作者:Michael Widhalm、Christian Aichinger、Kurt Mereiter
DOI:10.1016/j.tetlet.2009.03.008
日期:2009.5
ortho-lithiation protocol of 2,2′-dibromo-1,1′-binaphthyl four tetrasubstituted binaphthyls, 2,2′-dibromo-3,3′-diiodo-, 3,3′-dibromo-2,2′-diiodo-, 2,2′,3,3′-tetrabromo-, and 2,2′,3,3′-tetraiodo-1,1′-binaphthyls have been prepared in excellent yield which in turn proved to be versatile key intermediates in the synthesis of various 2,2′,3,3′-tetrasubstituted 1,1′-binaphthyl derivatives.
基于2,2'-dibromo-1,1'-binaphthyl的邻位锂化方案,四个四取代的biaphthyls,2,2'-dibromo-3,3'-diiodo-,3,3'-dibromo-2,2已以优异的产率制备了'-二碘-,2,2',3,3'-四溴-和2,2',3,3'-四碘-1,1'-联萘,进而证明了其用途广泛合成各种2,2',3,3'-四取代1,1'-联萘衍生物的关键中间体。