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Fast DKR of amines using isopropyl 2-methoxyacetate as acyl donor
KTH, Skolan för bioteknologi (BIO), Biokemi.
2007 (engelsk)Inngår i: European Journal of Organic Chemistry, ISSN 1434-193X, E-ISSN 1099-0690, nr 32, s. 5416-5421Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The dynamic kinetic resolution (DKR) of various primary amine substrates was performed using a modified version of the Backvall system. A single equivalent of isopropyl 2-methoxyacetate was used as acyl donor in combination with p-MeO Shvo complex as the racemization catalyst and Novozym 435 as the acylation catalyst. A reaction temperature of 100 degrees C was employed to ensure a high racemization rate. Adding 2,4-dimethyl-3-pentanol (DMP) as hydrogen donor at a concentration of 0.5 m successfully suppressed side product formation. Under these modified DKR conditions, complete conversion was observed for most substrates within 26 It showing both high ee values and good chemoselectivity, whereas the original system required a reaction time of 72 h. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007).

sted, utgiver, år, opplag, sider
2007. nr 32, s. 5416-5421
Emneord [en]
dynamic kinetic resolution (DKR), amines, enzyme catalysis, asymmetric synthesis, ruthenium, dynamic kinetic resolution, ambient-temperature, catalytic racemization, secondary alcohols, ruthenium, efficient, lipase, pd
Identifikatorer
URN: urn:nbn:se:kth:diva-17120DOI: 10.1002/ejoc.200700568ISI: 000251009900013Scopus ID: 2-s2.0-36148996148OAI: oai:DiVA.org:kth-17120DiVA, id: diva2:335163
Merknad
QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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