申请人:Hoechst Aktiengesellschaft
公开号:US05767317A1
公开(公告)日:1998-06-16
The present invention relates to a process for preparing 2,2'-bis(diphenylphosphinylmethyl)-1,1'-binaphthyls by reacting a reaction mixture prepared in a solvent by reaction of 2,2'-dimethyl-1,1'-binaphthyl with a brominating agent to produce a mixture comprising 2,2'-bis(bromomethyl)-1,1'-binaphthyl and further brominated binaphthyls and optionally further comprising unreacted brominating agent, reacted brominating agent and solvent, with an alkyl diphenylphosphinite of the formula RO--P(Ph--(R').sub.n).sub.2, where R is an alkyl radical having from 1 to 5 carbon atoms, Ph is phenyl, R' is an alkyl radical having from 1 to 4 carbon atoms, CF.sub.3, fluorine, chlorine or bromine and n is 0, 1 or 2, at from 70.degree. to 180.degree. C. optionally in the presence of a further solvent.
本发明涉及一种制备2,2'-双(二苯基膦酰甲基)-1,1'-联萘的过程,通过将2,2'-二甲基-1,1'-联萘与溴化剂反应,制备出包含2,2'-双(溴甲基)-1,1'-联萘和进一步溴化的联萘混合物,可选地包括未反应的溴化剂、反应后的溴化剂和溶剂,然后与式为RO-P(Ph-(R').sub.n).sub.2的烷基二苯基膦酸酯反应,其中R是具有1至5个碳原子的烷基基团,Ph是苯基,R'是具有1至4个碳原子、CF.sub.3、氟、氯或溴的烷基基团,n为0、1或2,在70℃至180℃之间进行,可选地在进一步溶剂的存在下进行。