Method for producing mono-hydroxyfunctionalized dialkylphosphinic acids and esters and salts thereof by means of acroleins and use thereof
US8604108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2009 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Mar 18, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/5313
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing mono-hydroxyfunctionalized dialkylphosphinic acids and esters and salts thereof by means of acroleins, characterized in that a) a phosphinic acid source (I) is reacted with olefins (IV) to yield an alkylphosphonic acid, salt or ester (II) thereof in the presence of a catalyst A, b) the thus obtained alkylphosphonic acid, salt or ester (II) thereof is reacted with compounds of formula (V) to yield a mono-functionalized dialkylphosphinic acid derivatives (IV) in the presence of a catalyst B, and c) the thus obtained mono-functionalized dialkylphosphinic acid derivatives (VI) are reacted to yield a mono-hydroxyfunctionalized dialkylphosphinic acid derivative (III) in the presence of a catalyst C, wherein R1, R2, R3, R4, R5, R6, R7 are the same or different and stand independently of each other, among other things, for H, C1-C18 alkyl, C6-C18 aryl, C6-C6-C18 aralkyl, C6-C18 alkylaryl, and X stands for 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 protonized nitrogen base, and the catalyst A and C are formed by transition metals and/or tran…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.