Simple synthesis of 3-hydroxyquinolines via Na2S2O4-mediated reductive cyclization of (2-(2-nitrophenyl)oxiran-1-yl)(aryl)methanones (o-nitrobenzalacetophenone oxides)
作者:Vakhid A. Mamedov、Vera L. Mamedova、Victor V. Syakaev、Dmitry E. Korshin、Gul'naz Z. Khikmatova、Ekaterina V. Mironova、Olga B. Bazanova、Il'dar Kh. Rizvanov、Shamil K. Latypov
DOI:10.1016/j.tet.2017.06.058
日期:2017.8
An efficient sodium dithionite (Na2S2O4)-mediated method for construction of 3-hydroxyquinolines via in situ Meinwald rearrangement/intramolecular reductive cyclization of o-nitrobenzalacetophenone oxides has been developed. The practical approach is of excellent functional group compatibility with as high as 98% yield under mild reaction conditions. Moreover, further manipulation successfully furnished
已经开发了一种有效的连二亚硫酸钠(Na 2 S 2 O 4)介导的方法,该方法通过原位Meinwald重排/邻硝基苯甲酰苯乙酮氧化物的分子内还原环化反应来构建3-羟基喹啉。实用的方法是在温和的反应条件下具有优异的官能团相容性,且产率高达98%。此外,进一步的操作成功地提供了4-溴取代的衍生物,其可以为探索3-羟基喹啉的生物活性类似物提供有希望的潜在应用。