Environmentally Friendly and Recyclable CuCl2-Mediated C–S Bond Coupling Strategy Using DMEDA as Ligand, Base, and Solvent
作者:Guodong Shen、Xianqiang Huang、Qichao Lu、Zeyou Wang、Weiwei Sun、Yalin Zhang、Manman Sun、Zhiming Wang
DOI:10.1055/a-1561-5508
日期:2022.1
Simple reaction conditions and recyclable reagents are crucial for environmentally friendly industrial applications. An environment-friendly, recyclable and economic strategy was developed to synthesize diaryl chalcogenides by the CuCl2-catalyzed C–S bond-formation reaction via iodobenzenes and benzenethiols/1,2-diphenyldisulfanes using N,N′-dimethylethane-1,2-diamine (DMEDA) as ligand, base, and solvent
CONDENSED CYCLIC COMPOUND, COMPOSITION INCLUDING THE CONDENSED CYCLIC COMPOUND, AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE CONDENSED CYCLIC COMPOUND
申请人:Samsung Electronics Co., Ltd.
公开号:US20200031812A1
公开(公告)日:2020-01-30
A condensed cyclic compound represented by Formula 1:
Ar
1
-L
1
-Ar
2
Formula 1
wherein, in Formula 1, Ar
1
, Ar
2
, and L are the same as described in the specification.
Density functional theory (DFT) calculations reveal that the two adjacent iodines in o-diiodoarenes play critical roles in the formation of aryne. The nucleophilic attack of hydride to the electrophilic iodine requires that the adjacent iodine act as a directing group to accelerate this process, whereas mono-substituted iodobenzene lacking the neighboring-group participation makes it difficult. The in-situ-formed
在这里,我们记录了以“旧”邻二碘芳烃作为芳炔祖体的芳炔化学的重新发明。我们建立了 NaH 介导的活化策略,以受控方式生成高反应性芳炔物种。所得芳炔可以有效地参与与未活化酮的C-C σ键插入反应,这是现有方法难以实现的。密度泛函理论 (DFT) 计算表明o中的两个相邻碘-二碘芳烃在芳炔的形成中起关键作用。氢化物对亲电子碘的亲核攻击需要邻近的碘充当导向基团来加速这一过程,而缺乏邻近基团参与的单取代碘苯则使其变得困难。酮原位形成的烯醇化物被建议采用四聚体聚集体与芳烃反应,这解释了具有大取代基的底物的高区域化学性。
Pyridone compounds and agricultural and horticultural fungicides containing the same as active ingredients
申请人:MITSUI CHEMICALS AGRO, INC.
公开号:US11000038B2
公开(公告)日:2021-05-11
A pyridone compound represented by Formula (1):
wherein R1, R2, X, Y and Z are defined. The pyridone compound can control plant diseases.
由式(1)代表的吡啶酮化合物:其中 R1、R2、X、Y 和 Z 已定义。 吡啶酮化合物可防治植物病害。