Copper-catalyzed oxidative cyclization of chalcone and benzylic amine leading to 2,5-diaryl oxazoles via carbon–carbon double bond cleavage
作者:Dongfang Liu、Jintao Yu、Jiang Cheng
DOI:10.1016/j.tet.2013.12.077
日期:2014.2
oxidative cyclization of chalcone with benzylic amine is achieved, providing 2,5-diaryl oxazoles in moderate to good yields. The procedure employs O2 as a clean oxidant and involves an oxidative cleavage of the CC bond as the key step.
Ligand-Free Palladium-Catalyzed Carbonylative Suzuki Couplings of Vinyl Iodides with Arylboronic Acids under Substoichiometric Base Conditions
作者:Zhiyuan Yang、Pei-Xue Gong、Wei Han、Junjie Chen、Jie Zhang、Xu Gong
DOI:10.1055/a-1511-0435
日期:2021.7
A ligand-free palladium-catalyzedcarbonylation of vinyl iodides with arylboronic acids, permitting the synthesis of chalcones and α-branched enones, has been established. This reaction proceeds smoothly at ambient pressure and temperature, and works well even with a substoichiometric amount of base. Importantly, this mild, efficient, and operationally simple protocol is suitable for the late-stage
Synthesis and cdc25B inhibitory activity evaluation of chalcones
作者:Fei Zhao、Qing-Jie Zhao、Jing-Xia Zhao、Da-Zhi Zhang、Qiu-Ye Wu、Yong-Sheng Jin
DOI:10.1007/s10600-013-0563-7
日期:2013.5
A library of sixty-five chalcones was prepared for screening against the protein phosphatase, cdc25B. From this library, thirteen compounds were found having good inhibitory activity. Two compounds have excellent activity and can be used for the design of more potent antiproliferative agents.
ROMPgel-Supported Thiazolium Iodide: An Efficient Supported Organic Catalyst for Parallel Stetter Reactions
作者:Anthony G. M. Barrett、Andrew C. Love、Livio Tedeschi
DOI:10.1021/ol048694u
日期:2004.9.1
[reaction: see text] A high-loading ROMPgel-supported thiazolium iodide was prepared via ROMPolymerization of the corresponding norbornene-derived monomer. The resulting ionic ROMPgel proved to be an efficient organiccatalyst for Stetter reactions. The 1,4-dicarbonyl products, important intermediates in the synthesis of cyclopentenones and heterocycles, were obtained in high yields and excellent purities
Michael-Michael Ring Closure Reaction of Benzyl Cyanides and Chalcones
作者:Mohammad M. Al-Arab、Bader S. Ghanem、Marilyn M. Olmstead
DOI:10.1055/s-1992-26289
日期:——
The synthesis of a number of highly substituted cyclohexane derivatives has been accomplished in a single step reaction of benzyl cyanides and chalcones (1:2) using sodium ethoxide in anhydrous diethyl ether at room temperature to give 3-aroyl-1,2,4, 6-tetraaryl-4-hydroxycyclohexanecarbonitriles. An unambiguous structural assignment was achieved from the analytical and infrared, 1H NMR and 13C NMR spectroscopic data as well as X-ray crystallography.