised phosphoranes

    • Abstract


      An efficient method to obtain phospharanes from triphenylphosphine (TPP) and maleic anhydride (MA), dialkyl maleates, N-aryl maleimides and methyl N-aryl maleanilates is reported. These stabilised phosphoranes react with aromatic aldehydes to yieldE-olefins but fail to react with monoketones and 1,2-diketones. With the more reactive triketone, ninhydrin, the reaction is positive. The order of reactivity of these reagents in olefination appears to be imides=isomaleimides>maleanilates>dialkyl maleates>anhydrides.

    • Author Affiliations


      V Balasubramaniyan1 D B Tongare1 S S Gosavi1 S M Babar1

      1. Science Research Centre, Department of Chemistry, HPT Arts and RYK Science College, Nashik - 422 005, India
    • Dates

  • Journal of Chemical Sciences | News

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