Saegusa Oxidation of Enol Ethers at Extremely Low Pd-Catalyst Loadings under Ligand-free and Aqueous Conditions: Insight into the Pd(II)/Cu(II)-Catalyst System
作者:Quan Zhu、Yunsong Luo、Yongyan Guo、Yushun Zhang、Yunhai Tao
DOI:10.1021/acs.joc.0c02987
日期:2021.4.16
system of Saegusa oxidation, which converts enolethers to the corresponding enals with a number of diverse substrates at extremely low catalyst loadings (500 mol ppm) under ligand-free and aqueous conditions, is described. Its synthetic utility was demonstrated by large-scale applications of the catalyst system to important nature molecules. This work allows Saegusa oxidation to become a highly practical
Nickel‐Catalyzed Reductive Coupling of Vinyl Triflates and 1,4‐Dicyanobenzene to Access Alkenyl Nitriles
作者:Le‐Le Wang、Zhong‐Xian Li、Jun Zhu
DOI:10.1002/adsc.202301072
日期:2024.2.19
We report a vinyl cyanation reaction of vinyl triflates and readily available 1,4-dicyanobenzene through a nickel-catalyzed reductive coupling process. The reaction is operated under mild conditions with remarkable functional-group compatibility. Cyclic vinyl triflates with various ring sizes and substituents at different positions all reacted smoothly. The synthetic utility is demonstrated by the
NOVEL HYDROXAMIC ACID AND N-HYDROXYUREA DERIVATIVES AND THEIR USE
申请人:PFIZER HOSPITAL PRODUCTS, INC.
公开号:EP0559743A1
公开(公告)日:1993-09-15
[EN] NOVEL HYDROXAMIC ACID AND N-HYDROXYUREA DERIVATIVES AND THEIR USE
申请人:PFIZER INC.
公开号:WO1992009566A1
公开(公告)日:1992-06-11
(EN) Certain novel hydroxamic acid derivatives having structure (I), inhibit the enzyme lipoxygenase. These compounds, and the pharmaceutically acceptable salts thereof, are useful in the treatment or alleviation of inflammatory diseases, allergic conditions and cardiovascular diseases in mammals and as the active ingredient in pharmaceutical compositions for treating such conditions.(FR) L'invention se rapporte à certains nouveaux derivés d'acide hydroxamique, de structure (I), qui inhibent l'enzyme lipoxygénase. Ces composés ainsi que leurs sels acceptables du point de vue pharmaceutique sont utilisables pour traiter ou apaiser des troubles inflammatoires, des états allergiques et des maladies cardiovasculaires chez les mammifères et comme principes actifs dans des compositions pharmaceutiques servant à traiter de tels états.