The reactions of 2-halogenonaphthoquinones (5, 13, 14 and 15) and 2-methyl-1, 4-naphthoquinone (20; vitamin K3) with primary and secondary amines were examined. 1, 3-Dialkyl-1, 2, 3, 4-tetrahydrobenzo[g]quinazoline-5, 10-diones (9) were obtained in moderate yields by treating 20 with formaldehyde in primary amines. A plausible reaction path-way is also presented.
对2-卤代
萘醌(5、13、14和15)和
2-甲基-1,4-萘醌(20;
维生素K3)与一级和二级胺的反应进行了研究。通过在一级胺中用
甲醛处理20,获得了1,3-二烷基-1,2,3,4-四氢苯并[g]
喹唑啉-5,10-二酮(9),产率适中。同时也提出了一个合理的反应路径。