New access to the one-pot solvent-free synthesis of 4,5-dihydro-pyrido[2,3-<i>b</i>][1,4]diazepines and 2,3-dihydro-benzo[<i>b</i>][1,4]diazepines by microwave irradiation
作者:Shyamaprosad Goswami、Anita Hazra、Subrata Jana
DOI:10.1002/jhet.148
日期:2009.9
pyridodiazepines and benzodiazepines have been synthesized in solvent and catalyst free microwave condition from aryl/heteroaryl diamines and β-aryl vinyl ketones. The yields of the reactions varied with the substituents attached to the aryl/heteroaryl diamines. This common protocol is equally effective for the synthesis of pyridodiazepines and benzodiazepines with pharmacological interest, though in case
Graphite oxide: a metal free highly efficient carbocatalyst for the synthesis of 1,5-benzodiazepines under room temperature and solvent free heating conditions
作者:Ramen Jamatia、Ajay Gupta、Binoyargha Dam、Mithu Saha、Amarta Kumar Pal
DOI:10.1039/c6gc03110b
日期:——
We report a sustainable and metal free carbocatalyst, graphite oxide, for the synthesis of 1,5-benzodiazepines underroomtemperature and solventfree heating conditions.