| US 7,547,807 B2 | ||
| Method for producing phosphonium salts | ||
| Laszlo Szarvas, Ludwigshafen (Germany); Klemens Massonne, Bad Dürkheim (Germany); Harald Laas, Maxdorf (Germany); Kai Michael Exner, Eppelheim (Germany); and Detlev Glas, Frankenthal (Germany) | ||
| Assigned to BASF SE, Ludwigshafen (Germany) | ||
| Appl. No. 10/582,912 PCT Filed Dec. 14, 2004, PCT No. PCT/EP2004/014207 § 371(c)(1), (2), (4) Date Jun. 14, 2006, PCT Pub. No. WO2005/058924, PCT Pub. Date Jun. 30, 2005. |
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| Claims priority of application No. 103 59 434 (DE), filed on Dec. 17, 2003. | ||
| Prior Publication US 2007/0123726 A1, May 31, 2007 | ||
| Int. Cl. C07C 315/00 (2006.01) | ||
| U.S. Cl. 568—9 | 17 Claims |
| 1. A process for preparing a quaternary phosphonium salt comprising reacting a trialkyl-, trialkenyl- or triarylphosphine
with an optionally substituted monounsaturated or polyunsaturated aliphatic, cycloaliphatic aromatic-aliphatic alcohol having
from 3 to 25 carbon atoms or its carboxylic acid esters or ethers in the presence of an acid, or by reacting a trialkyl, trialkenyl-
or triarylphosphine with an optionally substituted aliphatic, cycloaliphatic or aromatic-aliphatic halide having from 3 to
25 carbon atoms, wherein the reaction is conducted in a ternary solvent mixture, and
wherein the quaternary phosphonium salt is of general formula I
[R1—P(R2)3]+X− (I),
where
R1 is an optionally substituted monounsaturated or polyunsaturated aliphatic, cycloaliphatic or aromatic-aliphatic group having
from 3 to 25 carbon atoms,
R2 is an alkyl, alkenyl or aryl group having from 1 to 9 carbon atoms,
X is an anion equivalent of an organic or inorganic acid and
the trialkyl-, trialkenyl- or triarylphosphine is of general formula II
P(R2)3 (II),
where R2 has the meaning given above, and the triakyl-, trialkenyl-, or triarylphosphine is reacted with a monounsaturated or polyunsaturated
electophile of the general formula III or IV,
 where R1 has the meaning given above, and
R1′ is an optionally substituted, aliphatic, cycloaliphatic or aromatic-aliphatic hydrocarbon group having from 1 to 21 carbon
atoms,
Y is OH, Cl, Br, O(CO)R3 or OR3 and R3 is an aliphatic hydrocarbon group having from 1 to 6 carbon atoms, and
R4 is H or CH3 and, when an electrophile of the general formula IV is reacted,
R1 in formula I is a structural element of the general formula V
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