Visible-Light-Induced Radical Acylation of Imines with α-Ketoacids Enabled by Electron-Donor–Acceptor Complexes
作者:Hong-Hao Zhang、Shouyun Yu
DOI:10.1021/acs.orglett.9b01169
日期:2019.5.17
radical acylation of imines with α-ketoacids has been achieved, enabled by an electron-donor–acceptor (EDA) complex. This EDA complex-mediated process eradicates the use of a photocatalyst. Visiblelight is used as the sole promoter for this reaction, and CO2 is the only side product. Substrates with amide, cyanide, ester, ether, halides, and heterocycles were compatible. This radical acylation allows
Highly Stereoselective Synthesis of<font>β</font>-Amino Ketones via a Mannich Reaction Catalyzed by Cellulose Sulfuric Acid as a Biodegradable, Efficient, and Recyclable Heterogeneous Catalyst
Abstract The efficient use of cellulose sulfuric acid as a heterogeneouscatalystpromotes three-component, one-pot Mannich reaction of various ketones, aromatic aldehydes, and aromatic amines in ethanol to make the corresponding β-amino ketones with high stereoselectivity in favor of the anti-isomer. This protocol has several advantages such as good yield, mild reaction conditions, no environmental
Thiazolium-derived N-heterocyclic carbene-catalyzed cross-coupling of aldehydes with unactivated imines
作者:Gong-Qiang Li、Li-Xin Dai、Shu-Li You
DOI:10.1039/b611646a
日期:——
Cross-coupling of aromatic aldehydes or benzoins with unactivated imines catalyzed by an N-heterocyclic carbene (NHC) affords α-amino ketones smoothly.