Gram-Scale Synthesis of β-(Hetero)arylethenesulfonyl Fluorides <i>via</i>
a Pd(OAc)<sub>2</sub>
Catalyzed Oxidative Heck Process with DDQ or AgNO<sub>3</sub>
as an Oxidant
作者:Gao-Feng Zha、Grant A. L. Bare、Jing Leng、Zhen-Peng Shang、Zhixiong Luo、Hua-Li Qin
DOI:10.1002/adsc.201700688
日期:2017.9.18
gram‐scale operation without the requirement for strict anhydrous or oxygen‐free conditions. Furthermore, this procedure discriminates against the formation of arylboronic acids homo‐coupling byproducts. In addition, the preparation of the first aryl vinylsulfonate polymer, a material with functionalizable Michael acceptor sites, from a starting arylboronic acid is described.
开发了一种实用的有机硼酸与乙磺酰氟(ESF)之间的氧化Heck反应。在催化量的Pd(OAc)2和2,3-二氯-5,6-二氰基对苯醌(DDQ)或AgNO 3在AcOH中存在的情况下,芳基和杂芳基硼酸与ESF高效且立体选择性地反应负担相应的Eβ-芳烷基磺酰氟产品的异构体。该反应的实用性在47个实例的扩展范围中得到了体现,其中包括含N,O和S的杂芳族化合物,证明了对芳基碘化物的化学选择性以及克级操作,而无需严格的无水或无氧条件。此外,此程序可区别芳基硼酸均偶联副产物的形成。另外,描述了由起始芳基硼酸制备第一芳基乙烯基磺酸酯聚合物,其是具有可官能化的迈克尔受体位点的材料。