Coffman, Keith C. Palazzo, Teresa A. Hartley, Timothy P. Fettinger, James C. Tantillo, Dean J. Kurth, Mark J. Heterocycle–Heterocycle Strategies: (2-Nitrophenyl)isoxazole Precursors to 4‑Aminoquinolines, 1<i>H</i>‑Indoles, and Quinolin-4(1<i>H</i>)‑ones Reductive heterocycle–heterocycle (heterocycle → heterocycle; <b>H–H</b>) transformations that give 4-aminoquinolines, 3-acylindoles, and quinolin-4(1<i>H</i>)-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(1<i>H</i>)-ones, and 4-aminoquinolines, exclusively. aminoquinoline;quinolin;heterocycle 2013-04-19
    https://acs.figshare.com/articles/dataset/Heterocycle_Heterocycle_Strategies_2_Nitrophenyl_isoxazole_Precursors_to_4_Aminoquinolines_1_i_H_i_Indoles_and_Quinolin_4_1_i_H_i_ones/2422915
10.1021/ol400787y.s005