Hydroxy Functionalization of Non-Activated CH and CC Bonds: New Perspectives for the Synthesis of Alcohols through Biocatalytic Processes
作者:Harald Gröger
DOI:10.1002/anie.201308556
日期:2014.3.17
New perspectives through enzymes: Recent breakthroughs have been achieved in the selective hydroxy functionalization of non‐activated CH and CCbonds. Enzymes turned out to be suitable catalysts for the ω‐hydroxylation of (substituted) alkanes and regioselective hydroxylation of aromatic hydrocarbons with atmospheric oxygen as the oxidant, and the asymmetric addition of water to non‐activated alkenes
Asymmetric Enzymatic Hydration of Hydroxystyrene Derivatives
作者:Christiane Wuensch、Johannes Gross、Georg Steinkellner、Karl Gruber、Silvia M. Glueck、Kurt Faber
DOI:10.1002/anie.201207916
日期:2013.2.18
decarboxylases catalyze the regio‐ and stereoselective addition of H2O across the CC double bond of hydroxystyrenederivatives yielding (S)‐4‐(1‐hydroxyethyl)phenols with up to 82 % conversion and 71 % ee. Based on structure analysis and molecular docking simulations, a catalytic mechanism for this novel enzymatic reaction is proposed.
hydroamination of aryl alkenes to produce chiral amines. The process involves sequential alkene asymmetric hydration catalyzed by a hydratase (HD), followed by in situ oxidation of alcohol into ketone by two enantiocomplementary alcohol dehydrogenases (ADHs), and finally, enantioselective transformation of ketone into enantiomericallypure amine by a ω-transaminase (TA). The addition of lactate dehydrogenase (LDH)