Catalytic Kinetic Resolution of Cyclic Secondary Amines
作者:Michael Binanzer、Sheng-Ying Hsieh、Jeffrey W. Bode
DOI:10.1021/ja209472h
日期:2011.12.14
The catalytic resolution of racemic cyclic amines has been achieved by an enantioselective amidation reaction featuring an achiral N-heterocyclic carbene catalyst and a new chiral hydroxamic acid cocatalyst working in concert. The reactions proceed at room temperature, do not generate nonvolatile byproducts, and provide enantioenriched amines by aqueous extraction.
A Robust, Recyclable Resin for Decagram Scale Resolution of (<i>±</i>
)-Mefloquine and Other Chiral N-Heterocycles
作者:Imants Kreituss、Kuang-Yen Chen、Simon H. Eitel、Jean-Michel Adam、Georg Wuitschik、Alec Fettes、Jeffrey W. Bode
DOI:10.1002/anie.201509256
日期:2016.1.22
have been produced via kinetic resolution of racemic mefloquine using a ROMP‐gel supported chiral acyl hydroxamic acid resolving agent. The requisite monomer was prepared in a few synthetic steps without chromatography and polymerization was safely performed on a >30 gram scale under ambient conditions. The reagent was readily regenerated and reused multiple times for the resolution of 150 grams of (±)‐mefloquine
[EN] KINETIC RESOLUTION OF CHIRAL AMINES<br/>[FR] RÉSOLUTION CINÉTIQUE D'AMINES CHIRALES
申请人:ETH ZUERICH
公开号:WO2013007371A2
公开(公告)日:2013-01-17
The present invention refers to a method for the kinetic resolution of a chiral primary or secondary amine by treating the amine with a chiral, hydroxamic acid derived reagent of the formula (I). These chiral reagents are particularly useful for the kinetic resolution of cyclic amines and may be generated in situ in the presence of an N-heterocyclic carbene, thus allowing for a catalytic reaction.