Palladium-Catalyzed 2,2,2-Trifluoroethoxylation of Aromatic and Heteroaromatic Chlorides Utilizing Borate Salt and the Synthesis of a Trifluoro Analogue of Sildenafil
作者:Bálint Pethő、Márton Zwillinger、János T. Csenki、Anna E. Káncz、Balázs Krámos、Judit Müller、György T. Balogh、Zoltán Novák
DOI:10.1002/chem.201704205
日期:2017.11.7
A simple and convenient method was developed for the introduction of a 2,2,2‐trifluoroethoxy group to various aromatic and heteroaromatic systems. The novel process utilizes aromatic chlorides as substrates, and tetrakis(2,2,2‐trifluoroethoxy) borate salt as an inexpensive and readily available fluoroalkoxy source in a palladium‐catalyzed cross‐coupling reaction. The power of the developed methodology
开发了一种简单方便的方法,可将2,2,2-三氟乙氧基引入各种芳族和杂芳族体系。该新方法利用芳族氯化物作为底物,并在钯催化的交叉偶联反应中使用四(2,2,2-三氟乙氧基)硼酸盐作为廉价且易于获得的氟代烷氧基源。西地那非的氟衍生物的合成证明了所开发方法的力量。