已经实现了由AK 2 S 2 O 8介导的喹喔啉(或苯并噻唑)与甲醇的直接交叉偶联反应,从而生成了2-喹喔啉基(或2-苯并噻唑基)甲醛二甲基乙缩醛。在酸性条件下,2-喹喔啉基甲醛二甲基乙缩醛易于以良好或优异的收率转化成2-喹喔啉基甲醛。初步的机理研究表明,该反应是通过多重键裂解和甲醇与N-杂环之间的形成而进行的,涉及双氧参与的自由基过程。该方法可以通过简单的N的交叉偶联直接合成各种2-喹喔啉基(或2-苯并噻唑基)甲醛二甲基乙缩醛。-在无醛,无酸和无过渡金属的条件下,杂环C–H键和甲醇。
Tyrphostins. 5. Potent Inhibitors of Platelet-Derived Growth Factor Receptor Tyrosine Kinase: Structure−Activity Relationships in Quinoxalines, Quinolines, and Indole Tyrphostins
作者:Aviv Gazit、Harald App、Gerald McMahon、Jefferey Chen、Alexander Levitzki、Frank D. Bohmer
DOI:10.1021/jm950727b
日期:1996.1.1
3-arylquinoxalines were prepared and tested for inhibition of platelet-derivedgrowthfactorreceptortyrosinekinase (PDGF-RTK) activity. The potency of the inhibitors was found to be quinoxalines > quinolines > indoles. Lipophilic groups (methyl, methoxy) in the 6 and 7 positions and phenyl at the 3 position of quinoxalines and quinolines were essential for potency, in contrast to the hydrophilic catechol
HOAc-Mediated Cyclocondensation of 2-Formylazaarenes and Cyclic Amines. Synthesis of Pyrrolo[1,2-<i>a</i>]azaarenes
作者:Meng-Yang Chang、Yan-Shin Wu
DOI:10.1021/acs.joc.8b03148
日期:2019.3.15
In this paper, a concise, easy-operational, high-yield, one-pot method for the synthesis of pyrrolo[1,2-a]azaarenes is described by a straightforward HOAc-mediated double condensation of substituted 2-formylazaarenes (2 equiv) and cyclic amines (1 equiv) in refluxing toluene. Only water is generated as a byproduct. A plausible mechanism is proposed and discussed. This protocol provides a highly effective
在本文中,通过简单的HOAc介导的取代的2-甲酰氮杂芳烃的双缩合反应(2当量),描述了一种简洁,易于操作,高产率的一锅法合成吡咯并[1,2- a ]氮杂芳烃的方法。)和环胺(1当量)在回流的甲苯中。仅产生水作为副产物。提出并讨论了一种可行的机制。该协议通过两个碳-氮(C-N)和一个碳-碳(CC)键形成提供了高效的环化反应。
Multifold Bond Cleavage and Formation between MeOH and Quinoxalines (or Benzothiazoles): Synthesis of Carbaldehyde Dimethyl Acetals
作者:Yunkui Liu、Bo Jiang、Wei Zhang、Zhenyuan Xu
DOI:10.1021/jo302450f
日期:2013.2.1
2-quinoxalinyl (or 2-benzothiazolyl) carbaldehyde dimethyl acetals has been achieved. 2-Quinoxalinyl carbaldehyde dimethyl acetals were readily converted into 2-quinoxalinyl carbaldehydes in good to excellent yields under acidic conditions. Preliminary mechanistic studies suggest that the reaction proceeds via multifold bond cleavage and formation between methanol and N-heterocycles involving a dioxygen-participated
已经实现了由AK 2 S 2 O 8介导的喹喔啉(或苯并噻唑)与甲醇的直接交叉偶联反应,从而生成了2-喹喔啉基(或2-苯并噻唑基)甲醛二甲基乙缩醛。在酸性条件下,2-喹喔啉基甲醛二甲基乙缩醛易于以良好或优异的收率转化成2-喹喔啉基甲醛。初步的机理研究表明,该反应是通过多重键裂解和甲醇与N-杂环之间的形成而进行的,涉及双氧参与的自由基过程。该方法可以通过简单的N的交叉偶联直接合成各种2-喹喔啉基(或2-苯并噻唑基)甲醛二甲基乙缩醛。-在无醛,无酸和无过渡金属的条件下,杂环C–H键和甲醇。