State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China.
J Zhejiang Univ Sci B. 2010 Feb;11(2):102-8. doi: 10.1631/jzus.B0900288.
Both 1,5-benzodiazepine and quinoxaline derivatives are important heterocycles in pharmaceuticals. We describe an efficient and clean method for the synthesis of 1,5-benzodiazepines from o-phenylenediamine and ketones catalyzed by sodium tetrachloroaurate(III) dihydrate under mild conditions. The catalyst was shown to be equally effective for the synthesis of quinoxalines from o-phenylenediamine and alpha-bromo ketones under the similar reaction conditions. This method produced good yields.
1,5-苯并二氮杂卓和喹喔啉衍生物都是药物中重要的杂环。我们描述了一种在温和条件下,由邻苯二胺和酮在四氯金酸钠三水合物催化下合成 1,5-苯并二氮杂卓的有效而清洁的方法。该催化剂在类似的反应条件下,同样可以有效地从邻苯二胺和α-溴代酮合成喹喔啉。该方法产率良好。