[EN] NOVEL TETRAHYDROPYRIDOPYRIMIDINES AND TETRAHYDROPYRIDOPYRIDINES FOR THE TREATMENT AND PROPHYLAXIS OF HEPATITIS B VIRUS INFECTION [FR] NOUVELLES TÉTRAHYDROPYRIDOPYRIMIDINES ET TÉTRAHYDROPYRIDOPYRIDINES POUR LE TRAITEMENT ET LA PRÉVENTION D'UNE INFECTION PAR LE VIRUS DE L'HÉPATITE B
Triaminophosphine ligands for carbon-nitrogen and carbon-carbon bond formation
申请人:Iowa State University Research Foundation, Inc.
公开号:US07385058B1
公开(公告)日:2008-06-10
Methods and compounds are provided for the formation of carbon-nitrogen or carbon-carbon bonds comprising reacting an amine or an aryl boronic acid with an aryl halide in the presence of a palladium catalyst, a base, and a compound of formula II:
Application of a New Bicyclic Triaminophosphine Ligand in Pd-Catalyzed Buchwald−Hartwig Amination Reactions of Aryl Chlorides, Bromides, and Iodides
作者:Sameer Urgaonkar、Ju-Hua Xu、John G. Verkade
DOI:10.1021/jo034994y
日期:2003.10.1
The new bicyclic triaminophosphine ligand P(i-BuNCH2)3CMe (3) has been synthesized in three steps from commercially available materials and its efficacy in palladium-catalyzed reactions of aryl halides with an array of amines has been demonstrated. Electron-poor, electron-neutral, and electron-rich aryl bromides, chlorides, and iodides participated in the process. The reactions encompassed aromatic
新的双环三氨基膦配体P(i-BuNCH2)3CMe(3)由市售材料分三步合成,并已证明其在钯催化的芳基卤化物与一系列胺反应中的功效。贫电子,中性电子和富电子芳基溴化物,氯化物和碘化物参与了该过程。反应包括芳族胺(伯或仲)和仲胺(环或无环)。还显示出弱碱Cs 2 CO 3可以与配体3一起使用,从而允许在我们的胺化方案中使用多种官能化的底物(例如,那些含有酯和硝基的底物)。该配体为芳基碘化物的胺化提供了一种非常普通,有效和温和的钯催化剂。尽管3对空气和湿气比较敏感,可以采用简单的程序来避免使用手套箱。比较3在这些反应中与前氮杂磷杂环戊烷P(i-BuNCH2CH2)3N的功效(2)显示,除了2中有转环的机会(但3中没有),这两者之间还存在其他明显的立体电子对比有助于解释Pd / 2和Pd / 3催化体系活性差异的配体。
Catalytic Amination of Phenols with Amines
作者:Kai Chen、Qi-Kai Kang、Yuntong Li、Wen-Qiang Wu、Hui Zhu、Hang Shi
DOI:10.1021/jacs.1c12622
日期:2022.1.26
availability of both phenols and amines, aniline synthesis through direct coupling between these starting materials would be extremely attractive. Herein, we describe a rhodium-catalyzed amination of phenols, which provides concise access to diverse anilines, with water as the sole byproduct. The arenophilic rhodium catalyst facilitates the inherently difficult keto–enol tautomerization of phenols by means of
Aryl chlorides are converted to aniline derivatives using catalytic amounts of Ni(COD)2 (COD = 1,5-cyclooctadiene) and DPPF (DPPF = 1,1‘-bis(diphenylphosphino)ferrocene) or 1,10-phenanthroline in the presence of sodium tert-butoxide. This procedure has a broad substrate scope: electron-rich or electron-poor aryl chlorides, as well as chloropyridine derivatives, can be combined with primary and secondary