A production process by which tertiary phosphine with an attached sterically bulky hydrocarbon group is produced in a high yield and with high purity on an industrial scale through simple and safe operations by allowing a dialkylphosphinous halide to react with a Grignard reagent in the presence of a copper compound in an amount corresponding to 0.1 to 5% by mol based on the dialkylphosphinous halide to produce tertiary phosphine represented by the following formula (3):
wherein R
1
and R
2
are each a tertiary hydrocarbon group of 4 to 13 carbon atoms, and R
3
is an alkyl group, an alkenyl group, an aryl group or the like.
通过简单和安全的操作,在存在
铜化合物的情况下,允许二烷基
膦酸卤化物与
格氏试剂反应,产生带有立体位阻碍的碳氢基团的三级
膦酸产物,高产率和高纯度地在工业规模上生产,其中
铜化合物的用量相当于以二烷基
膦酸卤化物为基础的0.1至5%摩尔。所述三级
膦酸的
化学式(3)如下:其中R1和R2分别是4至13个碳原子的三级烃基,R3是烷基,烯基,芳基或类似物。