Functionalization of Primary C–H Bonds in Picolines toward Pyridylthioamides
作者:Tuan H Ho、Ha H K Le、Tuong A To、Tung T Nguyen、Nam T S Phan
DOI:10.1246/bcsj.20200004
日期:2020.6.15
We report a method for coupling of nitroarenes, 2- or 4-methylazaarenes, and elemental sulfur to afford (2-pyridyl)aryl thioamides. Good tolerance of functionalities was observed, including primary...
A Robust, Eco‐Friendly Access to Secondary Thioamides through the Addition of Organolithium Reagents to Isothiocyanates in Cyclopentyl Methyl Ether (CPME)
The nucleophilic addition of widely available and variously functionalized organolithiumreagents to isothiocyanates represents a straightforward, high‐yielding, one‐pot method to access secondary thioamides. The simple reaction conditions required and the broad scope (>50 cases examples) makes it a robust and reliable method to access both simple and complex thioamides, including enantiopure ones
Halogen bonding catalysis has recently gained increasing attention as a powerful tool to activate organic molecules. However, the variety of the catalyst structure has been quite limited so far. Herein, we report the first example of the use of an iodoalkyne as a halogen bond donor catalyst. By using an iodoalkyne bearing a pentafluorophenyl group as a catalyst, thioamides were efficiently activated and
卤素键催化作为一种激活有机分子的有力工具,最近受到越来越多的关注。然而,到目前为止,催化剂结构的变化非常有限。本文中,我们报道了使用碘炔作为卤素键供体催化剂的第一个例子。通过使用带有五氟苯基的碘炔作为催化剂,硫酰胺可以有效地活化并与2-氨基苯酚反应生成苯并恶唑,收率很高。包括13 C NMR光谱分析和一些对照实验在内的机理研究提供了具体的证据,表明这种催化活化是基于卤素键。因此,在这项研究中获得的结果表明,碘炔可以作为卤素支架催化未来发展的新支架。
Luminescent iridium(<scp>iii</scp>)–boronic acid complexes for carbohydrate sensing
作者:Tahmineh Hashemzadeh、Mohammad A. Haghighatbin、Johnny Agugiaro、David J. D. Wilson、Conor F. Hogan、Peter J. Barnard
DOI:10.1039/d0dt02177f
日期:——
three S-ethylated pyridine-2-thiocarboxamides precursors. Reaction of these precursors produced three new 1,2,4-triazole- and one 1,3,4-oxadiazole-based ligands substituted with boronic acid pinacol ester groups. The boronic acid pinacol esters were then converted to boronic acids in two steps via potassium trifluoroborate intermediates. The boronic acid substituted ligands and their Ir(III) complexes
Triazole derivative, and light-emitting device, and electronic device with the use of triazole derivative
申请人:Nomura Hiroko
公开号:US20080286607A1
公开(公告)日:2008-11-20
It is an object of the present invention to provide a novel triazole derivative. Further, it is another object of the present invention to provide a light-emitting element having high luminous efficiency with the use of the novel triazole derivative. Moreover, it is still another object of the present invention to provide a light-emitting device and electronic devices which have low power consumption. A light-emitting element having high luminous efficiency can be manufactured with the use of a triazole derivative which is a 1,2,4-triazole derivative, in which an aryl group or a heteroaryl group is bonded to each of 3-position, 4-position, and 5-position, and in which any one of the aryl group or heteroaryl group has a 9H-carbazol-9-yl group.