Enantioselective α-Arylation of Carbonyls via Cu(I)-Bisoxazoline Catalysis
摘要:
The enantioselective alpha-arylation of both lactones and acyl oxazolidones has been accomplished using a combination of diaryliodonium salts and copper catalysis. These mild catalytic conditions provide a new strategy for the enantioselective construction and retention of enolizable alpha-carbonyl benzylic stereocenters, a valuable synthon for the production of medicinal agents.
Selective Cross‐Ketonization of Carboxylic Acids Enabled by Metallaphotoredox Catalysis
作者:Andrew Whyte、Tehshik P. Yoon
DOI:10.1002/anie.202213739
日期:2022.12.23
Unsymmetrical ketones can be prepared through selective coupling of two structurally distinct carboxylic acids without the need for preactivation of either partner. This photoredox cross-ketonization strategy exploits differences in the rates of key one- and two-electron activation steps using the two reactants.