Synthesis of New Biheterocycles by a One-Pot Sonogashira Coupling Reaction
摘要:
Halogenated flavones, isoflavones and indoles were subjected to a one-pot Sonogashira coupling reaction to generate a series of new biheterocyclic compounds. The methodology can be readily adapted to the synthesis of a wide variety of substituted biheterocycles.
Synthesis of New Biheterocycles by a One-Pot Sonogashira Coupling Reaction
摘要:
Halogenated flavones, isoflavones and indoles were subjected to a one-pot Sonogashira coupling reaction to generate a series of new biheterocyclic compounds. The methodology can be readily adapted to the synthesis of a wide variety of substituted biheterocycles.
Synthesis of gem-difluoromethylenated biflavonoid via the Suzuki coupling reaction
作者:Xing Zheng、Wei-Dong Meng、Feng-Ling Qing
DOI:10.1016/j.tetlet.2004.08.180
日期:2004.10
gem-Difluoromethylenated biflavonoid 1 was synthesized via the Suzukicouplingreaction. The key intermediate 6-iodonated flavone 4 was regioselectively synthesized by the use of AgOAc/I2 under mild conditions without handling of a strongly toxic reagent. The key step was the formation of a flavone 3′-boronate 3 using a palladium-catalyzed exchange of the corresponding 3′-iodonated flavone with a diboron
通过Suzuki偶联反应合成了宝石-二氟甲基化的双黄酮1。通过在温和条件下使用AgOAc / I 2选择性地合成关键的中间体6-碘化黄酮4,而无需使用强毒性试剂。关键步骤是使用钯催化的相应3'-碘化黄酮与二硼试剂的交换,形成黄酮3'-硼酸酯3。
Synthesis of New Biheterocycles by a One-Pot Sonogashira Coupling Reaction
作者:David StC Black、Naresh Kumar、Mandar Deodhar
DOI:10.3987/com-10-s(e)100
日期:——
Halogenated flavones, isoflavones and indoles were subjected to a one-pot Sonogashira coupling reaction to generate a series of new biheterocyclic compounds. The methodology can be readily adapted to the synthesis of a wide variety of substituted biheterocycles.