A new method for the synthesis of(R,R)-1,2-bis[(2-methoxyphenyl)phenylphosphino]ethane was developed.Basing on the reaction of Arbuzov rearrangement,methyl methylphenylphosphinate,which was obtained from dichlorophenylphosphine and methyl alcohol,reacted with phosphorus pentachloride to form methylphenylphosphinic chloride.Methylphenylphosphinic chloride successively reacted with oxazolidinone 5 and then with 2-methoxyphenylmagnesiumbromide to get(S)-(2-methoxypheny)methylphenylphosphine oxide as a single c...