An approach to chemoenzymatic DKR of amines in Soxhlet apparatus
作者:Denys Mavrynsky、Reko Leino
DOI:10.1016/j.jorganchem.2013.11.005
日期:2014.6
thermolabile enzyme and metal catalyst for racemization of amines in chemoenzymatic dynamic kinetic resolution, requiring high temperature of operation, is enabled by carrying out the reaction in modifiedSoxhlet extraction system. Initial insights into the scope and limitations of the developed reaction system are discussed.
Solvent-free kinetic resolution of primary amines catalyzed by Candida antarctica lipase B: effect of immobilization and recycling stability
作者:Mari Päiviö、Päivi Perkiö、Liisa T. Kanerva
DOI:10.1016/j.tetasy.2012.02.008
日期:2012.2
Highly enantioselective (E >200) N-acylation of nine racemic primary amines with isopropyl methoxyacetate in the presence of CandidaantarcticalipaseB (Novozym 435) has been reported to yield the unreacted (S)-amines (ee ⩾98%) and produced the (R)-amides (ee ⩾95%) at 50% conversion under solvent-free conditions. One of the amines and the acyl donor have been used in an equimolar ratio at room temperature
Chemoenzymatic Dynamic Kinetic Resolution of Primary Benzylic Amines using Pd
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‐CalB CLEA as a Biohybrid Catalyst
作者:Karl P. J. Gustafson、Tamás Görbe、Gonzalo de Gonzalo‐Calvo、Ning Yuan、Cynthia L. Schreiber、Andrey Shchukarev、Cheuk‐Wai Tai、Ingmar Persson、Xiaodong Zou、Jan‐E. Bäckvall
DOI:10.1002/chem.201901418
日期:2019.7.11
Herein, we report on the use a biohybrid catalyst consisting of palladium nanoparticles immobilized on cross‐linked enzyme aggregates of lipase B of Candidaantarctica (CalB CLEA) for the dynamickineticresolution (DKR) of benzylic amines. A set of amines were demonstrated to undergo an efficient DKR and the recyclability of the catalysts was studied. Extensive efforts to further elucidate the structure
Artificial plant cell walls as multi-catalyst systems for enzymatic cooperative asymmetric catalysis in non-aqueous media
作者:Luca Deiana、Abdolrahim A. Rafi、Veluru Ramesh Naidu、Cheuk-Wai Tai、Jan-E. Bäckvall、Armando Córdova
DOI:10.1039/d1cc02878b
日期:——
cellulose-based artificial plant cell wall (APCW) structures that contain different types of catalysts is a powerful strategy for the development of cascade reactions. Here we disclose an APCW catalytic system containing a lipase enzyme and nanopalladium particles that transform a racemic amine into the corresponding enantiomerically pure amide in high yield via a dynamic kinetic resolution.