作者:Aurpon W. Mitra、Marvin M. Hansen、Michael E. Laurila、Stanley P. Kolis、Joseph R. Martinelli
DOI:10.1016/j.tetlet.2013.09.099
日期:2013.11
α-Aminoamides are shown to be useful as ligands in Goldberg amidations. A number of α-aminoamides are examined and the importance of substitution on the α-aminoamides is explored. Acetamide is focused on as the nucleophilic coupling partner due to its low cost, stability and convenience as a protecting group. The initial substrate scope for these catalysts is explored and includes electronically activated
A New Class of Amide Ligands Enable Cu-Catalyzed Coupling of Sodium Methanesulfinate with (Hetero)aryl Chlorides
作者:Dawei Ma、Songtao Niu、Jinlong Zhao、Xi Jiang、Yongwen Jiang、Xiaojing Zhang、Tiemin Sun
DOI:10.1002/cjoc.201700477
日期:2017.11
((2S,4R)‐4‐Hydroxy‐N‐(2‐methylnaphthalen‐1‐yl)pyrrolidine‐2‐carboxamide (HMNPC), an amidederivedfrom 4‐hydroxy‐L‐proline and 2‐methyl naphthalen‐1‐amine, is a powerful ligand for Cu‐catalyzed coupling of (hetero)aryl halides with sulfinic acidsalts, allowing for first time the metal‐catalyzed coupling of (hetero)aryl chlorides and NaSO2Me. A considerable number of (hetero)aryl chlorides worked well
A Class of Amide Ligands Enable Cu-Catalyzed Coupling of (Hetero)aryl Halides with Sulfinic Acid Salts under Mild Conditions
作者:Jinlong Zhao、Songtao Niu、Xi Jiang、Yongwen Jiang、Xiaojing Zhang、Tiemin Sun、Dawei Ma
DOI:10.1021/acs.joc.8b00888
日期:2018.6.15
The amidederivedfrom 4-hydroxy-l-proline and 2,6-dimethylaniline is a powerful ligand for Cu-catalyzed coupling of (hetero)aryl halides with sulfinic acidsalts, allowing the formation of a wide range of (hetero)aryl sulfones from the corresponding (hetero)aryl halides at considerably low catalytic loadings. The coupling of (hetero)aryl iodides and sodium methanesulfinate proceeds at room temperature
Simple proline-derived anilide-catalyzed asymmetric -intramolecular Michael reaction was described. Chiral cyclic keto-aldehydes were obtained from acyclic formyl enones in excellent yields with good stereoselectivity. The reaction proceeded in exceptionally fast with a commercially available proline anilide. On the other hand, the longer reaction time conduced toward the higher -diastereoselectivity