Synthesis of 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-dione and its analogues and their reactions with nucleophiles
摘要:
Novel 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-dione derivatives and its analogues were synthesized directly from chloranil and different 2-amino(di)azines without using a catalyst or activation. Further nucleophilic substitution reactions were carried out. (C) 2013 Elsevier Ltd. All rights reserved.