3-Azabicyclo[4.1.0]hepta-2,4-dienes were efficiently synthesized in a reaction of N-propargylic β-enaminones with acetylenedicarboxylates under novel and exceptional catalyst- and base-free conditions in a single step.
![Graphical abstract: Reaction of N-propargylic β-enaminones with acetylene dicarboxylates: catalyst-free synthesis of 3-azabicyclo[4.1.0]hepta-2,4-dienes](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C4RA00136B&imageInfo.ImageIdentifier.Year=2014)
K. Goutham, V. Nagaraju, S. Suresh, P. Raghavaiah and G. V. Karunakar, RSC Adv., 2014, 4, 21054 DOI: 10.1039/C4RA00136B
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