Synthesis of Heterocycle-fused Pyridine<i>N</i>-Oxides from Oximes and Diazo Compounds<i>via</i>Rh<sup>III</sup>-Catalyzed CH Activation and Annulation
作者:Peng Sun、Youzhi Wu、Tie Yang、Xiaoming Wu、Jinyi Xu、Aijun Lin、Hequan Yao
DOI:10.1002/adsc.201500125
日期:2015.8.10
A RhIII‐catalyzed tandem CH activation and CN bond formation reaction between oximes and diazo compounds for the synthesis of heterocycle‐fused pyridine N‐oxides has been developed. The reaction exhibits good functional group tolerance and regioselectivity. After simple transformation, the 1‐substituted, 1,3‐disubstituted, 1,4‐disubstituted and 1,3,4‐trisubstituted heterocycle‐fused pyridines were
A synthetic method for azaheterocycles from aryl ketone O-acetyl oximes and internalalkynes has been developed by using the Cu(OAc)2–[Cp*RhCl2]2 bimetallic catalytic system. The reactions proceeded with both of anti- and syn-isomers of oximes with a wide scope of substituents. The Cu–Rh bimetallic system could be applied for the synthesis of isoquinolines as well as β-carboline, furo[2.3-c]pyridine
利用Cu(OAc)2- [Cp * RhCl 2 ] 2双金属催化体系,开发了一种由芳基酮O-乙酰基肟和内部炔烃合成氮杂杂环的方法。该反应在具有广泛取代基的肟的反-和顺-异构体上进行。Cu-Rh双金属系统可用于合成异喹啉以及β-咔啉,呋喃[2.3- c ]吡啶,吡咯并[2,3- c ]吡啶和噻吩并[2,3- c ]吡啶衍生物。
One-pot synthesis of 5-phenylimino, 5-thieno or 5-oxo-1,2,3-dithiazoles and evaluation of their antimicrobial and antitumor activity
作者:Lidia S. Konstantinova、Oleg I. Bol’shakov、Natalia V. Obruchnikova、Hélène Laborie、Annabelle Tanga、Valérie Sopéna、Isabelle Lanneluc、Laurent Picot、Sophie Sablé、Valérie Thiéry、Oleg A. Rakitin
DOI:10.1016/j.bmcl.2008.11.010
日期:2009.1
We here report the synthesis and biological evaluation of rare 4-substituted-5-phenylimino, 5-thieno- and 5-oxo-1,2,3-dithiazoles. Dithiazoles were selectively obtained in moderate to high yields (25–73%) via a one-pot reaction from various ethanoneoximes with sulfur monochloride, pyridine in acetonitrile followed by treatment by corresponding nucleophiles (aniline, thioacetamide and formic acid).
be more effective in destroying cancer cells. In this study, 1-(benzofuran-2-yl)ethan-1-one oxime and 26 oxime ethers containing heterocyclic, alicyclic or aromatic moiety were screened for their cytotoxicity against HeLa cancer cell line. The most promising derivatives with potential antitumor activity were 2-(cyclohexylideneaminoxy)acetic acid (18) and (E)-acetophenone O-2-morpholinoethyl oxime (22)
Synthesis and Optical Properties of 2-(Benzo[<i>b</i>]thiophene-3-yl)pyrroles and a New BODIPY Fluorophore (BODIPY=4,4-Difluoro-4-bora-3<i>a</i>,4<i>a</i>-diaza-<i>s</i>-indacene)
作者:Elena Yu. Schmidt、Boris A. Trofimov、Al'bina I. Mikhaleva、Nadezhda V. Zorina、Nadezhda I. Protzuk、Konstantin B. Petrushenko、Igor A. Ushakov、Marina Yu. Dvorko、Rachel Méallet-Renault、Gilles Clavier、Thanh Truc Vu、Ha Thanh Thao Tran、Robert B. Pansu
DOI:10.1002/chem.200802467
日期:2009.6.2
light fantastic: Two new 2‐(benzo[b]thiophene‐3‐yl)pyrroles have been synthesized, and are shown to exhibit opticalproperties that are promising for optoelectronic materials and devices such as highly efficient fluorescent sensors (see scheme). In addition a newBODIPYfluorophore, derived from 2‐(benzo[b]thiophene‐3‐yl)pyrrole, was also isolated and shows good spectroscopic properties in solution which
梦幻般的光:已经合成了两个新的2-(苯并[ b ]噻吩-3-基)吡咯,并显示出其光学特性对光电材料和器件(例如高效荧光传感器)很有希望(请参阅方案)。此外,还分离了一种新的由2-(苯并[ b ]噻吩-3-基)吡咯衍生的BODIPY荧光团,并在溶液中表现出良好的光谱性质,并完全保留了固态。