Three-Component Reaction of Propargyl Amines, Sulfonyl Azides, and Alkynes: One-Pot Synthesis of Tetrasubstituted Imidazoles
作者:Zheng Jiang、Ping Lu、Yanguang Wang
DOI:10.1021/ol303023y
日期:2012.12.21
An efficient and straightforward strategy for the synthesis of tetrasubstituted imidazoles from propargyl amines, sulfonylazides, and terminal alkynes is described. N-Sulfonyl ketenimine and aminoallene are believed to be the key intermediates for this two-step one-pot transformation.
A bimetallic iridium(<scp>ii</scp>) catalyst: [{Ir(IDipp)(H)}<sub>2</sub>][BF<sub>4</sub>]<sub>2</sub> (IDipp = 1,3-bis(2,6-diisopropylphenylimidazol-2-ylidene))
作者:Laura Rubio-Pérez、Manuel Iglesias、Julen Munárriz、Victor Polo、Pablo J. Sanz Miguel、Jesús J. Pérez-Torrente、Luis A. Oro
DOI:10.1039/c5cc03296b
日期:——
A new Ir(ii) complex [Ir(μ-κCNHC,η6Dipp-IDipp)(H)}2][BF4]2 acts as a catalyst for the hydroalkynylation of imines according to an unprecedented mechanism.
Sequential catalytic process: synthesis of quinoline derivatives by AuCl3/CuBr-catalyzed three-component reaction of aldehydes, amines, and alkynes
作者:Fengping Xiao、Yulin Chen、Yu Liu、Jianbo Wang
DOI:10.1016/j.tet.2008.01.046
日期:2008.3
A sequential catalytic process has been developed based on gold-catalyzed nucleophilic addition of terminal alkynes to imines, and gold-catalyzed intramolecular reaction of aromatic ring to alkynes. This one-pot reaction of aldehydes, amines, and alkynes gives quinoline derivatives in good yields.
Tuning the Reactivity of Isocyano Group: Synthesis of Imidazoles and Imidazoliums from Propargylamines and Isonitriles in the Presence of Multiple Catalysts
作者:Shuo Tong、Qian Wang、Mei-Xiang Wang、Jieping Zhu
DOI:10.1002/anie.201410113
日期:2015.1.19
tert‐butylisonitrile in the presence of a catalytic amount of both Yb(OTf)3 and AgOTf afforded imidazoles, whereas the same reaction with primary and secondary alkylisonitriles, as well as arylisonitriles, in the presence of three metal salts [Yb(OTf)3/AgOTf/KOTf] resulted in the 1,3,4,5‐tetrasubstituted imidazoliums in excellent yields. Both chiral amines and chiral isonitriles can be used to provide corresponding
A novel efficient method for synthesis of propargylamines via three-component coupling of aryl azide, aldehyde, and alkyne promoted by iron–iodine–copper(I) bromide
作者:Kui Zhang、You Huang、Ruyu Chen
DOI:10.1016/j.tetlet.2010.08.024
日期:2010.10
A novel, efficient method has been developed for the synthesis of propargylamines through a three-component coupling of aryl azides, aldehydes, and alkynes in the presence of iron–iodine–copper(I) bromide as catalyst. This method is the first example for directly using aryl azides as an amino component in a three-component coupling reaction. Some of the major advantages of this protocol are: good yields