Article

Heterocycle-Heterocycle Strategies: (2-Nitrophenyl)isoxazole Precursors to 4-Aminoquinolines, 1H-Indoles, and Quinolin-4(1H)-ones

Department of Chemistry, University of California , Davis, One Shields Avenue, Davis, California 95616, United States.
Organic Letters (Impact Factor: 6.32). 04/2013; 15(8). DOI: 10.1021/ol400787y
Source: PubMed

ABSTRACT Reductive heterocycle-heterocycle (heterocycle → heterocycle; H-H) transformations that give 4-aminoquinolines, 3-acylindoles, and quinolin-4(1H)-ones from 2-nitrophenyl substituted isoxazoles are reported. When this methodology is applied to 3,5-, 4,5-, and 3,4-bis(2-nitrophenyl)isoxazoles, chemoselective heterocyclization gives quinolin-4(1H)-ones, and 4-aminoquinolines, exclusively.

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Jun 17, 2014