Diversified facile synthesis of benzimidazoles, quinazolin-4(3H)-ones and 1,4-benzodiazepine-2,5-diones via palladium-catalyzed transfer hydrogenation/condensation cascade of nitro arenes under microwave irradiation
2015
Zhu, Kaicheng | Hao, Jian-Hong | Zhang, Cheng-Pan | Zhang, Jiajun | Feng, Yiqing | Qin, Hua-Li
A highly efficient diversified methodology for preparation of benzimidazole, quinazolin-4(3H)-ones and 1,4-benzodiazepine-2,5-diones is established using a palladium-catalyzed transfer hydrogenation (CTH)/condensation cascade of o-nitroaniline and o-nitrobenzamides in a triethylamine–formic acid azeotropic mixture (2 : 5) under microwave irradiation.
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