Simple synthesis of 3-hydroxyquinolines via Na2S2O4-mediated reductive cyclization of (2-(2-nitrophenyl)oxiran-1-yl)(aryl)methanones (o-nitrobenzalacetophenone oxides)

Autor: Shamil K. Latypov, Dmitry E. Korshin, Ekaterina V. Mironova, Vera L. Mamedova, Gul'naz Z. Khikmatova, Il'dar Kh. Rizvanov, Olga B. Bazanova, Vakhid A. Mamedov, Victor V. Syakaev
Rok vydání: 2017
Předmět:
Zdroj: Tetrahedron. 73:5082-5090
ISSN: 0040-4020
Popis: 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 4-bromo substituted derivatives which may provide a promising potential application in exploring biologically active analogs of 3-hydroxyquinolines.
Databáze: OpenAIRE