抄録
The reactions of 3-methoxycarbonylmethylene-2-oxo-1, 2, 3, 4-tetrahydroquinoxaline (1) with N-bromosuccinimide, N-chlorosuccinimide, Br2-H2O, and Cl2-H2O gave 4-halogeno-3-methoxycarbonylmethylene-2-oxo-1, 2, 3, 4-tetrahydroquinoxalines (3a and 3b), while the reactions of 1 with H2O2-HBr and H2O2-HCl afforded 4-halogeno-3-(1-halogeno-1-methoxycarbonyl)-methylene-2-oxo-1, 2, 3, 4-tetrahydroquinoxalines (4a and 4b). Mechanisms are proposed for these halogenations.
