已经探索了一种有吸引力的钯催化的烯丙基醚的还原氨基羰基化反应,用于合成 3-alkenylquinolin-2(1 H )-one 衍生物。以Mo(CO) 6作为CO 替代物和还原剂,以邻硝基苯甲醛为氮源,由邻碘苯酚衍生的烯丙基醚以良好至优异的收率获得了多种3-alkenylquinolin-2(1 H )-one . 该反应通过级联途径进行,不依赖于以前的烯丙基羰基化反应所需的高压 CO 气体。该策略为构建 3-alkenylquinolin-2(1 H )-ones 提供了新途径。
Pd-Catalyzed Highly Regio- and Stereoselective Formation of C–C Double Bonds: An Efficient Method for the Synthesis of Benzofuran-, Dihydrobenzofuran-, and Indoline-Containing Alkenes
A highly regio- and stereoselective C–C double bond formation reactionvia Pd-catalyzed Heck-type cascade process with N-tosylhydrazones has been developed. Various N-tosylhydrazones derived from both ketones and aldehydes are found to be efficient substrates to provide di- and trisubstitutedolefins with high regio- and stereoselectivity. Furthermore, this reaction has a good functional group tolerance
The present invention relates to compounds useful as inhibitors of DNA-PK. The invention also provides pharmaceutically acceptable compositions comprising said compounds and methods of using the compositions in the treatment of various disease, conditions, or disorders.
Compounds having the formula I wherein
wherein R
1
, R
2
, R
3b
, R
4a
, R
4b
, R
4c
and as defined herein are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.
It is the combo! NaH in combination with 1,4-dioxane serves as the reagent for the radical chain reduction of various aryl halides. Hydrodehalogenation is initiated by 1,10-phenanthroline (phen) at elevated temperature and can be combined with a typical radical cyclization reaction. the reactions proceed via electron catalysis.
Synthesis of All‐Carbon Quaternary Centers by Palladium‐Catalyzed Olefin Dicarbofunctionalization
作者:Maximilian Koy、Peter Bellotti、Felix Katzenburg、Constantin G. Daniliuc、Frank Glorius
DOI:10.1002/anie.201911012
日期:2020.2.3
The redox-neutral dicarbofunctionalization of tri- and tetrasubstituted olefins to form a variety of (hetero)cyclic compounds under photoinduced palladium catalysis is described. This cascade reaction process was used to couple styrenes or acryl amides with a broad range of highly decorated olefins tethered to aryl or alkyl bromides (>50 examples). This procedure enables one or two contiguous all-carbon