Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 20, Issue 20, Pages 4215-4223Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ob00526c
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Funding
- Science and Engineering Research Board (SERB), New Delhi [CRG/2020/002220]
- DST-FIST [SR/FST/CSI-270/2015]
- CSIR New Delhi
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An efficient cobalt-catalyzed tandem one-pot method has been developed for the synthesis of polysubstituted imidazo[1,5-a]-N-heteroaromatics, which involves Knoevenagel condensation followed by cobalt-catalyzed direct alkenylation. This method shows a broad substrate scope, moderate to good yields (39-74%), and scalability to gram scale.
An efficient cobalt-catalyzed tandem one-pot method has been developed for the synthesis of polysubstituted imidazo[1,5-a]-N-heteroaromatics. The method involves Knoevenagel condensation followed by cobalt-catalyzed direct alkenylation to give the desired polysubstituted imidazo[1,5-a]pyridines and imidazo[1,5-a]isoquinolines in a one-pot manner. This method exhibits a broad substrate scope, provides moderate to good (39-74%) yields and is amenable to scale-up to the gram scale.
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