Dual Oxidation State Tandem Catalysis in the Palladium-Catalyzed Isomerization of Alkynyl Epoxides to Furans
作者:Carlos Arroniz、Guilhem Chaubet、Edward A. Anderson
DOI:10.1021/acscatal.8b02248
日期:2018.9.7
states of palladium is described, which mediates the isomerization of alkynyl epoxides to furans. In a process termed “dual oxidation state tandem catalysis”, a multistep isomerization pathway is delineated in which the different metal oxidation states and ligands play independent mechanistic roles, but which, in combination, enable the use of milder reaction conditions and lower catalyst loadings than
Novel piperazines, pharmaceutical compositions and methods of use thereof
申请人:Clark B. Roger
公开号:US20080051415A1
公开(公告)日:2008-02-28
Disclosed are novel piperazine derivatives that act as agonists of the α7 nAChR. Also disclosed are pharmaceutical compositions, methods of treating inflammatory conditions, methods of treating CNS disorders, methods for inhibiting cytokine release from mammalian cells and methods for the preparation of the novel compounds.
Novel Piperazines, Pharmaceutical Compositions and Methods of Use Thereof
申请人:Clark Roger B.
公开号:US20120071652A1
公开(公告)日:2012-03-22
Disclosed are novel piperazine derivatives that act as agonists of the α7 nAChR. Also disclosed are pharmaceutical compositions, methods of treating inflammatory conditions, methods of treating CNS disorders, methods for inhibiting cytokine release from mammalian cells and methods for the preparation of the novel compounds.
can be arylated at the α-position in moderate to good yields. Mechanistic studies demonstrate that the reaction proceeds via a CMD pathway, with C–Hbondactivation as the rate-determining step. Furthermore, the scalability and applicability in the synthesis of a drug molecule exemplify the utility of this protocol.