Kumada Coupling of Aryl, Heteroaryl, and Vinyl Chlorides Catalyzed by Amido Pincer Nickel Complexes
摘要:
A series of amido pincer complexes of nickel were examined for their catalysis in the Kumada cross-coupling reaction. The P,N,O-pincer nickel complexes tested are active catalysts for the cross-coupling of aryl, heteroaryl, and vinyl chlorides with aryl Grignard reagents. The reactions can proceed at room temperature and tolerate functional groups in aryl chlorides with the aid of LiCl and ZnCl2 additives.
Nickel-Catalyzed Cross-Coupling of Non-Activated or Functionalized Aryl Halides with Aryl Grignard Reagents
作者:Lan-Gui Xie、Zhong-Xia Wang
DOI:10.1002/chem.201001022
日期:2010.9.10
New nickel complexes can efficiently catalyze cross‐coupling of unactivated and deactivated aryl chlorides and fluorides with aryl Grignard reagents. The reaction can tolerate functional groups in aryl chlorides with or without the aid of additives, depending on the substrates (see scheme).
Substituted methylene amide derivatives as modulators of protein tyrosine phosphatases (PTPs)
申请人:Laboratoires Serono SA
公开号:US07592477B2
公开(公告)日:2009-09-22
The present invention is related to substituted methylene amide derivatives of formula (I) and use thereof for the treatment and/or prevention of metabolic disorders mediated by insulin resistance or pyperglycemia, comprising diabetes type I and/or II, inadequate glucose tolerance, insulin resistance, hyperlipidemia, hypertriglyceridemia, hypercholesterolemia, obesity, polycystic ovary syndrome (PCOS). In particular, the present invention is related to the use of substituted methylene amide derivatives of formula (I) to modulate, notably to inhibit the activity of PTPs. Also the present invention relates to a method of treating diabetes type II, obesity and to regulate the appetite of mammals. The present invention is furthermore related to novel substituted methylene amide derivatives and method of preparation thereof. Formula (I).
Carbon−Carbon Formation via Ni-Catalyzed Suzuki−Miyaura Coupling through C−CN Bond Cleavage of Aryl Nitrile
作者:Da-Gang Yu、Miao Yu、Bing-Tao Guan、Bi-Jie Li、Yang Zheng、Zhen-Hua Wu、Zhang-Jie Shi
DOI:10.1021/ol901217m
日期:2009.8.6
The Suzuki-Miyaura coupling of aryl nitriles with aryl/alkenyl boronic esters is reported. With this method, the cyano group could be applied as a protecting group of arenes and finally as a leaving group to further construct polyaryl scaffolds.
SUBSTITUTED METHYLENE AMIDE DERIVATIVES AS MODULATORS OF PROTEIN TYROSINE PHOSPHATASES (PTPS)