Regioselective Isomerization of 2,3-Disubstituted Epoxides to Ketones: An Alternative to the Wacker Oxidation of Internal Alkenes
作者:Jessica R. Lamb、Michael Mulzer、Anne M. LaPointe、Geoffrey W. Coates
DOI:10.1021/jacs.5b10419
日期:2015.12.2
trans-alkenes followed by a mild and highly regioselective isomerization to give the major ketone isomers in 66-98% yield. Preliminary kinetics and isotopelabeling studies suggest epoxide ring opening as the turnover limiting step in our proposedmechanism. A similar catalytic system was applied to the kinetic resolution of select trans-epoxides to give synthetically useful selectivity factors of 17-23
Palladium-Catalyzed Mono-α-arylation of Carbonyl-Containing Compounds with Aryl Halides using DalPhos Ligands
作者:Sarah M. Crawford、Pamela G. Alsabeh、Mark Stradiotto
DOI:10.1002/ejoc.201200951
日期:2012.10
We report the extension and optimization of the [Pd(cinnamyl)Cl]2/DalPhos catalyst system, previously found effective for the mono-α-arylation of acetone, to the mono-α-arylation of a variety of carbonyl-containing compounds with aryl halides and heteroaryl halides. Aryl methyl ketones, heteroaryl methyl ketones, propiophenones, malonates, and methoxyacetone can be α-arylated under relatively mild
SULFONAMIDE DERIVATIVE AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALT THEREOF
申请人:UNIVERSITY OF TSUKUBA
公开号:US20180179151A1
公开(公告)日:2018-06-28
The present invention aims to provide a novel low-molecular-weight compound exhibiting an orexin receptor agonist activity and expected to be useful as a prophylactic or therapeutic agent for narcolepsy and the like. The present invention provides a compound represented by the formula (I):
wherein each symbol is as defined in the description, or a pharmaceutically acceptable acid addition salt thereof, which has an orexin receptor agonist activity, and an orexin receptor agonist containing the compound or a pharmaceutically acceptable acid addition salt thereof.
NEW COMPOUNDS, PHARMACEUTICAL COMPOSITIONS AND USES THEREOF
申请人:HECKEL Armin
公开号:US20130143892A1
公开(公告)日:2013-06-06
The present invention relates to compounds of general formula I,
wherein R
1
, L
P
, HetAr, Ar, and n are as defined in the application, which have valuable pharmacological properties, and in particular bind to the GPR119 receptor and modulate its activity.
Electroreduction of benzyl chlorides in the presence of acid anhydrides brought about stereoselective formation of (E)-enol esters of the corresponding benzyl alkyl ketones, the initial acylated products, in good to moderate yields.