The Horner-Wadsworth-Emmons Modification of the Wittig Reaction Using Triethylamine and Lithium or Magnesium Salts

Article abstract of DOI:10.1021/jo00215a004

A variety of aldehydes were converted into the corresponding α,β-unsaturated esters using triethyl phosphonoacetate and triethylamine in the presence of lithium or magnesium halides.Under the same conditions, simple methyl ketones were unreactive.