Asymmetric Hydrogenation of 2- and 2,3-Substituted Quinoxalines with Chiral Cationic Ruthenium Diamine Catalysts
作者:Jie Qin、Fei Chen、Ziyuan Ding、Yan-Mei He、Lijin Xu、Qing-Hua Fan
DOI:10.1021/ol2029096
日期:2011.12.16
The enantioselective hydrogenation of 2-alkyl- and 2-aryl-subsituted quinoxalines and 2,3-disubstituted quinoxalines was developed by using the cationic Ru(η6-cymene)(monosulfonylated diamine)(BArF) system in high yields with up to 99% ee. The counteranion was found to be critically important for the high enantioselectivity and/or diastereoselectivity.
Core‐Shell Nano‐Cobalt Catalyzed Chemoselective Reduction of N‐Heteroarenes with Ammonia Borane
作者:Sanxia Chen、Wenxuan Xue、Conghui Tang
DOI:10.1002/cssc.202201522
日期:2022.12.7
Awesome to the core: A core-shell nano-cobalt catalyst was reported for the chemoselective reduction of N-heteroarenes with ammonia borane under mild conditions, various N-heteroarenes including bioactive compounds were hydrogenated smoothly, and reduction sensitive functional groups such as cyano, ester, and halogens were well-tolerated. This novel method was applied in the synthesis of medicinally
Awesome to the core:一种核-壳纳米钴催化剂被报道用于在温和条件下用氨硼烷化学选择性还原N-杂芳烃,包括生物活性化合物在内的各种N-杂芳烃被顺利加氢,还原敏感的官能团如氰基,酯和卤素的耐受性良好。这种新方法也被应用于具有重要药用价值的分子和有机储氢系统的合成。
Pyridines and derivatives thereof as components for use in optoelectronic components
申请人:CYNORA GMBH
公开号:US10544361B2
公开(公告)日:2020-01-28
The invention relates to an organic molecule comprising a structure of formula 1 and to the use thereof in optoelectronic components.
wherein:
X is SO2, CO or a C—C single bond;
m is 0 or 1;
n is 1, 2 or 3;
r is 0 or 1;
s is 0 or 1;
LG is a divalent linker group, selected from:
or LG is an element-element single bond.
本发明涉及一种包含式 1 结构的有机分子及其在光电元件中的应用。
其中
X 是 SO2、CO 或 C-C 单键;
m 是 0 或 1
n 是 1、2 或 3
r 为 0 或 1
s 为 0 或 1;
LG 是二价连接基团,选自以下各项
或 LG 是元素-元素单键。
US7432264B2
申请人:——
公开号:US7432264B2
公开(公告)日:2008-10-07
Facile Synthesis and Bioactivity of Novel<i>N</i>,<i>N′</i>-disubstituted-1,2,3,4-tetrahydroquinoxalines
作者:Ying Fu、Jing-Yi Wang、Wen-Geng Chen、Yu Li、Li-Xia Zhao、Shuang Gao、Fei Ye
DOI:10.1002/jhet.2911
日期:2017.11
A series of novel N,N'‐disubstituted‐1,2,3,4‐tetrahydroquinoxalines were designed and synthesized by cyclization and acylation. The structures of all the novel compounds were confirmed by IR, 1H NMR, 13C NMR, and high‐resolution mass spectrometry. The configuration of 4d was determined by X‐ray diffraction. The preliminary biological tests showed that all the products could protect maize against the
一系列新颖Ñ,N”二取代的-1,2,3,4- tetrahydroquinoxalines设计并通过环化和酰化合成。所有新化合物的结构均通过IR,1 H NMR,13 C NMR和高分辨率质谱确认。4d的构型由X射线衍射确定。初步的生物学测试表明,所有产品都能在一定程度上保护玉米免受乙草胺的伤害。