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 i...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.展开更多
文摘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.
