Ni-Catalyzed Regioselective Hydrocarboxylation of Alkynes with CO2 by Using Simple Alcohols as Proton Sources
摘要:
A mild and user-friendly Ni-catalyzed regioselective hydrocarboxylation of alkynes with CO2 (1 bar) is described. This protocol is characterized by a wide scope While obviating the need for sensitive organometallic, species and by an unprecedented regioselectivity pattern using simple alcohols as proton sources.
Getting a fix: The copper‐catalyzed hydrocarboxylation of alkynes using carbon dioxide in the presence of a hydrosilane, which serves as a reducing agent, has been developed (see scheme). Copperfluorides bearing N‐heterocyclic carbene ligands such as IMes and Cl2IPr show high catalytic activities.