297151-39-4

Upstream product

• 70-11-1 α-bromoacetophenone 
• 297151-30-5 2,3-dihydro-imidazo[1'',2'':1',6']pyrimido[4',5':5,4]thieno[2,3-b]quinoxalin-5(6H)thione 
• 113983-96-3 2-amino-3-carbonitrile-thieno[2,3-b]quinoxaline 
• 297151-21-4 2-amino-3-(4,5-dihydro-1H-imidazol-2-yl)thieno[2,3-b]quinoxaline 

Relevant academic research and scientific papers

Synthesis and reactions of some imidazopyrimido (pyrido)thieno [2,3-b]quinoxaline derivatives

2-Amino-3(4,5-dihydro-1H-imidazol-2-yl)thieno[2,3-b]quinoxaline 2 was prepared and then allowed to react with nitrous acid, triethyl orthoformate, acetic anhydride and carbon disulfide to give the imidazotriazinothienoquinoxaline 3 and imidazopyrimidothienoquinoxaline 4-6 respectively. Starting with thione 6 a series of S-ubstituted mercapto derivatives 7-10 was obtained. Reaction of 2-amino-3-carbonitrile-thieno[2,3-b]quinoxaline 1 with acrylonitrile, malononitrile and/or arylidine malononitrile gave pyridothienoquinoxaline derivatives 11-13.