Well-defined (N-heterocyclic carbene)–Ag(i) complexes as catalysts for A3 reactions
作者:Ming-Tsz Chen、Brant Landers、Oscar Navarro
DOI:10.1039/c2ob06900h
日期:——
The use of well-defined (N-heterocyclic carbene)âAg(I) complexes for the A3 reaction allows for the coupling of unactivated aldehydes at room temperature and very short reaction times.
作者:Qi Li、Anindita Das、Shuxin Wang、Yuxiang Chen、Rongchao Jin
DOI:10.1039/c6cc07825g
日期:——
The Au38(SC2H4Ph)24 nanocluster catalyzes the A3 coupling reaction with a turnover frequency significantly higher than those of conventional nanogold catalysts.
Au38(SC2H4Ph)24纳米团簇催化A3偶联反应的周转频率明显高于传统纳米金催化剂。
Impregnated copper on magnetite: an efficient and green catalyst for the multicomponent preparation of propargylamines under solvent free conditions
作者:María J. Aliaga、Diego J. Ramón、Miguel Yus
DOI:10.1039/b917923b
日期:——
Impregnated copper on magnetite is a versatile, inexpensive and simple catalyst for the selective multicomponent reaction of terminal alkynes, aldehydes and secondary amines to give the corresponding propargylamines with excellent yields. The catalyst can be easily recovered and reused by using a simple magnet. The process could be repeated up to ten times without losing its activity.
N-Heterocyclic Carbene (NHC)-Copper(I) Complexes as Catalysts for A3 Reactions
作者:Oscar Navarro、Ming-Tsz Chen
DOI:10.1055/s-0033-1338944
日期:——
The use of easily synthesized NHC-Cu(I) complexes for the preparation of a variety of propargylamines through an A(3) coupling scheme is described.
Synthesis of<i>N</i>,<i>N</i>-Disubstituted 3-Amino-1,4-diynes and 3-Amino-1-ynes by Addition of Alkynyldimethylaluminum Reagents to<i>N</i>,<i>N</i>-Disubstituted Formamides and N,O-Acetals
作者:Balaji L. Korbad、Sang-Hyeup Lee
DOI:10.1002/ejoc.201402464
日期:2014.8
A range of alkynyldimethylaluminum reagents were added to N,N‐disubstituted formamides and the their acetals to provide the corresponding N,N‐disubstituted 3‐amino‐1,4‐diynes. Also, these reagents smoothly underwent the addition to N,O‐acetals to give the corresponding N,N‐disubstituted 3‐amino‐1‐ynes.