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Direct Allylation of Aldimines Catalyzed by C2-Symmetric N,N-DioxideCScIII Complexes: Highly Enantioselective Synthesis of Homoallylic Amines

机译:C2对称N,N-DioxideCScIII配合物催化的Aldimines的直接烯丙基化:高度均一的胺代烯丙基胺的合成

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摘要

Optically active homoallylic amines are useful intermediates for the preparation of bioactive natural products and relevant compounds.[1] The asymmetric allylation of imines provides direct access to them and considerable efforts have been devoted to devising enantioselective versions of this transformation.[2C4] Among these methods,catalytic asymmetric allylation of imines,as a more efficient method,has made significant progress.[5C8] Despite these creative efforts, the development of new methods,the design and synthesis of new catalysts remain considerable challenge. Simplified and environmentally friendly multicomponent strategy[9] has been successfully adopted in the synthesis of racemic homoallylic amines.[10] Herein,we reported an efficient catalytic asymmetric direct allylation of aldimines promoted by readily accessible and tuneable C2-symmetric N,N-dioxide-ScIII complexes under mild conditions.
机译:旋光均胺是制备生物活性天然产物和相关化合物的有用中间体。[1]亚胺的不对称烯丙基化提供了直接访问它们的途径,并且已经投入了巨大的努力来设计这种转化的对映选择性形式。[2C4]在这些方法中,亚胺的催化不对称烯丙基化作为一种​​更有效的方法,已经取得了重大进展。[5C8尽管有这些创造性的努力,但是新方法的开发,新催化剂的设计和合成仍然是相当大的挑战。简化的环保多组分策略[9]已成功地用于外消旋均烯丙基胺的合成。[10]本文中,我们报道了在温和条件下,易于获得和可调节的C2对称N,N-二氧化物-ScIII配合物促进的高效亚胺亚胺催化不对称直接烯丙基化。

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