Palladium-catalyzed Cross-coupling of Aryl Iodides with β-Trimethylsiloxy-α-diazoesters: A Novel Approach toward β-Keto-α-arylesters
作者:Zhibin Shu、Ji Zhang、Yan Zhang、Jianbo Wang
DOI:10.1246/cl.2011.1009
日期:2011.9.5
Palladium-catalyzed cross-coupling of β-trimethylsiloxy-α-diazoesters with aryliodides provides a new approach to β-keto-α-arylesters. It is shown that the β-trimethylsiloxy group can significantl...
N-Heterocyclic Carbene-Catalyzed Cross-Coupling of Aromatic Aldehydes with Activated Alkyl Halides
作者:Mohan Padmanaban、Akkattu T. Biju、Frank Glorius
DOI:10.1021/ol102626p
日期:2011.1.7
N-Heterocyclic carbene-catalyzed umpolung of aldehydes followed by their interception with diarylbromomethanes has been reported. This conceptually novel transition-metal-free cross-coupling of aldehydes with alkyl halides works well at low catalyst loadings and under mild reaction conditions leading to the formation of diaryl acetophenone derivatives in good yields. In addition, a-halo ketones and esters can also be used, as aldehyde reaction partners.
[EN] NOVEL DIARYL PYRIMIDINONE DERIVATIVES<br/>[FR] NOUVEAUX DERIVES DE DIARYLE PYRIMIDINEDIONE
申请人:ORCHID CHEMICALS & PHARM LTD
公开号:WO2003084935A2
公开(公告)日:2003-10-16
The present invention relates to novel diaryl pyrimidinedione derivatives of the general formula (I), their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their hydrates, their solvates, their pharmaceutically acceptable salts and pharmaceutically acceptable compositions containing them. The present invention more particularly provides novel diaryl pyrimidinedione derivatives of the general formula (I).