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通过维蒂希反应合成了(S)-3-乙烯基-2,2’-甲氧甲氧基-1,1’-联萘.将单体(S)-3-乙烯基-2,2’-甲氧甲氧基-1,1’-联萘用偶氮二异丁腈作引发剂进行自由基聚合得到了聚[(S)-3-乙烯基-2,2’-二甲氧基甲氧基-1,1’-联萘].该聚合物上的MOM保护基通过酸脱除获得手性螺旋聚合物聚[(S)-3-乙烯基-2,2’-二羟基-1,1’-联萘].将手性螺旋聚合物聚[(S)-3-乙烯基-2,2’-二羟基-1,1’-联萘]与Ti(O-i-Pr)4形成的配合物应用于三乙基铝与醛的不对称加成反应中,获得了较好的对映选择性,ee值最高为85%.更重要的是,这种聚合物还可以被回收利用多次且催化活性没有明显降低.
(S) -3-vinyl-2,2’-methoxymethoxy-1,1’-binaphthyl was synthesized by Wittig reaction The monomer (S) -3-vinyl- ’- methoxymethoxy-1,1’-binaphthyl using azobisisobutyronitrile as an initiator for radical polymerization to obtain poly [(S) -3-vinyl-2,2’-dimethoxy Methoxy-1,1’-binaphthyl] The MOM protecting group on the polymer was removed by acid to obtain a chiral helical polymer of poly [(S) -3-vinyl-2,2’-dihydroxy -1,1’-binaphthyl] The chiral helical polymer poly [(S) -3-vinyl-2,2’-dihydroxy-1,1’-binaphthyl] was mixed with Ti (Oi-Pr) 4 complexes are used in the asymmetric addition of triethylaluminum to aldehydes to give better enantioselectivities with a maximum ee of 85%. More importantly, this polymer can also be used Recycled many times and no significant decrease in catalytic activity.