Four-Component Synthesis of Phosphonium Salts: Application Toward an Alternative Approach to Cross-Coupling for the Synthesis of Bis-Heteroarenes
作者:Yi-Ru Chen、Ganapuram Madhusudhan Reddy、Shao-Hao Hong、Ying-Zheng Wang、Jhen-Kuei Yu、Wenwei Lin
DOI:10.1002/anie.201700945
日期:2017.4.24
A series of stable phosphonium salts have been synthesized via a novel four‐component reaction of an arene nucleophile, 2‐heteroatom substituted aryl aldehyde, and phosphine in presence of an acid. The phosphonium salts thus obtained were utilized for the synthesis of a variety of bis‐heteroarenes, providing an efficient alternative method to the classical cross‐coupling strategies.
Reactivities of allenic and olefinic Michael acceptors towards phosphines
作者:Feng An、Harish Jangra、Yin Wei、Min Shi、Hendrik Zipse、Armin R. Ofial
DOI:10.1039/d1cc06786a
日期:——
The kinetics of the reactions of tributylphosphine with allenic and olefinic Michael acceptors in dichloromethane at 20 °C was followed by photometric and NMR spectroscopic methods. Combination with DFT-calculated methyl anion affinities revealed the relevance of retroaddition barriers in phosphine-catalysed reactions when mixtures of allenic and olefinic substrates are used.
三丁基膦与丙二烯和烯属迈克尔受体在二氯甲烷中的反应动力学在 20 °C 下通过光度和核磁共振光谱方法进行跟踪。结合 DFT 计算的甲基阴离子亲和力揭示了当使用烯属和烯属底物的混合物时,膦催化反应中逆加成势垒的相关性。
USE OF PHOSPHONIUM SALTS IN COUPLING REACTIONS AND PROCESS FOR THEIR MANUFACTURE
申请人:Kromm Klemenz
公开号:US20100197969A1
公开(公告)日:2010-08-05
The object of the present invention is the use of phosphonium salts in coupling reactions, and a method for their preparation.