New Unusual Reactions in the Chemistry of Unsaturated Organophosphorus Compounds

Abstract

Arbusov reaction of trialkyl phosphites with haloalkynes opened a new route to the synthesis of acetylenic phosphonates as well as attracted the investigators attention to the nucleoohilic substitution of halogene at sphybridized carbon atoms. The most important compounds of this type are chloro- and bromoethyne phosphonates formed by the action of dihaloethynes upon phosphites. These polyfunctional compounds may interact via triple bond opening and/or halogene substitution. The latter pathway results in the formation of different phosphonates and diphosphonates (1):