Transesterification of (hetero)aryl esters with phenols by an Earth-abundant metal catalyst
作者:Jianxia Chen、E. Namila、Chaolumen Bai、Menghe Baiyin、Bao Agula、Yong-Sheng Bao
DOI:10.1039/c8ra04984j
日期:——
for the transesterification of aryl or heteroaryl esters with phenols which is a challenging and underdeveloped transformation. The simple conditions and the use of heterogeneous alkali metal catalyst make this protocol very environmentally friendly and practical. This reaction fills in the missing part in transesterification reaction of phenols and provides an efficient approach to aryl esters, which
Heterogeneous Suzuki–Miyaura coupling of heteroaryl ester <i>via</i> chemoselective C(acyl)–O bond activation
作者:Hongpeng Ma、Chaolumen Bai、Yong-Sheng Bao
DOI:10.1039/c9ra02394a
日期:——
A site-selective supported palladium nanoparticle catalyzed Suzuki–Miyaura cross-coupling reaction with heteroaryl esters and arylboronic acids as coupling partners was developed. This methodology provides a heterogeneous catalytic route for aryl ketone formation via C(acyl)–O bond activation of esters by successful suppression of the undesired decarbonylation phenomenon. The catalyst can be reused
N4-PHENYL-QUINAZOLINE-4-AMINE DERIVATIVES AND RELATED COMPOUNDS AS ERBB TYPE I RECEPTOR TYROSINE KINASE INHIBITORS FOR THE TREATMENT OF HYPERPROLIFERATIVE DISEASES
申请人:ARRAY BIOPHARMA, INC.
公开号:US20140023643A1
公开(公告)日:2014-01-23
This invention provides compounds of Formula I
wherein B, G, A, E, R
1
, R
2
, R
3
, m and n are as defined herein, which are useful as type I receptor tyrosine kinase inhibitors, and methods of use thereof in the treatment of hyperproliferative disorders in mammals.
N4-Phenyl-Quinazoline-4-Amine Derivatives and Related Compounds as ErbB Type I Receptor Tyrosine Kinase Inhibitors for the Treatment of Hyperproliferative Diseases
申请人:Lyssikatos Joseph P.
公开号:US20110034689A1
公开(公告)日:2011-02-10
This invention provides compounds of Formula I
wherein B, G, A, E, R
1
, R
2
, R
3
, m and n are as defined herein, which are useful as type I receptor tyrosine kinase inhibitors, and methods of use thereof in the treatment of hyperproliferative disorders in mammals.
A novel metal- and catalyst-free dearomative reaction of 2-oxypyridines to construct gem-difluoromethylenated N-substituted 2-pyridones has been developed. The reaction involves an attractive acyl rearrangement from O to CF2 of difluorocarbene-derived pyridinium ylides, which provides a new strategy for the direct introduction of the gem-difluoromethylene group with high efficiency and selectivity as