A Direct and Efficient Synthesis of Allenyl Sulfones by the Horner-Wittig Reaction

Article abstract of DOI:10.1055/s-1987-28052

Allenic sulfones are directly prepared by the Horner-Wittig reaction of diethyl methyl(or aryl)sulfonylmethylphosphonate anions with ketenes.The method affords excellent to moderate yields respectively with phenylethyl and diphenylketene, the latter being more sensitive to basic media.