| 摘要 |
Phosphonium salts, a process for the preparation thereof and use thereof The present invention relates to phosphonium salts of the formula (I) <IMG> ( I ), in which Ar-Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, each CH2 group is arranged in the ortho position to the Ar-Ar bond, R is F, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms, n is an integer from 0 to 4, R1 and R2 are identical or different and, independently of each other, are an alkyl radical having 1 to 10 carbon atoms, a cycloaliphatic radical having 5 to 10 carbon atoms, or are a radical Ar1-(R3)m, where Ar1 is a phenyl or naphthyl radical, R3 is F, C1, CF3, SO3H, SO3Me (Me = Li, Na or K), a dialkylamino radical having 2 to 8 carbon atoms, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms and m is an integer from 0 to 5, or R1 and R2 together with the P atom form a ring having 4 to 8 members to which may be fused one or two aromatic rings or ring systems including 6 to 10 carbon atoms and X- is a monovalent anion or the equivalent of a polyvalent anion of a mineral acid, carboxylic acid, sulfonic acid or an alcohol. The invention further relates to a process for the preparation of the phosphonium salts and use thereof.
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