Asymmetric Deprotonation−Substitution of <i>N</i>-Pop-benzylamines Using [RLi/(−)-Sparteine]. Enantioselective Sequential Reactions and Synthesis of N-Heterocycles
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Pop-directed asymmetric deprotonation of benzylic amines using [n-BuLi/(−)-sparteine] provides an efficient method for the synthesis of chiral NCα and NCα,α′ derivatives with total selectivity with respect to competing allylic and ortho lithiation. The method described herein offers a straightforward route of accessing chiral N-Pop-protected nitrogen heterocycles.
创建时间：
2008-08-07
