Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and can be recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)phenylphosphine; a bis(6-methyl-3-sulphonatopheyl)phenylphosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.
                            本发明提供了一种在端粒化反应中具有高选择性且可高效回收的
钯催化剂用
水溶性三芳基膦及其
铵盐,以及高效生产该催化剂的方法。具体而言,提供了双(6-甲基-3-
磺酸基苯基)
苯基膦;通过将该膦与具有与一个氮原子键合的共 3 至 27 个碳原子基团的叔胺反应而获得的双(6-甲基-3-
磺酸基苯基)
苯基膦二
铵盐;以及生产上述物质的方法。