An Efficient and Green Protocol for the Synthesis of 1,5-benzodiazepine and Quinoxaline Derivatives Using Protic Pyridinium Ionic Liquid as a Catalyst

2-Methylpyridinium trifluoromethanesulfonate ([2-MPyH]OTf) catalyzed synthesis of 1,5benzodiazepine and quinoxaline derivatives in the reaction of between o-phenylenediamine and ketone (synthesis of 1,5-benzodiazepine derivatives) or 1,2-diketone (synthesis of quinoxaline derivatives) in high yields and short time reaction. The catalyst can be separated from the products by a change in the solvent. The catalyst is reusable.