反应详情

By reaction of 4-chloroimidazo[1,2-a]quinoxaline (example 1) with ethanolamine according to a procedure that is similar to that followed in example 3 there is obtained 4-(2-hydroxyethylamino)imidazo[1,2-a]quinoxaline. m.p. (DSC)=150.8° C. (onset); IR (KBr): 3312, 1598, 1564 cm-1 ; 1H-NMR (CDCl3 /CD3OD): δ8.2 (1H,s), 8.1÷7.55 (2H,m), 7.55 (1H,s), 7.4÷7.2 (2H,m), 3.8 (4H,s); UV (EtOH): λmax =227, 285, 297, 317, 330 nm. Elementary analysis for C12H12N4 (m.w. 228.25): calcd. C 63.14, H 5.30, N 24.55%; found C 63.16, H 5.40, N 24.99%.