A novel organozinc reagent 4-coumarinylzinc bromide; preparation and application in the synthesis of 4-substituted coumarin derivatives
作者:Reuben D. Rieke、Seung-Hoi Kim
DOI:10.1016/j.tetlet.2011.03.151
日期:2011.6
A novel organozinc reagent, 4-coumarinylzinc bromide, was prepared by the direct oxidative addition of active zinc to 4-bromocoumarin. The resulting organozinc bromide underwent the palladium-catalyzed cross-coupling reactions with a variety of aryl halides and acid chlorides affording the corresponding coupling products in good yields under mild conditions.
通过将活性锌直接氧化加成到4-溴香豆素中,制得了一种新型的有机锌试剂溴化4-香豆素锌。所得的有机溴化锌与钯的各种芳基卤化物和酰氯进行交叉催化的交叉偶联反应,在温和的条件下以良好的收率得到相应的偶联产物。