50798-95-3Relevant articles and documents
Selective C-C bonds formation, N-alkylation and benzo[d]imidazoles synthesis by a recyclable zinc composite
Zhu, Guanxin,Duan, Zheng-Chao,Zhu, Haiyan,Ye, Dongdong,Wang, Dawei
supporting information, p. 266 - 270 (2021/08/06)
Earth abundant metals are much less expensive, promising, valuable metals and could be served as catalysts for the borrowing hydrogen reaction, dehydrogenation and heterocycles synthesis, instead of noble metals. The uniformly dispersed zinc composites were designed, synthesized and carefully characterized by means of XPS, EDS, TEM and XRD. The resulting zinc composite showed good catalytic activity for the N-alkylation of amines with amines, ketones with alcohols in water under base-free conditions, while unsaturated carbonyl compounds could also be synthesized by tuning the reaction conditions. Importantly, it was the first time to realize the synthesis of 2-aryl-1H-benzo[d]imidazole derivatives by using this zinc composite under green conditions. Meanwhile, this zinc catalyst could be easily recovered and reused for at least five times.
COLORED DISPERSION, INK COMPOSITION USING THE SAME, AND DISPERSION STABILITY IMPROVEMENT METHOD THEREWITH AND PRINTING METHOD OF HYDROPHOBIC FIBER
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, (2021/08/13)
PROBLEM TO BE SOLVED: To provide dispersion liquid for inkjet printing ink that can manufacture a dyed thing excellent in color rendering, can obtain the dyeing having high sublimation transfer efficiency, high concentration and high quality, in sublimation transfer dying using inkjet printing, furthermore, excellent in storage stability. SOLUTION: A colorant dispersion comprises (A) a compound expressed by a formula (1), (B) C.I. Disperse Blue 360, and (C) a dispersant, in which when a total content of (A) and (B) is set to 100, a content of (B) is 10 or larger and 90 or smaller, (C) the dispersant contains at least any one selected from the group consisting of polyoxyethylene aryl phenyl ether-based dispersant, and polyoxyethylene arylphenyl ether sulfate-based dispersant. (R1 is H or a nitro group; R2 and R3 may be independently substituted with C1-C4 alkoxy group or C1-C4 alkyl groups that may be substituted with phenyl group; R4 is halogen atom; and R2 and R3 may be mutually coupling to form a ring.) SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT
Silver/manganese dioxide nanorod catalyzed hydrogen-borrowing reactions and tert-butyl ester synthesis
Luo, Huanhuan,Wang, Dawei,Xu, Zhaojun,Yang, Bobin,Yang, Yike
, p. 708 - 715 (2021/03/03)
Silver/manganese dioxide (Ag@MnO2) nanorods are synthesized and characterized by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray powder diffraction, and X-ray photoelectron spectroscopy. It was discovered that Ag@MnO2 nanorods can realize hydrogen-borrowing reactions in high yields and are also effective for the synthesis of tert-butyl esters from aryl cyanides and tert-butyl hydroperoxide in a short period of time. Mechanistic experiments revealed that this catalytic system acts as a Lewis acid in hydrogen-borrowing reactions, while the synthesis of tert-butyl esters occurs through a radical pathway. This is the first report on the excellent catalytic activity of Ag@MnO2 nanorods as a catalyst.