Direct Arylation under Catalysis of an Oxime-Derived Palladacycle: Search for a Phosphane-Free Method
作者:Guofu Zhang、Xiaobao Zhao、Yunbing Yan、Chengrong Ding
DOI:10.1002/ejoc.201101400
日期:2012.2
for the direct arylation of benzothiazole by employing oxime-derived palladacycle 1 as a catalyst was developed. The new catalyst system can be used for 2-arylations by using aryl bromides and iodides. In addition, this method is especially suitable for the intramolecular direct coupling of bromo- and iodoamides, as well aschloroamides, to achieve a rapid synthesis of benzo[c]phenanthridine alkaloids
开发了一种以肟衍生的钯环 1 为催化剂直接芳基化苯并噻唑的无磷烷方法。通过使用芳基溴化物和碘化物,新的催化剂体系可用于 2-芳基化。此外,该方法特别适用于溴和碘酰胺以及氯酰胺的分子内直接偶联,以实现苯并[c]菲啶生物碱的快速合成。