| 摘要 |
A quaternary phosphonium hydroxide, which is represented by the following general formula (II): <IMAGE> (II) wherein R1, R2, R3 and R4 mean independently an alkyl group having 1-8 carbon atoms, a phenyl group or a benzyl group, is prepared by dissolving a quaternary phosphonium halide represented by the following general formula (I): <IMAGE> (I) wherein R1, R2, R3 and R4 has the same meaning as defined above and X denotes a chlorine, bromine or iodine atom, in a solvent selected from water, lower alcohols and aqueous lower alcohols, and then bringing the resultant solution into contact with a strongly basic anion exchange resin (OH-form).
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