Intramolecular N–H insertion of α-diazocarbonyls catalyzed by Cu(acac)2: An efficient route to derivatives of 3-oxoazetidines, 3-oxopyrrolidines and 3-oxopiperidines
Visible light mediated reductions of ethers, amines and sulfides
作者:Timothy M. Monos、Gabriel Magallanes、Leanne J. Sebren、Corey R.J. Stephenson
DOI:10.1016/j.jphotochem.2016.05.014
日期:2016.9
Visible light-mediated photoredox catalysis enables the chemoselective reduction of activated carbon–heteroatom bonds as a function of reduction potential. The expansion of the scope of C–X bond reductions towards less activated motifs, such as ethers, amines and sulfides, is important to both organic synthesis and macromolecular degradation method development. In the present report, exploration of
Controllable access to multi-substituted imidazoles via palladium(<scp>ii</scp>)-catalyzed C–C coupling and C–N condensation cascade reactions
作者:Haihua Yu、Li Xiao、Xicheng Yang、Liming Shao
DOI:10.1039/c7cc05315k
日期:——
A novel and efficient protocol for the synthesis of various 2, 4-disubstituted, 1, 2,4-trisubstituted and 1, 2, 4, 5-tetra-substituted imidazoles at will via cascade palladium catalyzed C-C coupling followed by intramolecular C-N bond formation was developed. Readily accessible boronic acids and N-substituted-2-amino-acetonitriles were firstly reported as starting materials to construct di-, tri-,