Journal
RSC ADVANCES
Volume 6, Issue 91, Pages 88904-88910Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra17520a
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- Centre of CAS-V (Synthesis and functional materials) of the department of Chemistry, University of Calcutta
- University of Calcutta
- DST, New Delhi, India
- U. G. C. New Delhi, India
- DST-FIST, India
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GO nanosheets are found to be an efficient recyclable carbocatalyst for the construction of diversified dibenzo[1,4] diazepine nuclei starting from o-phenylenediamine, various aldehyde/ketone and 1,3-diketo compounds in aqueous medium. This new metal free synthetic protocol also facilitated the formation of coumarine and quinolinone fused novel dibenzo[1,4]diazepines and provided an excellent yield of the corresponding products. In addition, when a substrate contains both the aldehyde and ketone functionality, the reacton offers dibenzo[1,4] diazepines resulting from the chemoselective aldehyde adduct.
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