Transition metal-catalyzed process for addition of amines to carbon-carbon double bonds
申请人:Yale University
公开号:US06384282B2
公开(公告)日:2002-05-07
The present invention is directed to a process for addition of amines to carbon-carbon double bonds in a substrate, comprising: reacting an amine with a compound containing at least one carbon-carbon double bond in the presence a transition metal catalyst under reaction conditions effective to form a product having a covalent bond between the amine and a carbon atom of the former carbon-carbon double bond. The transition metal catalyst comprises a Group 8 metal and a ligand containing one or more 2-electron donor atoms. The present invention is also directed to enantioselective reactions of amine compounds with compounds containing carbon-carbon double bonds, and a calorimetric assay to evaluate potential catalysts in these reactions.
[EN] PGD2 RECEPTOR ANTAGONISTS FOR THE TREATMENT OF INFLAMMATORY DISEASES<br/>[FR] ANTAGONISTES DE RECEPTEUR DE LA PROSTAGLANDINE D2 POUR LE TRAITEMENT DE MALADIES INFLAMMATOIRES
申请人:MILLENNIUM PHARM INC
公开号:WO2005100321A1
公开(公告)日:2005-10-27
Disclosed herein are compounds represented by Structural Formula: (I) and (I-A). Also disclosed is the use of such compounds for inhibiting the G-protein coupled receptor referred to as chemoattractant receptor-homologous molecule expressed on Th2, or simply 'CRTH2' for the treatment of inflammatory disorders. The variables in Structural Formula (I) and (I-A) are defined herein.
On the mechanism of Ni(<scp>ii</scp>)-promoted Michael-type hydroamination of acrylonitrile and its substituted derivatives
作者:S. Lapointe、D. Zargarian
DOI:10.1039/c6dt02105k
日期:——
hydroamination of acrylonitrile and its substituted derivatives promoted by Ni(II) complexes is believed to proceed via an outer-sphere nucleophilic attack on the cationic adduct of the nitrile-coordinated substrate. As a test for the validity of this mechanistic postulate, we have sought to establish a correlation between the electrophilic character of the Ni(II) center and the degree to which it can
Ni(II)配合物促进的丙烯腈及其取代衍生物的迈克尔型加氢胺被认为是通过外球亲核攻击腈配位的底物的阳离子加合物而进行的。作为对该机械假设的有效性的测试,我们试图在Ni(II)中心的亲电子特性与其可以激活底物对胺类进行亲核攻击的程度之间建立相关性。通过筛选阳离子乙腈加合物[(R-POCOP)Ni(NCCH 3)] [OSO 2 CF 3]轴承供电子性或配体POCOP(R-POCOP =κ的中心芳环上的吸电子取代基R P,κ Ç,κ P -2,6-(I-PR 2 PO)2 -4- RC 6 H 2; R = OMe(3),COOMe(4))。发现将伯胺添加到巴豆腈,甲基丙烯腈和肉桂腈中的催化活性取决于所用的前体和胺以及反应时间。这些研究得到配体交换研究的补充,该研究确定了典型氢化胺化混合物主要成分之间的相对结合顺序(RCN>胺> OSO 2 CF3),因此支持阳离子腈加合物构成催化歧管中的静止
PGD2 receptor antagonists for the treatment of inflammatory diseases
申请人:Ghosh Shomir
公开号:US20050256158A1
公开(公告)日:2005-11-17
Disclosed herein are compounds represented by Structural Formula (I) and (I-A):
Also disclosed is the use of such compounds for inhibiting the G-protein coupled receptor referred to as chemoattractant receptor-homologous molecule expressed on Th2, or simply “CRTH2” for the treatment of inflammatory disorders. The variables in Structural Formula (I) and (I-A) are defined herein.
Anti-Markovnikov N−H and O−H Additions to Electron-Deficient Olefins Catalyzed by Well-Defined Cu(I) Anilido, Ethoxide, and Phenoxide Systems
作者:Colleen Munro-Leighton、Elizabeth D. Blue、T. Brent Gunnoe
DOI:10.1021/ja057622a
日期:2006.2.1
The monomeric Cu(I) complexes (IPr)Cu(Z) (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene, Z = NHPh, OEt, or OPh) react with YH (Y = PhNH, PhCH2NH, EtO, or PhO) to catalytically add Y-H bonds across the C=C bond of electron-deficient olefins to yield anti-Markovnikov organic products. Catalytic activity has been observed for olefins CH2C(H)(X) with X = CN, C(O)Me, or CO2Me as well as crotononitrile. Preliminary studies implicate an intermediate in which the C-Y bond forms through a nucleophilic addition pathway.