The present invention relates to a method for preparing di-α-chiral and achiral di(sec. alkyl)phosphines of general formula Ia or Ib
which is characterized in that sulfonates of general formula IIa or IIc or sulfates of general formula IIb or IId, are reacted with M3P, wherein M is selected from Li, Na, K, and mixtures thereof, preferably Na.
The secondary phosphines obtained are useful precursors for the preparation of tertiary phosphines and diphosphines.
本发明涉及一种制备一般式Ia或Ib的二α-手性和无手性二(次烷基)膦化合物的方法,其特征在于将一般式IIa或IIc的
磺酸盐或一般式IIb或IId的
硫酸盐与M3P反应,其中M选自Li、Na、K及其混合物,优选为Na。
所得的二次膦化合物是制备三次膦化合物和
二膦化合物的有用前体。