[EN] HYDROGENATION AND DEHYDROGENATION CATALYST, AND METHODS OF MAKING AND USING THE SAME<br/>[FR] CATALYSEUR D'HYDROGÉNATION ET DE DÉSHYDROGÉNATION, ET SES PROCÉDÉS DE FABRICATION ET D'UTILISATION
申请人:GOUSSEV DMITRI
公开号:WO2013023307A1
公开(公告)日:2013-02-21
The present application discloses complexes useful as catalysts for organic chemical synthesis including hydrogenation and dehydrogenation of unsaturated compounds or dehydrogenation of substrates. The range of hydrogenation substrate compounds includes esters, lactones, oils and fats, resulting in alcohols, diols, and triols as reaction products. The catalysts of current application can be used to catalyze a hydrogenation reaction under solvent free conditions. The present catalysts also allow the hydrogenation to proceed without added base, and it can be used in place of the conventional reduction methods employing hydrides of the main-group elements. Furthermore, the catalysts of the present application can catalyze a dehydrogenation reaction under homogenous and/or acceptorless conditions. As such, the catalysts provided herein can be useful in substantially reducing cost and improving the environmental profile of manufacturing processes for variety of chemicals.
The hydroboration/Pd-catalyzed migrative Suzuki–Miyaura cross-coupling of 1,3-dienes with electron-deficient arylhalides has been developed, which enables the synthesis of branched allylarenes directly from primary homoallylic alkyl boranes. A ligand-tuned linear- or branch-selective coupling for these arylhalides has also been achieved.
Synthesis of 4-Alkylated Isocoumarins via Pd-Catalyzed α-Arylation Reaction
作者:Shane Plunkett、Lindsey G. DeRatt、Scott D. Kuduk、Jaume Balsells
DOI:10.1021/acs.orglett.0c02851
日期:2020.10.2
method for the rapid preparation of substituted isocoumarins is reported. The transformation takes advantage of a spontaneous intramolecular cyclization that follows the Pd-catalyzed α-arylation of aldehydes with 2-halobenzoic esters. The reaction uses an air-stable, single-component palladium catalyst and provides access to 4-alkylated isocoumarins in one step from commercial starting materials. The
Efficient synthesis of esters through oxone-catalyzed dehydrogenation of carboxylic acids and alcohols
作者:Fei Hou、Xi-Cun Wang、Zheng-Jun Quan
DOI:10.1039/c8ob02539h
日期:——
Since esters are important organic synthesis intermediates, an environmentally friendly oxone catalyzed-esterification of carboxylic acids with alcohols has been developed. A series of carboxylic acidesters are obtained in high yield. This strategy requires mild reaction conditions, providing an attractive alternative for the construction of valuable carbonyl esters. Electron-rich and electron-deficient
The chemoselective synthesis of phenanthridinones was studied using copper(I)- and palladium(II)-catalyzed CN bond formation with various bases, ligands, and solvents. Phenanthridinones were obtained from 2-halobiarylcarboxylates and amines in a one-pot reaction. The phenanthridinones and heterocyclic-fused lactam derivatives were accomplished using developed methods.