A general method for the synthesis of structurally diverse quinoxalines and pyrido-pyrazine derivatives using camphor sulfonic acid as an efficient organo-catalyst at room temperature
作者:Gurpreet Kaur、Arvind Singh、Navdeep Kaur、Bubun Banerjee
DOI:10.1080/00397911.2021.1873383
日期:2021.4.3
for the synthesis of a series of structurally diverse quinoxaline derivatives via the condensation reactions of various 1,2-diaminobenzene derivatives and 1,2-dicarbonyls such as phenanthrene-9,10-dione, acenaphthylene-1,2-dione or benzil using a catalytic amount of camphor sulfonic acid as an efficient, commercially available, low cost, organo-catalyst in aqueous ethanol at room temperature. Under
摘要 通过各种1,2-二氨基苯衍生物和1,2-二羰基化合物(如菲-9)的缩合反应,已开发出一种温和,方便,环保,通用的实用方法,用于合成一系列结构多样的喹喔啉衍生物。在室温下,使用催化量的樟脑磺酸作为高效,可商购,低成本的有机催化剂,在乙醇水溶液中制备10-二酮,-1,2-二酮或苯甲腈。在相同的优化条件下,我们还能够合成二苯并[ f,h ]吡啶并[2,3- b ]喹喔啉和10-溴ac [1,2- b ]吡啶并[2,3- e吡啶-2,3-二胺与菲-9,10-二酮或-1,2-二酮的反应中得到]吡嗪。