Copper-Catalyzed Oxaziridine-Mediated Oxidation of C–H Bonds
作者:Hashim F. Motiwala、Belgin Gülgeze、Jeffrey Aubé
DOI:10.1021/jo3012336
日期:2012.8.17
bonds has been observed via copper-catalyzed reactions of oxaziridines. The oxidation proceeded with a variety of substrates, primarily comprising allylic and benzylic examples, as well as one example of an otherwise unactivated tertiary C–H bond. The mechanism of the reaction is proposed to involve single-electrontransfer to the oxaziridines to generate a copper-bound radicalanion, followed by hydrogen
Hydrogenations at Room Temperature and Atmospheric Pressure with Mesoionic Carbene-Stabilized Borenium Catalysts
作者:Patrick Eisenberger、Brian P. Bestvater、Eric C. Keske、Cathleen M. Crudden
DOI:10.1002/anie.201409250
日期:2015.2.16
1,2,3‐Triazolylidene‐based mesoionic carbene boranes have been synthesized in a convenient one‐pot protocol from the corresponding 1,2,3‐triazolium salts, base, and borane. Borenium ions are obtained by hydride abstraction and serve as catalysts in mild hydrogenation reactions of imines and unsaturated N‐heterocycles at ambient pressure and temperature.
première fois la synthèse de la spirohydantoïne derivée du N-méthyl-homogranatane [N-méthyl-aza-10-bicyclo[4,3,1]decane] avec centre spiranique en C-8. Nous avons attribué la configuration α à ce centre. La conformation et les associations que cette molécule présente à l'état solide ont été étudiées en les comparant avec celles des homologues inférieurs. QuelquesbasesdeMannich ont également été préparées
在N-甲基-高聚呋喃烷[ N-甲基-氮杂-10-双环[4,3,1]癸烷]中心spiranique en C-8上的首屈一指的合成螺。中心配置中心。构象分子协会和同类同业人之间的亲密关系。奎尔克斯基地位于曼尼奇(法国)上。
Rhodium-Catalyzed Asymmetric [5+2] Cycloaddition of Alkyne-Vinylcyclopropanes
Easy to scale: A rhodium‐catalyzed asymmetric intramolecular [5+2] cycloaddition of alkyne–vinylcyclopropanes has been developed. High enantioselectivities of up to >99.5 % ee have been achieved by the use of a chiral phosphoramidite ligand. The reaction can be easily scaled up and the stereochemical model of the present catalysis has also been proposed.
Ink composition, inkjet recording method, printed material, production method of a planographic printing plate and planographic printing plate
申请人:Fujifilm Corporation
公开号:EP1787809A1
公开(公告)日:2007-05-23
The present invention provides an ink composition, and inkjet recording method, a printed material, a production method of a planographic printing plate, and a planographic printing plate. The ink composition of the present invention contains a cationically polymerizable compound, a compound that generates an acid when irradiated with a radiation ray, and an onium salt compound that generates an organic acid compound having a basic nitrogen atom when irradiated with a radiation ray.