Natural product inspired library synthesis - Identification of 2,3-diarylbenzofuran and 2,3-dihydrobenzofuran based inhibitors of Chlamydia trachomatis
作者:Michael Saleeb、Sergio Mojica、Anna U. Eriksson、C. David Andersson、Åsa Gylfe、Mikael Elofsson
DOI:10.1016/j.ejmech.2017.11.099
日期:2018.1
A natural product inspired library was synthesized based on 2,3-diarylbenzofuran and 2,3-diaryl-2,3-dihydrobenzofuran scaffolds. The library of forty-eight compounds was prepared by utilizing Pd-catalyzed one-pot multicomponent reactions and ruthenium-catalyzed intramolecular carbenoid C-H insertions. The compounds were evaluated for antibacterial activity in a panel of test systems including phenotypic
Aerobic Copper‐Catalyzed Salicylaldehydic C
<sub>formyl</sub>
−H Arylations with Arylboronic Acids
作者:Lin Xiao、Tao‐Tao Lang、Ying Jiang、Zhong‐Lin Zang、Cheng‐He Zhou、Gui‐Xin Cai
DOI:10.1002/chem.202004810
日期:2021.2.15
We report a challenging copper‐catalyzed Cformyl−H arylation of salicylaldehydes with arylboronic acids that involves unique salicylaldehydic copper species that differ from reported salicylaldehydic rhodacycles and palladacycles. This protocol has high chemoselectivity for the Cformyl−H bond compared to the phenolic O−H bond involving copper catalysis under high reaction temperatures. This approach
我们报道了具有挑战性的水杨醛与芳基硼酸的铜催化的C甲酰基-H芳基化反应,其中涉及独特的水杨醛醛铜种类,不同于报道的水杨醛Rhodacycles和palladacycles。与在高反应温度下涉及铜催化的酚式O-H键相比,该方案对C甲酰基-H键具有较高的化学选择性。该方法与广泛的水杨醛和芳基硼酸底物兼容,包括雌酮和咔唑衍生物,可产生相应的芳基化产物。机理研究表明,水杨醛底物的2-羟基基团通过Cu I / Cu II触发水杨醛醛铜络合物的形成/ Cu III催化循环。
Direct C–H bond arylation of 2-hydroxybenzaldehydes with arylboronic acids via ligand-free palladium catalysis
作者:Fei Weng、Chengming Wang、Bin Xu
DOI:10.1016/j.tetlet.2010.02.166
日期:2010.5
A mild and efficient ligand-free palladium-catalyzed direct C–H bond arylation reaction was developed to afford 2-hydroxybenzophenones in good to excellent yields from easily available 2-hydroxybenzaldehydes and arylboronic acids. The given reaction provided one of the easiest pathways for accessing2-hydroxybenzophenones, and a variety of functional groups could be tolerated in this process.
Ruthenium‐Catalysed Asymmetric Intramolecular Isomerization/Esterification Reaction: Direct Synthesis of Chiral Dihydrocoumarins
作者:Lingzi Zhao、Xuchao Wang、Qing Qiang、Xingwei Zhao、Feipeng Liu、Shenci Lu、Zi‐Qiang Rong
DOI:10.1002/cjoc.202400084
日期:2024.8.15
An asymmetric isomerization/intramolecular coupling reaction of allylic alcohols to synthesize chiral dihydrocoumarins was successfully accomplished through ruthenium catalysis. This method demonstrates a wide substrate applicability, excellent tolerance for various functional groups, and good enantioselectivities (up to 90% ee). It provides a convenient pathway to produce a diverse range of structurally