Synthesis of some New Quinoxalines with expected Pharmacological Activities

4-Methylphenylenediamine 1 was reacted with alpha-dicarbonyls to give quinoxalines 2a-g, 4a-d and/or 7a-c. Quinoxalines 7a-c were converted into dihydropyridazinoquinoxalines 9a-c, thienoquinoxalines 10a-c and/or dichloroquinoxalines 11a-c. Compounds 11a-c were converted into ethoxyquinoxalines 12a-c, arylaminoquinoxalines 13a-f and/or quinazolinoquinoxalines 14a-c. The reaction of 11a-c: with semicarbazide and/or sodium azide was also described.