1373832-85-9Relevant articles and documents
Solvent-free kinetic resolution of primary amines catalyzed by Candida antarctica lipase B: Effect of immobilization and recycling stability
Paeivioe, Mari,Perkioe, Paeivi,Kanerva, Liisa T.
, p. 230 - 236 (2012)
Highly enantioselective (E >200) N-acylation of nine racemic primary amines with isopropyl methoxyacetate in the presence of Candida antarctica lipase B (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 (23 °C). Under the reaction conditions, the reuse stability of Novozym 435 with 1-phenylethylamine (as a model compound) has been shown to be poor while somewhat improved stability has been observed with an in-house prepared sol-gel CAL-B catalyst.
Chemoenzymatic Dynamic Kinetic Resolution of Primary Benzylic Amines using Pd0-CalB CLEA as a Biohybrid Catalyst
Gustafson, Karl P. J.,G?rbe, Tamás,de Gonzalo-Calvo, Gonzalo,Yuan, Ning,Schreiber, Cynthia L.,Shchukarev, Andrey,Tai, Cheuk-Wai,Persson, Ingmar,Zou, Xiaodong,B?ckvall, Jan-E.
supporting information, p. 9174 - 9179 (2019/07/04)
Herein, we report on the use a biohybrid catalyst consisting of palladium nanoparticles immobilized on cross-linked enzyme aggregates of lipase B of Candida antarctica (CalB CLEA) for the dynamic kinetic resolution (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 of the catalyst are presented.