A From Halogenophosphine and Organometallic Reagent

From Halogenophosphine and Organometallic Reagent.—Mesityl-magnesium bromide reacts with chlorodiethylphosphine and dichloroethyl-phosphine at — 10 °C in THF to yield mesityldiethylphosphine and dimesitylethylphosphine respectively.  

Bis(diphenylphosphino)methyl-lithium, from methyl-lithium and bis-(diphenylphosphino)methane, gave the compound (1) with chlorodiphenyl-phosphine.  

The six isomeric tris(methylthienyl)phosphines, e.g. (2), have been prepared by the reaction of methylthienyl-lithium derivatives with phosphorus tribromide.  

Arylaluminium compounds (3) are obtained from the reaction of diphenylphosphine and triarylaluminiums.  

The trimethylstannyl grouping in the phosphine (4) is replaced by diphenylphosphino upon reaction with chlorodiphenylphosphine.  

---