Facile protocol for the synthesis of benzothiazole, benzoxazole and N-benzimidazole derivatives using rice husk derived chemically activated carbon
2020; Elsevier BV; Volume: 29; Linguagem: Inglês
10.1016/j.matpr.2020.04.510
ISSN2214-7853
AutoresArchana Asatkar, Trimurti L. Lambat, Sami H. Mahmood, Aniruddha Mondal, Man Singh, Subhash Banerjee,
Tópico(s)Synthesis and Biological Evaluation
ResumoHere, we have demonstrated rice husk derived chemically activated carbon catalyzed synthesis of benzothiazole, benzoxazole and N-benzimidazole derivatives at room temperature in aqueous ethanol by the condensation of 2-aminothiophenol, 2-amino phenol and ortho-phenylene diamine with aromatic aldehydes respectively. The activated carbon showed excellent catalytic activity and furnished superior to excellent yields of desired products (95–98%). The catalyst was separated from reaction combination by simply filtration, washed with ethanol, dried and recycled able to at least eight runs.
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