Planar-Chiral Cyclopentadienyl-Ruthenium-Catalyzed Regio- and Enantioselective Asymmetric Allylic Alkylation of Silyl Enolates under Unusually Mild Conditions
作者:Naoya Kanbayashi、Arisa Yamazawa、Koichiro Takii、Taka-aki Okamura、Kiyotaka Onitsuka
DOI:10.1002/adsc.201500970
日期:2016.2.18
report the asymmetric allylic alkylation of allylic chlorides with silyl enolates as a carbon nucleophile using a planar‐chiral cyclopentadienyl‐ruthenium (Cp′Ru) catalyst. The reaction proceeds under unusually mild conditions to give the desired branched products with complete regioselectivity and high enantioselectivity, and reactive functional groups, such as aldehyde, can be tolerated. In this reaction
我们报道了使用平面手性环戊二烯基钌(Cp'Ru)催化剂与烯丙基甲硅烷基化物作为碳亲核体的烯丙基氯化物的不对称烯丙基烷基化反应。反应在异常温和的条件下进行,得到具有完全区域选择性和高对映选择性的所需支链产物,并且可以耐受诸如醛的反应性官能团。在该反应体系中,Cp'Ru在活化烯丙基甲硅烷基酯和烯丙基氯中都起着重要的作用。