A Simple and Efficient Route to 2-Alkyl-2-alkenoic Acids and 2-Phenyl-2-Alkenoic Acids by the Horner Synthesis. Application to the Steroselective Synthesis of the Pheromone Manicone

Article abstract of DOI:10.1055/s-1986-31784

A general synthesis of α-branched α,β-unsaturated carboxylic acids is described.A Horner reaction of 2-diethoxyphosphorylalkanoic acid dianions (lithium α-lithiocarboxylates) with carbonyl compounds is used.The reaction is applied to the stereoselective synthesis of Manicone.