Abstract
The review deals with the reactions of the chlorides of acids derived from trivalent and tetravalent phosphorus with unsaturated compounds. Apart from their theoretical importance, these reactions are of great practical interest, since with their aid it is possible to obtain a wide variety of new and interesting types of organophosphorus compounds. In the first part of the review the addition reactions of various halides of trivalent phosphorus acids to ethylene and diene hydrocarbons, αβ-unsaturated aldehydes, ketones, and acids are considered, as well as the oxidative chlorophosphination of unsaturated compounds. The second part of the review is devoted to the reactions of the chlorides of pentavalent phosphorus acids with ethylenic, acetylenic, and diene hydrocarbons and with vinyl ethers and esters and also the addition reactions of dialkoxyphosphinothiolic and dialkoxyphosphinoselenolic chlorides.