Use of co-grinding as a solvent-free solid state method to synthesize dibenzophenazines

Many synthetic methods exist for dibenzoquinoxalines but only a few for dibenzophenazines and their aza derivatives and even less are ‘green’. Some dibenzophenazines and dibenzopyridoquinoxaline have been efficiently obtained with good to excellent yield by a very simple method which does not requir...

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