An effective synthesis of novel functionally substituted nitrogen-and phosphorus-containing salts of 3-tert-butylperoxy-3-methylbutanoic acid, potential sources of free radicals, have been developed.Peroxy-containing carboxylic acids and their salts are effective high-temperature promoters of polymer adhesion to metals [134].The aim of the present work was to synthesize novel functionally substituted nitrogen-and phosphorus-containing salts of 3-tert-butylperoxy-3-methylbutanoic acid, potential sources of free radicals, and to