| abstract |
PROBLEM TO BE SOLVED: To provide a method for producing a phosphinic acid ester which is easy to carry out and can obtain a product in a high yield. A) reacting elemental yellow phosphorus with an alkylating agent in the presence of a base to obtain a mixture containing, as main components, a (metal) salt of a monoalkanephosphinic acid, phosphorous acid and phosphinic acid; The main component of the mixture from a is esterified to give an ester mixture, c) the ester of monoalkanephosphinic acid is separated from this ester mixture, and d) the resulting monoalkanephosphinic ester is added to the functionalized olefin. Specific examples of the reaction of a, b, and d include those of Reaction Formulas 7, 8, and 9. |