[EN] BIS(PHOSPHINE)-CARBODICARBENE CATALYST COMPLEXES AND METHODS OF USING THE SAME<br/>[FR] COMPLEXES CATALYTIQUES DE TYPE BIS(PHOSPHINE)CARBODICARBÈNE ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV NORTH CAROLINA
公开号:WO2015159225A1
公开(公告)日:2015-10-22
An organometallic complex of a tridentate bis(phosphine)-carbodicarbene ligand and a transition metal, is described. In some embodiments the ligand has the structure of Formula (I): The complexes are useful in methods of making an allylic amine carried out by reacting a 1,3-diene with a substituted amine in the presence of such an organometallic complex to produce by intermolecular hydroamination the allylic amine.
Alkylation of amines with allylic alcohols and deep eutectic solvents as metal-free and green promoters
作者:Stephany Zárate-Roldán、M. Concepción Gimeno、Raquel P. Herrera
DOI:10.1039/d3gc01017a
日期:——
A novel approach for the allylic alkylation of anilines, hydrazides, indole derivatives and additional interesting nucleophiles is described, which involves the direct use of a variety of allylic alcohols under very mild conditions, such as room temperature, and the use of sustainable deep eutectic solvents (DESs). The search for the optimum DES to be used in the reaction revealed that a simple mixture
描述了一种苯胺、酰肼、吲哚衍生物和其他有趣的亲核试剂烯丙基烷基化的新方法,该方法涉及在非常温和的条件下(例如室温)直接使用各种烯丙醇,以及使用可持续的低共熔溶剂(DES)。对反应中使用的最佳 DES 的研究表明,氯化胆碱 (ChCl) 和乳酸的简单混合物可为各种底物提供优异的结果,并具有高分离产率。与文献中描述的其他方法相比,该方法代表了显着的改进,因为文献中通常需要高温、更强的反应条件或金属催化剂。在某些情况下,该协议提供了用吲哚衍生物捕获烯丙基碳阳离子的第一个例子。此外,酰胺、氨基甲酸酯、叠氮化物或磺酰胺等具有挑战性的亲核试剂也已成功使用。与文献中报道的关于烯丙醇对胺进行烷基化的其他实例相比,所有这些特征使得该过程成为一种有吸引力的绿色替代方案。使用不对称取代醇的初步机理研究支持该反应可以进行通过S N 1 途径。
BIS(PHOSPHINE)-CARBODICARBENE CATALYST COMPLEXES AND METHODS OF USING THE SAME
申请人:The University of North Carolina at Chapel Hill
公开号:US20170029453A1
公开(公告)日:2017-02-02
An organometallic complex of a tridentate bis(phosphine)-carbodicarbene ligand and a transition metal, is described. In some embodiments the ligand has the structure of Formula (I): The complexes are useful in methods of making an allylic amine carried out by reacting a 1,3-diene with a substituted amine in the presence of such an organometallic complex to produce by intermolecular hydroamination the allylic amine.
Intermolecular Hydroamination of 1,3-Dienes Catalyzed by Bis(phosphine)carbodicarbene–Rhodium Complexes
作者:Matthew J. Goldfogel、Courtney C. Roberts、Simon J. Meek
DOI:10.1021/ja502275w
日期:2014.4.30
(CDC)-based pincer ligand scaffold is reported, along with its application to site-selective Rh(I)-catalyzed intermolecular hydroamination of 1,3-dienes with aryl and alkyl amines. To the best of our knowledge, this is the first example of the use of a well-defined CDC complex as an efficient catalyst. Transformations proceed in the presence of 1.0-5.0 mol % Rh complex at 35-120 °C; allylic amines are obtained