| 摘要 |
The invention relates to a process for preparing phosphines <IMG> (I) where, for example R1 is (C1-C10)alkyl, (C3-C10)cycloalkyl, C(YZ)aryl Y, Z is (C1-C4)alkyl, hydrogen, Aryl is phenyl, naphthyl, anthracenyl, phenanthrenyl, or biphenyl, binaphthyl and R2, R3 are, independently of one another, phenyl, naphthyl or anthracenyl, by reacting a diarylphosphine <IMG> (II) where X is bromine, chlorine, fluorine, (C1-C4)alkoxy, O-phenyl, with a reducing agent and a quaternary ammonium compound <IMG> (III) where A is an anion of an organic or inorganic acid.
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