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.
烯丙基磺醚是通过
二乙基甲基(或芳基)磺酰基甲基
磷酸酯阴离子与酮烯的霍纳-威蒂格反应直接制备的。该方法在
苯乙烯和二苯酮的反应中分别获得了优良到中等的产率,后者对碱性介质更为敏感。