手性离子液:新型高效的手性有机小分子催化剂

来源 :中国基础科学 | 被引量 : 0次 | 上传用户:setsail2008
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Asymmetric organocatalysts has been increasingly recognized as an important green alternative the highly-developed asymmetric transition metal catalysis and biotransformation. However, organocatalysis is just in its infancy and has many limitations such low efficiency and limited substrate scopes. We presented herein a novel strategy to address the above challenges by incorporating ionic-liquid moieties as building blocks for organocatalysts. The chiral ionic-liquid (CIL) organocatalysts still maintained the unique properties of ionic liquid, and meanwhile, served as efficient catalyst for judiciously selected reactions. The CIL organocatalysts were shown to be highly efficient and stereoselective catalysts for asymmetric Michael additions. By simple swap of the ionic liquid anion with a surfactant anion, a highly efficient catalysis was realized for the first time in pure water. Asymmetric organocatalysts has been increasingly recognized as an important green alternative the highly-developed asymmetric transition metal catalysis and biotransformation. However, organocatalysis is just in its infancy and has many limitations such low efficiency and limited substrate scopes. We present herein a novel strategy to address the above challenges by incorporating ionic-liquid moieties as building blocks for organocatalysts. The chiral ionic-liquid (CIL) organocatalysts still maintained the unique properties of ionic liquid, and meanwhile, served as efficient catalyst for judiciously selected reactions. The CIL organocatalysts were shown To be highly efficient and stereoselective catalysts for asymmetric Michael additions. By simple swap of the ionic liquid anion with a surfactant anion, a highly efficient catalysis was realized for the first time in pure water.
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