The First Palladium-Catalyzed Desulfitative Sonogashira-Type Cross-Coupling of (Hetero)aryl Thioethers with Terminal Alkynes
作者:Vaibhav Pravinchandra Mehta、Anuj Sharma、Erik Van der Eycken
DOI:10.1021/ol800054b
日期:2008.3.1
An unprecedented desulfitative Sonogashira-type cross-coupling protocol is exemplified by the synthesis of substituted 5-chloro-3-alkynylpyrazinones from the corresponding 5-chloro-3-(phenylsulfanyl) pyrazin-2(1H)-ones. The applicability of the method is extended to solid-phase linked pyrazin-2(1H)-ones as well as to some oxazinones, pyrazines, and phenyl thioesters.
由相应的5-氯-3-(苯基硫烷基)吡嗪-2(1H)-酮合成取代的5-氯-3-炔基吡嗪酮类化合物,说明了空前的脱硫Sonogashira型交叉偶联方案。该方法的适用范围扩展到固相连接的吡嗪-2(1H)-酮以及一些恶嗪酮,吡嗪和苯基硫代酯。