3947-93-1Relevant academic research and scientific papers
Switchable Imine and Amine Synthesis Catalyzed by a Well-Defined Cobalt Complex
Paudel, Keshav,Xu, Shi,Hietsoi, Oleksandr,Pandey, Bedraj,Onuh, Chuka,Ding, Keying
, p. 418 - 426 (2021/02/01)
Switchable imine and amine synthesis catalyzed by a tripodal ligand-supported well-defined cobalt complex is presented herein. A large variety of primary alcohols and amines were selectively converted to imines or amines in good to excellent yields. It is discovered that the base plays a crucial role on the selectivity. A catalytic amount of base leads to the imine formation, while an excess loading of base results in the amine product. This strategy on product selectivity also strongly depends on the organometallic catalysts in use. We expect that the present study could provide useful insights toward selective organic synthesis and catalyst design.
One-pot synthesis of Schiff base compounds: Via photocatalytic reaction in the coupled system of aromatic alcohols and nitrobenzene using CdIn2S4 photocatalyst
Ye, Xiangju,Chen, Yinghao,Ling, Cancan,Ding, Ran,Wang, Xuchun,Zhang, Xuemei,Chen, Shifu
supporting information, p. 10915 - 10924 (2018/08/23)
The use of solar energy to drive organic reactions under mild conditions provides a sustainable pathway for green synthesis and has been one of the primary goals pursued by scientists. In this research, the cadmium indium sulfide (CdIn2S4) photocatalyst was prepared using a simple solvothermal method and was thoroughly characterized using X-ray powder diffraction, UV-visible absorption spectra, nitrogen adsorption-desorption isotherms, scanning electron microscopy, transmission electron microscopy and X-ray spectroscopy measurements. The photocatalytic performance of the CdIn2S4 photocatalyst was evaluated using photocatalytic synthesis of Schiff base compounds in a coupled system of aromatic alcohols and nitrobenzene under visible light irradiation. The yield of N-benzylideneaniline reached up to 32% in the coupled system of benzyl alcohol and nitrobenzene under visible light illumination for 8 h. Furthermore, the changes for the amounts of aromatic aldehydes and AL as intermediate products during the photocatalytic process were also investigated. Using isotopic tracing, a possible reaction mechanism for the photocatalytic synthesis of N-benzylideneaniline and the redox reactions in the coupled system of benzyl alcohol and nitrobenzene was proposed. It is hoped that this strategy can provide an effective pathway for the traditional organic synthesis and transformation using photocatalytic technology under mild conditions.
Unsymmetrical indazolyl-pyridinyl-triazole ligand-promoted highly active iridium complexes supported on hydrotalcite and its catalytic application in water
Ge, Chenyang,Sang, Xinxin,Yao, Wei,Zhang, Liang,Wang, Dawei
supporting information, p. 1805 - 1812 (2018/04/30)
Herein, an indazolyl-pyridinyl-triazole ligand was synthesized and its iridium complex supported on hydrotalcite was characterized via X-ray power diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray (EDX) spectroscopy and transmission electron microscopy (TEM). This new heterogeneous catalyst bearing the unsymmetrical indazolyl-pyridinyl-triazole ligand exhibits high catalytic activity in water. Both functionalized amines and imines were obtained from the challenging selective reaction of benzylamines with arylamines through transfer hydrogenation and dehydrogenation under clean conditions. In particular, it was observed that this catalyst system showed good recovery performance in water. Mechanistic studies showed that this transformation occurs via amine dehydrogenation, hydrolysis and condensation processes. The direct capture of the reaction intermediate provides sufficient proof for this process.
Desulfurization and H-migration of secondary thioamides catalyzed by an iron complex to yield imines and their reaction mechanism
Fukumoto, Kozo,Sakai, Akane,Hayasaka, Kazumasa,Nakazawa, Hiroshi
, p. 2889 - 2892 (2013/06/27)
Secondary thioamides were converted into imines as the major products using hydrosilane in the presence of an iron catalyst. An iron carbene complex with a silyl thiolato ligand was isolated as one of the intermediates of the catalytic cycle and was characterized by X-ray analysis.
One step synthesis of deuterium or tritium labelled imines and aldazine under mild conditions
Barton, Derek H. R.,Doris, Eric,Taran, Frederic
, p. 871 - 871 (2007/10/03)
A novel procedure for the synthesis of labelled imines and aldazines, using a Bu3P catalyzed decarboxylation reaction, is described.
