Application of a C2-symmetric copper carbenoid in the enantioselective hydrosilylation of dialkyl and aryl-alkyl ketones.
Application of a C2-symmetric copper carbenoid in the enantioselective hydrosilylation of dialkyl and aryl-alkyl ketones.
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C2对称铜carbenoid在二烷基和芳基 - 烷基酮的对映选择性水硅烷化中的应用。
DOI:
10.1021/ja209187a
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发表时间:
2011-12-14
影响因子:
15
通讯作者:
Gawley, Robert E.
中科院分区:
文献类型:
--
作者:
Albright, Abigail;Gawley, Robert E.
We report excellent reactivity and enantioselectivity of a C2-symmetric copper-bound N-heterocyclic carbene (NHC) in the hydrosilylation of a variety of structurally diverse ketones. This catalyst exhibits extraordinary enantioselctivity in the reduction of such challenging substrates as 2-butanone and 3-hexanone. Even at low catalyst loading (2.0 mol%) the reactions occur in under an hour at room temperature and often do not require purification beyond catalyst and solvent removal. The scope of this transformation was investigated in the reduction of ten aryl-alkyl and alkyl-alkyl ketones.
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