Palladium-catalyzed domino protodecarboxylation/oxidative Heck reaction: regioselective arylation of coumarin-3-carboxylic acids
作者:Mehdi Khoobi、Fatemeh Molaverdi、Masoumeh Alipour、Farnaz Jafarpour、Alireza Foroumadi、Abbas Shafiee
DOI:10.1016/j.tet.2013.10.089
日期:2013.12
coumarin-3-carboxylic acids is developed. This approach enables controlled protodecarboxylation/regioselective C–H arylation of coumain-3-carboxylic acids in one-pot using a monometallic catalytic system. A wide variety of electron-donating and -withdrawing substituents on both coumarins and arylboronic acid are tolerated under the reaction conditions and 4-aryl coumarins are constructed in high yields.
已开发了一种从香豆素-3-羧酸直接,分步经济地合成新黄酮的方案。这种方法可以使用单金属催化系统,在一锅中控制香豆素-3-羧酸的原羧酸脱羧/区域选择性C–H芳基化。在反应条件下,香豆素和芳基硼酸上都具有多种供电子和吸电子取代基,并且以高收率构建了4-芳基香豆素。