Rapid Synthesis of 2-Alkanol-substituted Pyrrolo[2,3-<i>b</i>
]quinoxalines from Propargylic Alcohols <i>via</i>
Copper-free Sonogashira Coupling Reaction at Room Temperature
efficient procedure is established for the synthesis of 2‐alkanol‐substituted pyrrolo[2,3‐b]quinoxalines by the reaction of N‐alkyl‐3‐chloroquinoxaline‐2‐amines with propargylic alcohols. The reaction is carried out in the absence of any copper salt but in the presence of a catalytic amount of Pd(PPh3)2Cl2 at room temperature. The Sonogashira coupling reaction step in this procedure is fast, producing
通过N-烷基-3-氯喹喔啉-2-胺与炔丙醇的反应,建立了一种实用且有效的程序,用于合成2-链烷醇取代的吡咯并[2,3- b ]喹喔啉。该反应在室温下在不存在任何铜盐但在催化量的Pd(PPh 3)2 Cl 2的存在下进行。此过程中的Sonogashira偶联反应步骤快速,可高产量生产清洁的产品,而不会受到不必要的均偶联Glaser反应产物的污染。还针对三种细菌菌株Luteus Luteus,铜绿假单胞菌(Pseudomonas aeruginosa),和枯草芽孢杆菌。
AMES D. E.; BROHI M. I., J. CHEM. SOC. PERKIN TRANS., PART 1, 1980, NO 7, 1384-1389