[HSO3-pmim][CH3SO3] as an Efficient Catalyst for the Synthesis of 1,5-Benzodiazepine Derivatives under Ultrasound Irradiation

作者：Li, Cheng; Hao, Qing-Hong; Liu, Hai-Yan; Wang, Chun; Ma, Jing-Jun^*; Zhu, Wen-Gang

来源：Asian Journal of Chemistry, 2013, 25(11): 6243-6246.

DOI：10.14233/ajchem.2013.14340

• 1-Methyl-3-(3-sulphopropyl)imidazolium methyl sulphate
• 1,5-Benzodiazepines
• o-Phenylenediamines
• Ultrasound

1,5-Benzodiazepine derivatives were synthesized in moderate to excellent isolated yields by the condensation reactions of o-phenylenediamine and ketones catalyzed by [1-methyl-3-(3-sulphopropyl) imidazolium methyl sulphate] under ultrasound irradiation using n-hexane as solvent. This method is simple, effective and gives better yields.

• 出版日期2013-9
• 单位河北农业大学