Access to β‐Ketonitriles through Nickel‐Catalyzed Carbonylative Coupling of α‐Bromonitriles with Alkylzinc Reagents
作者:Aske S. Donslund、Karoline T. Neumann、Nicklas P. Corneliussen、Ebbe K. Grove、Domenique Herbstritt、Kim Daasbjerg、Troels Skrydstrup
DOI:10.1002/chem.201902206
日期:2019.7.25
Herein, we report a nickel‐catalyzed carbonylative coupling of α‐bromonitriles and alkylzinc reagents with near stoichiometric carbon monoxide to give β‐ketonitriles in good yields. The reaction is catalyzed by a readily available and stable nickel(II) pincercomplex. The developed protocol tolerates substrates bearing a variety of functional groups, which would be problematic or incompatible with
作者:Fraser F. Fleming、Wang Liu、Somraj Ghosh、Omar W. Steward
DOI:10.1021/jo702681e
日期:2008.4.1
accounts for comparable ester alkylations affording the opposite diastereomer! The intensive survey of metalated nitrile alkylations identifies the key structural features required for high 1,2-asymmetricinduction, addresses the long-standing challenge of asymmetric alkylations with acylic metalated nitriles, and provides a versatile method for installing hindered quaternary centers with excellent stereocontrol