Synthesis of 4-arylcoumarins via palladium-catalyzed arylation/cyclization of ortho-hydroxylcinnamates with diaryliodonium salts
作者:Yang Yang、Jianwei Han、Xunshen Wu、Shujia Xu、Limin Wang
DOI:10.1016/j.tetlet.2015.04.082
日期:2015.6
ortho-hydroxylcinnamate ester derivatives by using diaryliodonium(III) salts has been developed. With this method, 4-arylcoumarins were easily prepared in good to excellent yields under base-free conditions. Additionally, this protocol provided an efficient alternative for the preparation of related 4-arylated coumarin compounds which are useful in the access to 5-lipoxygenase inhibitors.
已经开发了使用二芳基碘鎓(III)盐的钯催化的邻羟基肉桂酸酯衍生物的芳基化/环化反应。用这种方法,可以容易地在无碱条件下以良好的产率制备4-芳基香豆素。另外,该方案为制备相关的4-芳基香豆素化合物提供了有效的替代方法,该化合物可用于获得5-脂氧合酶抑制剂。