71053-29-7Relevant academic research and scientific papers
N-Heterocyclic Carbene-Protected Ag Nanoparticles Immobilized on Polyacrylonitrile Fiber as Efficient Catalysts for a Three-Component Coupling Reaction
Cao, Jian,Tian, Hongqi
, p. 1561 - 1569 (2018)
Metal nanoparticles (NPs) are routinely stabilized by the introduction of capping agents or their distribution on supports. In this context, we report the preparation and characterization of N-heterocyclic carbene (NHC)-stabilized silver NPs supported on
Recyclable Cu/C3N4 composite catalyzed AHA/A3 coupling reactions for the synthesis of propargylamines
Xu, Hang,Wang, Jun,Wang, Peng,Niu, Xiyu,Luo, Yidan,Zhu, Li,Yao, Xiaoquan
, p. 32942 - 32947 (2018/10/15)
The heterogeneous Cu/C3N4 catalyst was found to be efficient for the synthesis of propargylamines using a three-component coupling reaction of alkynes, CH2Cl2 and amines (AHA) without additional base. Moreover,
Construction of four copper coordination polymers derived from a tetra-pyridyl-functionalized Calix[4]arene: Synthesis, structural diversity, and catalytic applications in the A3 (Aldehyde, Alkyne, and Amine) coupling reaction
Yu, Cai-Xia,Hu, Fei-Long,Liu, Meng-Yu,Zhang, Cai-Wen,Lv, Yun-He,Mao, Shu-Kuan,Liu, Lei-Lei
, p. 5441 - 5448 (2018/03/02)
Solvothermal reactions of CuX2 (X = NO3, Cl, Br, I) with tetra-pyridyl-functionalized calix[4]arene at 130 °C afforded four novel coordination polymers, {[(CuNO3)2L]·MeOH}n (1), [(CuCl2)-L0.5]n (2), [(Cu3Br3)L]n (3), and [(Cu3I3)L]n (4), where L = 25,26,27,28-tetra[(3-pyridylmethyl)oxy]calix[4]arene. All the products were characterized by infrared spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction, and powder X-ray diffraction. Crystal structure analysis reveals that 1 holds a one-dimensional (1D) double-chain constructed by mononuclear [Cu(NO3)] units and L linkers, while 2 features a 1D chain and its bowl-shaped L ligands work as linkers to connect the dinuclear [Cu2Cl4] units. Compounds 3 and 4 bear similar two-dimensional networks, in which each trinuclear [Cu3Br3]/[Cu3I3] unit works as a three-connecting node to connect its six equivalents by sharing L ligands. These results demonstrate that different anions have a significant effect on the final structure formation. Compounds 1?4 were employed as catalysts for the A3 coupling reaction under microwave irradiation. Notably, 3 showed the best catalytic properties for the synthesis of versatile propargylamines (yield up to 94% in only 10 min) from the A3 reaction of formaldehyde with a variety of alkynes and amines.
Catalyst-free activation of methylene chloride and alkynes by amines in a three-component coupling reaction to synthesize propargylamines
Rawat, Vikas S.,Bathini, Thulasiram,Govardan,Sreedhar, Bojja
supporting information, p. 6725 - 6729 (2014/08/18)
Propargylamines are synthesized via metal-free activation of the C-halogen bond of dihalomethanes and the C-H bond of terminal alkynes in a three-component coupling without catalyst or additional base and under mild reaction conditions. The dihalomethanes
Base catalyzed intramolecular cycloaddition of dialkyl(4-hydroxybutyn2-yl) [3-(p-tolyl)propyn- - 2-yl]ammonium chlorides and intramolecular recyclization of the products obtained
Chukhajian,Ayrapetyan,Chukhajian,Panosyan
experimental part, p. 151 - 157 (2011/08/07)
Dialkyl(4-hydroxybutyn-2-yl)[3-(p-tolyl)propyn-2-yl]ammonium chlorides undergo a diene synthesis type intramolecular cyclization in aqueous base medium to give 2,2-dialkyl-4-hydroxymethyl-6-methyl-benzo[f]isoindolinium chlorides. Under conditions of aqueo
