| 摘要 |
<p>The invention relates to a method for producing mono-hydroxy-functionalized dialkylphosphinic acids, esters and salts. The method is characterized by the following steps: a) reacting a phosphinic acid source (I) with olefins (IV) in the presence of a catalyst A to give an alkylphosphonous acid, the salt or the ester (II) thereof, b) reacting the alkylphosphonous acid so obtained, the salt or the ester (II) thereof with a vinyl ester of a carboxylic acid of formula (V) in the presence of a catalyst B to give a mono-functionalized dialkylphosphinic acid derivative (VI) and c) reacting the mono-functionalized dialkylphosphinic acid derivative (VI) so obtained in the presence of a catalyst C to give a mono-hydroxy-functionalized dialkylphosphinic acid derivative (III), wherein R1, R2, R3, R4, R5, R6, R7 are the same or different and independently of each other inter alia represent H, C1-C18 alkyl, C6-C18 aryl, C6-C18 aralkyl, C6-C18 alkylaryl and X represents H, C1-C18 alkyl, C6-C18 aryl, C6-C18 aralkyl C6-C18 alkylaryl, Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Cu, Ni, Li, Na, K and/or a protonated nitrogen base and the catalyst A is a transition metal and/or a transition metal compound and/or a catalyst system which is composed of a transition metal and/or a transition metal compound and at least one ligand, and the catalyst B is a peroxide-forming compound and/or a peroxo compound and/or an azo compound, and the catalyst C is an acid or a base.</p> |
