98128-00-8Relevant articles and documents
Copper-catalyzed hydroformylation and hydroxymethylation of styrenes
Franke, Robert,Geng, Hui-Qing,Meyer, Tim,Wu, Xiao-Feng
, p. 14937 - 14943 (2021/12/02)
Hydroformylation catalyzed by transition metals is one of the most important homogeneously catalyzed reactions in industrial organic chemistry. Millions of tons of aldehydes and related chemicals are produced by this transformation annually. However, most of the applied procedures use rhodium catalysts. In the procedure described here, a copper-catalyzed hydroformylation of alkenes has been realized. Remarkably, by using a different copper precursor, the aldehydes obtained can be further hydrogenated to give the corresponding alcohols under the same conditions, formally named as hydroxymethylation of alkenes. Under pressure of syngas, various aldehydes and alcohols can be produced from alkenes with copper as the only catalyst, in excellent regioselectivity. Additionally, an all-carbon quaternary center containing ethers and formates can be synthesized as well with the addition of unactivated alkyl halides. A possible reaction pathway is proposed based on our results. This journal is
A novel consecutive three-component Heck-isomerization-Wittig sequence by way of in situ generated aldehydes
Panther, Jesco,Roehrich, Adalbert,Mueller, Thomas J. J.
, p. 297 - 311 (2013/09/24)
A novel consecutive three-component four step synthesis of 5-(hetero)arylpent-2-enoates has been disclosed. Various (hetero)aryl iodides can be coupled with allyl alcohol under Heck conditions to give 3-(hetero)arylpropionaldehyde intermediates, which were transformed without isolation with in situ generated stabilized phosphorus ylides to furnish 5-(hetero)arylpent-2-enoates in moderate to excellent yield. This one-pot procedure circumvents the isolation of sensitive aldehydes and phosphorus ylides as intermediates and finally gives the product isomers with good to excellent E/Z and β/α selectivity. ARKAT-USA, Inc.
Highly efficient ligands for dihydrofolate reductase from Cryptosporidium hominis and Toxoplasma gondii inspired by structural analysis
Pelphrey, Phillip M.,Popov, Veljko M.,Joska, Tammy M.,Beierlein, Jennifer M.,Bolstad, Erin S. D.,Fillingham, Yale A.,Wright, Dennis L.,Anderson, Amy C.
, p. 940 - 950 (2007/10/03)
The search for effective therapeutics for cryptosporidiosis and toxoplasmosis has led to the discovery of novel inhibitors of dihydrofolate reductase (DHFR) that possess high ligand efficiency: compounds with high potency and low molecular weight. Detaile
