Highly Efficient and Versatile Synthesis of Polyarylfluorenes via Pd-Catalyzed C−H Bond Activation
摘要:
A facile protocol for the Pd-catalyzed preparative synthesis of fluorene derivatives has been developed. While a wide range of fluorenes; were easily obtained with high efficiency and selectivity under mild conditions, excellent functional group tolerance was also demonstrated. On the basis of Hammett and KIE studies, the present reaction is proposed to proceed via a base-assisted deprotonative metalation pathway.
Highly Efficient and Versatile Synthesis of Polyarylfluorenes via Pd-Catalyzed C−H Bond Activation
摘要:
A facile protocol for the Pd-catalyzed preparative synthesis of fluorene derivatives has been developed. While a wide range of fluorenes; were easily obtained with high efficiency and selectivity under mild conditions, excellent functional group tolerance was also demonstrated. On the basis of Hammett and KIE studies, the present reaction is proposed to proceed via a base-assisted deprotonative metalation pathway.
Modulators of C3a receptor and methods of use thereof
申请人:Biediger Ronald J.
公开号:US20080188528A1
公开(公告)日:2008-08-07
Provided are compounds that are modulators of C3a receptor activity, compositions containing the compounds and methods of use of the compounds and compositions. In certain embodiments, the compounds are pyridones. In certain embodiments, provided are methods for treatment or amelioration of diseases associated with modulation of C3a receptor activity.
MODULATORS OF C3A RECEPTOR AND METHODS OF USE THEREOF
申请人:ENCYSIVE PHARMACEUTICALS, INC.
公开号:EP2125739A1
公开(公告)日:2009-12-02
[EN] MODULATORS OF C3A RECEPTOR AND METHODS OF USE THEREOF<br/>[FR] MODULATEURS DU RÉCEPTEUR DU C3A ET LEURS PROCÉDÉS D'UTILISATION
申请人:ENCYSIVE PHARMACEUTICALS INC
公开号:WO2008079371A1
公开(公告)日:2008-07-03
[EN] Provided are compounds that are modulators of C3a receptor activity, compositions containing the compounds and methods of use of the compounds and compositions. In certain embodiments, the compounds are pyridones. In certain embodiments, provided are methods for treatment or amelioration of diseases associated with modulation of C3a receptor activity. [FR] L'invention propose des composés qui sont des modulateurs de l'activité du récepteur du C3a, des compositions contenant les composés et des procédés d'utilisation des composés et des compositions. Dans certains modes de réalisation, les composés sont des pyridones. Dans certains autres modes de réalisation, l'invention propose des procédés pour le traitement ou l'amélioration de maladies associées à la modulation de l'activité du récepteur du C3a.
Highly Efficient and Versatile Synthesis of Polyarylfluorenes via Pd-Catalyzed C−H Bond Activation
作者:Seung Jun Hwang、Hyun Jin Kim、Sukbok Chang
DOI:10.1021/ol901854f
日期:2009.10.15
A facile protocol for the Pd-catalyzed preparative synthesis of fluorene derivatives has been developed. While a wide range of fluorenes; were easily obtained with high efficiency and selectivity under mild conditions, excellent functional group tolerance was also demonstrated. On the basis of Hammett and KIE studies, the present reaction is proposed to proceed via a base-assisted deprotonative metalation pathway.