442 HELVETICA CHIMICA ACTA - Vol. 62, Fasc. 2 (1979) - Nr. 43 ... 43. The Synthesis and Reactions of Dialkyl 1-Vinylvinyl-Phosphates ... Summary 3,4-Dichlorobutanone reacts with trialkyl phosphites to give dialkyl 1,3-buta- dien-2-yl phosphates. Their structures were determined by spectroscopic methods and various chemical reactions. ... Vicinal dihalides with electron-withdrawing groups adjacent to one or both halogen atoms are known to be dehalogenated on treatment with ...
