A Very Active Cu-Catalytic System for the Synthesis of Aryl, Heteroaryl, and Vinyl Sulfides
作者:M. Shahjahan Kabir、Michael Lorenz、Michael L. Van Linn、Ojas A. Namjoshi、Shamim Ara、James M. Cook
DOI:10.1021/jo1004179
日期:2010.6.4
facilitated the Cu-catalyzed cross-coupling reactions of alkyl, aryl, or heterocyclic thiols with either alkyl, aryl, heterocyclic, or substituted vinyl halides. This new catalytic system promoted the mild and efficient stereo- and regiospecific synthesis of biologically important vinyl sulfides. The yields obtained using electron-rich substituted vinyl sulfides with this catalyst system are generally
顺式-1,2-环己二醇(L3)已被证明是一种高效且通用的双齿O-供体配体,可提供高活性的Cu催化体系。它比诸如反式-1,2-环己二醇或乙二醇之类的二醇更有效。这种市售的顺式-1,2-环己二醇配体有助于烷基,芳基或杂环硫醇与烷基,芳基,杂环或取代的乙烯基卤化物的Cu催化交叉偶联反应。这种新的催化体系促进了生物学上重要的乙烯基硫化物的温和,高效的立体和区域特异性合成。使用富电子取代的乙烯基硫化物在该催化剂体系中获得的产率通常为75-98%。最重要的是,这种奇异的催化剂体系用途极为广泛,可用于多种硫化物。鉴于其温和的反应条件,简便,通用性和卓越的官能团耐受性,该方法尤其值得一提。