Palladium-Catalyzed Synthesis of 2-Fluoroalkyl-3-methylene-3H-indoles Through a Domino Carbopalladation/CH Activation Process
作者:Zixian Chen、Jiangtao Zhu、Haibo Xie、Shan Li、Yongming Wu、Yuefa Gong
DOI:10.1002/adsc.201000689
日期:2011.2.11
A novel palladium-catalyzed synthesis of substituted 3-methylene-3H-indoles from readily accessible alkynylimines has been developed. A wide variety of 2-fluoroalkyl-3-methylene-3H-indoles were synthesized in moderate to good yields through this cascade carbopalladation/CHactivation process. This reaction can also be expanded to non-fluorinated substrates.
Radical selenylative cyclization of trifluoromethyl propargyl imines for the synthesis of trifluoromethyl- and seleno-azaspiro[4,5]-tetraenones and quinolines
A radical selenylative cyclization of trifluoromethyl propargyl imines with diselenides for the regiodivergent construction of diversely functionalized azaspiro[4,5]-tetraenones and quinolines has been developed, which enables dual incorporation of CF3 and Se groups into heterocycles in a one-pot reaction. When using Oxone as a green oxidant, the reaction proceeds through oxidative dearomative ipso-annulation
已经开发了三氟甲基炔丙基亚胺与二硒化物的自由基硒化环化反应,用于区域发散构建不同功能化的氮杂螺[4,5]-四烯酮和喹啉,这使得能够在一锅反应中将CF 3和 Se 基团双重结合到杂环中。当使用Oxone作为绿色氧化剂时,反应通过氧化脱芳烃自身环化或分子内邻位环化进行,表现出良好的区域选择性。通过放大反应和对所得产物的进一步修饰证明了该方法的合成效用。