| 摘要 |
A process for preparing phosphonium salts of the general formula Iin which the substituents have the following meanings, independently of one another:R aryl;X anion of an organic or inorganic acid selected from the group consisting of hydrohalic acids, sulfuric acid, sulfonic acids, phosphoric acid and C1-C6-alkanoic acids,by reacting 3,7,11-trimethyldodeca-1,4,6,10-tetraen-3-ol of the formula IIwith triarylphosphane and organic or inorganic acids selected from the abovementioned group, wherein in a two-stage processa) initially a tertiary phosphonium salt of the formula III in which the radicals R and X have the abovementioned meanings, is prepared at temperatures in the range from -20 to 40° C., andb) the tertiary phosphonium salt of the formula III which is formed is rearranged to the primary phosphonium salt of the formula I at temperatures in the range from 40 to 100° C.
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