A PhI(OAc)2-promoted dioxygenation of allyl oximes, including one alkoxylation, has been developed. This reaction can give isoxazoline products bearing two contiguous tetrasubstituted carbons. Various oximes substrates bearing different aryl groups and tetrasubstituted-olefin moieties were compatible with the mild reaction conditions. A two-electron oxidation pathway was proposed based on results of
The catalytic activity of magneticallyrecoverable MIL‐101 was investigated in the oxidation of alkenes to carboxylic acids and cyanosilylation of aldehydes. MIL‐101 was treated with Fe3O4 and the prepared catalyst was characterized using Fourier transform infrared spectroscopy, X‐ray diffraction, N2 adsorption measurements, field emission scanning electron microscopy, energy‐dispersive X‐ray spectroscopy
在烯烃氧化为羧酸和醛的氰基硅烷化反应中,研究了磁性可回收MIL-101的催化活性。MIL-101用Fe 3 O 4处理,制备的催化剂用傅立叶变换红外光谱,X射线衍射,N 2吸附测量,场发射扫描电子显微镜,能量色散X射线光谱和电感耦合等离子体分析进行了表征。 。这种非均相催化剂中的催化活性中心是Cr 3+MIL-101框架的节点。该非均相催化剂具有优异的产率,短的反应时间和数倍的可重复使用性的优点,而其初始活性和在氧化和氰基硅烷化反应中的稳定性均没有显着降低。它的磁性使它可以使用外部磁场轻松分离。
Discovery of the First in Vivo Active Inhibitors of the Soluble Epoxide Hydrolase Phosphatase Domain
作者:Jan S. Kramer、Stefano Woltersdorf、Thomas Duflot、Kerstin Hiesinger、Felix F. Lillich、Felix Knöll、Sandra K. Wittmann、Franca-M. Klingler、Steffen Brunst、Apirat Chaikuad、Christophe Morisseau、Bruce D. Hammock、Carola Buccellati、Angelo Sala、G. Enrico Rovati、Matthieu Leuillier、Sylvain Fraineau、Julie Rondeaux、Victor Hernandez-Olmos、Jan Heering、Daniel Merk、Denys Pogoryelov、Dieter Steinhilber、Stefan Knapp、Jeremy Bellien、Ewgenij Proschak
DOI:10.1021/acs.jmedchem.9b00445
日期:2019.9.26
pharmacological target solubleepoxidehydrolase (sEH) is a bifunctional enzyme exhibiting two different catalytic activities that are located in two distinct domains. Although the physiological role of the C-terminal hydrolase domain is well-investigated, little is known about its phosphatase activity, located in the N-terminal phosphatase domain of sEH (sEH-P). Herein we report the discovery and optimization
Imidazolinium-Carbodithioate Zwitterions as Organocatalysts for the Cyanosilylation of Aldehydes
作者:René Wilhelm、Amélie Blanrue
DOI:10.1055/s-2004-834818
日期:——
Imidazolinium-carbodithioates as new organocatalysts have been found to catalyze the cyanosilylation of aldehydes in 100% conversion and good yields. The catalysts could be easily recovered during flash column chromatography.
Neutral π-Nucleophile-Catalyzed Cyanation of Aldehydes and Ketones
作者:Shi-Kai Tian、Xiu Wang
DOI:10.1055/s-2007-980366
日期:2007.6
1-Methoxy-2-methyl-1-(trimethylsiloxy)propene, a neutral Ï-nucleophile, was found to be able to efficiently catalyze the cyanation (cyanosilylation and cyanocarbonation) of various aldehydes and ketones, and this study provided the first illustration of using a neutral Ï-nucleophile for the development of synthetically useful organocatalysis.