Direct Access to Versatile Electrophiles via Catalytic Oxidative Cyanation of Alkenes
作者:De-Wei Gao、Ekaterina V. Vinogradova、Sri Krishna Nimmagadda、Jose M. Medina、Yiyang Xiao、Radu M. Suciu、Benjamin F. Cravatt、Keary M. Engle
DOI:10.1021/jacs.8b03704
日期:2018.7.5
discovery. Reactions that directly transform inexpensive chemical feedstocks into versatile carbon electrophiles would therefore be highly enabling. Herein, we report the catalytic, regioselective oxidative cyanation of conjugated and nonconjugated alkenes using a homogeneous copper catalyst and a bystanding N-F oxidant to furnish branched alkenyl nitriles that are difficult to prepare using existing methods
Enantioselective Synthesis of (<i>R</i>)-2-Arylpropanenitriles Catalysed by Ene-Reductases in Aqueous Media and in Biphasic Ionic Liquid-Water Systems
作者:Elisabetta Brenna、Michele Crotti、Francesco G. Gatti、Alessia Manfredi、Daniela Monti、Fabio Parmeggiani、Sara Santangelo、Davila Zampieri
DOI:10.1002/cctc.201402205
日期:2014.8
The enantioselective reduction of α‐methylene nitrile derivatives catalysed by ene‐reductases affords the corresponding (R)‐2‐arylpropanenitriles with high conversion values. The reaction is investigated either in aqueous medium (with an organic cosolvent or by loading the substrate onto hydrophobic resins) or in a biphasicionicliquid–watersystem. The use of ionic liquids, herein with isolated ene‐reductases