Facile Synthesis of Structurally Diverse 3,3'-Disubstituted 1,1'-Binaphthyl-2,2'-diamines in Optically Pure Forms.

[摘要]：A synthetic route to 3,3'-dihalo BINAMs based on the direct halogenation of H8-BINAM and subsequent rearomatization to the binaphthyl core has been developed. The combination of this procedure and Pd-catalyzed coupling reactions enabled us to synthesize various 3,3'-disubstituted BINAMs in only three steps starting from H8-BINAM.

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