Copper‐Catalyzed Synthesis of Substituted 4‐Quinolones using Water as a Benign Reaction Media: Application for the Construction of Oxolinic Acid and BQCA
作者:Babasaheb Sopan Gore、Chein Chung Lee、Jessica Lee、Jeh‐Jeng Wang
DOI:10.1002/adsc.201900286
日期:2019.7.11
−NO2, −SO2Ar, and −COAr were also successful. In addition, reaction with heterocyclic compounds such as 3‐(3‐bromothiophen‐2‐yl)‐3‐oxopropanenitrile proceeded smoothly to afford tetrahydrothieno[3,2‐b]pyridine‐6‐carbonitrile analogues. The practicality of the designed protocol was confirmed by gram scale synthesis of two derivatives.
已开发出一种铜催化的三组分合成方法,用于从取代的3-(2-卤代苯基)-3-氧代丙烷,醛和水溶液合成取代的4-喹诺酮衍生物。NH 3使用水作为对环境无害的反应介质。此外,所获得产品的合成效用已成功地用于合成可用的亚氧酸和BQCA药物。该方法的关键特征包括可商购的起始原料,广泛的范围以及中等至良好的反应产率。与甲醛反应,以及其他官能团,例如-CN,-NO 2,-SO 2Ar和-COAr也成功。此外,与杂环化合物(如3-(3-溴噻吩-2-基)-3-氧代丙烷腈)的反应进行得很顺利,得到了四氢噻吩并[3,2 - b ]吡啶-6-腈的类似物。两种衍生物的克级合成证实了所设计方案的实用性。