Acid-promoted palladium(II)-catalyzed ortho-halogenation of primary benzamides: En route to halo-arenes
作者:Yogesh Jaiswal、Amit Kumar
DOI:10.1016/j.catcom.2019.105784
日期:2019.11
Brønsted acid-promoted palladium(II)-catalyzed regioselective installation of halogens (Br, Cl, and I) to the aromatic ring of benzamide derivatives has been achieved using primary amides. A wide variety of benzamides were compatible under established conditions to afford the halogenated products without installing any external auxiliary. Mild reaction conditions, use of primary amide as a directing
申请人:PnH tech (주)피엔에이치테크(120100135796) Corp. No ▼ 131111-0237931BRN ▼129-86-36614
公开号:KR20160040826A
公开(公告)日:2016-04-15
유기전계발광소자용 화합물 및 그를 포함하는 유기전계발광소자가 개시된다. 이에 의하여, 전기적 안정성 및 정공 수송능력이 우수하며, 삼중항 상태 에너지가 높아 인광발광재료의 발광효율을 향상시킬 수 있는 호스트 및 정공수송물질로 사용할 수 있는 유기전계발광소자용 화합물 및 유기전계발광소자를 제공할 수 있다.
Nickel-catalyzed regioselective C–H halogenation of electron-deficient arenes
作者:Ze-Lin Li、Peng-Yu Wu、Chun Cai
DOI:10.1039/c8nj06023a
日期:——
the ortho-halogenation of electron-deficient arenes with easily available halogenating reagents N-halosuccinimides (NXS; X = Br, Cl and I). The transformation was highly regioselective and a wide substrate scope and functional group tolerance were observed. This discovery could be of great significance for the selective halogenation of amides, benzoic esters and other substances with guiding groups. Mechanistic
开发了一种简单的Ni(II)催化的一般策略,用于用易获得的卤化试剂N-卤代琥珀酰亚胺(NXS; X = Br,Cl和I)对电子缺陷型芳烃进行邻卤代化。该转化是高度区域选择性的,并且观察到宽的底物范围和官能团耐受性。该发现对于酰胺,苯甲酸酯和其他具有引导基团的物质的选择性卤化可能具有重要意义。还介绍了机械研究。
Iridium‐Catalyzed Ligand‐Controlled Remote
<i>para</i>
‐Selective C−H Activation and Borylation of Twisted Aromatic Amides
A highly para-selective C−H borylation of aromatic amides is reported. The para borylation proceeds via an unprecedented substrate–ligand distortion between the twisted aromatic amides and a newly designed ligand framework (defa), which is different from the standard borylation ligand. A new type of catalytic system was developed by using this defa ligand that demonstrated excellent levels of para
报道了芳族酰胺的高度对位选择性 C-H 硼基化。对位硼化通过扭曲的芳香酰胺和新设计的配体框架(defa)之间前所未有的底物-配体扭曲进行,这与标准的硼化配体不同。使用这种 defa 配体开发了一种新型催化系统,该配体对一系列芳族酰胺表现出优异的对位选择性。
Substituierte N-Benzoyl-N'-tert.-alkoxycarbonylphenyl-(thio)harnstoffe, Verfahren zu ihrer Herstellung und ihre Verwendung als Insektizide
申请人:BAYER AG
公开号:EP0009762A1
公开(公告)日:1980-04-16
N-Benzoyl-N'-tert.-alkoxycarbonylphenyl- (thio)harnstoffe der Formel
in welcher
R' für Halogen oder Alkyl steht,
R2 und
R3 unabhängig von einander für Wasserstoff oder Halogen stehen,
R4 für Alkyl steht,
R5 und
R6 entweder einzeln für Alkyl oder zusammen für α,ω Alkandiyl stehen und
X für Sauerstoff oder Schwefel steht.
Man erhält sie, wenn man substituierte Benzoyl-iso(thio) cyanate mit Amino-benzoesäureesternumsetzt oder substituierte Benzoesäureamide mit tert.-Alkoxycarbonylphenyl- iso(thio) cyanaten umsetzt.
Sie haben eine insektizide Wirkung.