A green and sustainable approach for the synthesis of 1,5-benzodiazepines and spirooxindoles in one-pot using a MIL-101(Cr) metal–organic framework as a reusable catalyst
作者:Fillip Kumar Sarkar、Ajay Gupta、Ramen Jamatia、Jasha Momo H. Anal、Amarta Kumar Pal
DOI:10.1039/d1nj03176g
日期:——
MIL-101(Cr) has been efficiently utilized for the synthesis of biologically relevant heterocycles such as 1,5-benzodiazepines and spirooxindoles in one-pot. MIL-101(Cr) was prepared via a solvothermal method and characterized by FT-IR, PXRD, SEM, TEM, EDX, and ICP-OES analysis. Thermogravimetric analysis (TGA) described its high thermal stability. Low catalyst loading, easy separation, reusability, and high
Silica gel-supported sulfuric acid catalyzed synthesis of 1,5-benzodiazepine derivatives
作者:D. Shobha、M. Adharvana Chari、K. Mukkanti、K. H. Ahn
DOI:10.1002/jhet.174
日期:2009.9
Silica gel-supported sulfuricacid has been found to be an efficient catalyst for the synthesis of 1,5-benzodiazepines from o-phenylenediamine and ketones in acetonitrile solvent. This method is simple, effective, and environmentally friendly and gives better yields. Compared to the classical reaction conditions, this new method consistently has the advantage of excellent yields (80–97%) and short