848926-12-5Relevant articles and documents
Chemo- and Enantioselective Addition and β-Hydrogen Transfer Reduction of Carbonyl Compounds with Diethylzinc Reagent in One Pot Catalyzed by a Single Chiral Organometallic Catalyst
Huang, Huayin,Zong, Hua,Bian, Guangling,Song, Ling
, p. 12614 - 12619 (2016/01/09)
Using a single chiral phosphoramide-Zn(II) complex as the catalyst, the asymmetric β-H transfer reduction of aromatic α-trifluoromethyl ketones and enantioselective addition of aromatic aldehydes with Et2Zn in one pot were successfully realized, affording the corresponding additive products of secondary alcohols in high yields (up to 99%) with excellent enantioselectivities (up to 98% ee) and the reduction products of α-trifluoromethyl alcohols in good to excellent yields with up to 77% ee.
Development of an Immobilized Ketoreductase for Enzymatic (R)-1-(3,5-Bis(trifluoromethyl)phenyl)ethanol Production
Li, Hongmei,Moncecchi, Johannah,Truppo, Matthew D.
, p. 695 - 700 (2015/07/27)
The development of an immobilized ketoreductase via covalent binding on resin EC-HFA has demonstrated that it is highly active and stable in organic solvents and can be recycled and reused many times in both batch mode and flow reactor mode. (R)-1-(3,5-Bi
Asymmetric hydrosilylation of ketones catalyzed by complexes formed from trans-diaminocyclohexane-based diamines and diethylzinc
Gajewy, Jadwiga,Gawronski, Jacek,Kwit, Marcin
experimental part, p. 1045 - 1054 (2012/09/22)
Chiral acyclic and macrocyclic amines derived from trans-1,2- diaminocyclohexane in complexes with diethylzinc efficiently catalyze asymmetric hydrosilylation of aryl-alkyl and aryl-aryl ketones with enantiomeric excess of the product up to 86 %. A trianglamine ligand with a cyclic structure or the presence of an additional coordinating group increases the enantioselectivity of the reaction, in comparison with catalysis by a simple acyclic N,N′-dibenzyl-1,2-diaminocyclohexane ligand. In addition, the effect of the asymmetric activation of the catalyst by a variety of alcohols and diols is studied.