4998-76-9Relevant articles and documents
Cycloheptylamine derivatives as anti-diabetic agents
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Page/Page column 7; 8, (2021/08/18)
Cycloalkylamine derivatives may be used for preventing or treating diseases in humans, animals, and have demonstrated efficacy specifically in treating type 2 diabetes. In an embodiment, the cycloalkylamine derivatives can include a compound selected from the group consisting of cycloheptanamine salts, cyclohexanamine salts, cyclopentanamine salts 1-cycloheptyl-[4,4′-bipyridin]-1-ium, N1,N2-dicycloheptyloxalamide, 1-[3′,5′-bis(trifluoromethyl)phenyl]-3-cycloheptylurea, 1,1′-(4-methyl-1,3-phenylene)bis(3-cycloheptylurea), 1-(2′-aminopyrimidin-4′-yl)-3-cycloheptylurea, 4-amino-N-(cycloheptylcarbamoyl)benzenesulfonamide, 4-(3′-cycloheptylureido)-N-(5″-methylisoxazol-3″-yl)benzenesulfonamide, N-(cycloheptylcarbamoyl)-4-methylbenzenesulfonamide, 1-cycloheptylguanidine hydrochloride, (E)-amino[(amino(cycloheptylamino)methylene)amino]methaniminium chloride, or a pharmaceutically acceptable salt thereof.
Metal-Free Synthesis of Heteroaryl Amines or Their Hydrochlorides via an External-Base-Free and Solvent-Free C-N Coupling Protocol
Fan, Guang-Gao,Jiang, Bo-Wen,Sang, Wei,Cheng, Hua,Zhang, Rui,Yu, Bao-Yi,Yuan, Ye,Chen, Cheng,Verpoort, Francis
, p. 14627 - 14639 (2021/11/01)
Herein, a metal-free and solvent-free protocol was developed for the C-N coupling of heteroaryl halides and amines, which afforded numerous heteroaryl amines or their hydrochlorides without any external base. Further investigations elucidated that the basicity of amines and specific interactions derived from the X-ray crystallography analysis of 3j′·HCl played pivotal roles in the reactions. Moreover, this protocol was scalable to gram scales and applicable to drug molecules, which demonstrated its practical value for further applications.
Ceria supported Ru0-Ruδ+ clusters as efficient catalyst for arenes hydrogenation
Cao, Yanwei,Zheng, Huan,Zhu, Gangli,Wu, Haihong,He, Lin
, p. 770 - 774 (2020/08/24)
Selective hydrogenation of aromatic amines, especially chemicals such as aniline and bis(4-aminocyclohexyl)methane for non-yellowing polyurethane, is of particular interests due to the extensive applications. To conquer the existing difficulties in selective hydrogenation, the Ru0-Ruδ+/CeO2 catalyst with solid frustrated Lewis pairs was developed for aromatic amines hydrogenation with excellent activity and selectivity under relative milder conditions. The morphology, electronic and chemical properties, especially the Ru0-Ruδ+ clusters and reducible ceria were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), CO2 temperature programmed desorption (CO2-TPD), H2 temperature programmed reduction (H2-TPR), H2 diffuse reflectance Fourier transform infrared spectroscopy (H2-DRIFT), Raman, etc. The 2% Ru/CeO2 catalyst exhibited good conversion of 95% and selectivity greater than 99% toward cyclohexylamine. The volcano curve describing the activity and Ru state was found. Owning to the “acidic site isolation” by surrounding alkaline sites, condensation between the neighboring amine molecules could be effectively suppressed. The catalyst also showed good stability and applicability for other aromatic amines and heteroarenes containing different functional groups.
