Synthesis, extraction ability and application in asymmetric synthesis of azacrown ethers derived from D-glucose
作者:Péter Bakó、Kristóf Vízvárdi、Suzanne Toppet、Erik Van der Eycken、Georges J. Hoornaert、László Tõke
DOI:10.1016/s0040-4020(98)00938-7
日期:1998.12
A number of new chiral monoaza-15-crown-5 derivatives (4–9) and lariat ethers (10–15) anellated to phenyl-β-D-glucopyranoside have been synthesized. Their extracting ability was measured with alkali metal (Li, Na, K) and ammonium cations. The derivatives show significant asymmetric induction as phase transfer catalysts in the Michael addition of 2-nitropropane to chalcone (82% ee) although in low yield