Practical chemoenzymatic dynamic kinetic resolution of primary amines via transfer of a readily removable benzyloxycarbonyl group
作者:Christine E. Hoben、Lisa Kanupp、Jan-E. Bäckvall
DOI:10.1016/j.tetlet.2007.12.017
日期:2008.2
A practical method for chemoenzymatic dynamic kinetic resolution of primary amines using dibenzyl carbonate as acyl donor has been developed leading to benzyl carbamates, which can be deprotected under very mild reaction conditions to give the free amine. (c) 2007 Elsevier Ltd. All rights reserved.
A Chemoenzymatic Approach to Enantiomerically Pure Amines Using Dynamic Kinetic Resolution: Application to the Synthesis of Norsertraline
作者:Lisa K. Thalén、Dongbo Zhao、Jean-Baptiste Sortais、Jens Paetzold、Christine Hoben、Jan-E. Bäckvall
DOI:10.1002/chem.200802303
日期:2009.3.23
Dynamic transformation: A racemization catalyst and the enzyme Candida antarctica lipase B (CALB) were combined in a one‐pot dynamic kineticresolution (DKR) of primary amines, which were transformed to their corresponding amides in up to 95 % yield and >99 % ee. This chemoenzymatic DKR was also applied to the synthesis of norsertraline (see scheme).