The first 1,8-diheterocyclicnaphthalenes, the 1,8-bis(1′H-1′,2′,3′-triazolyl)naphthalenes (1a–i), have been synthesized by 1,3-dipolar cycloadditions of 1,8-diazidonaphthalene to acetylenic esters or enolates of acetoacetic esters, and have strained structures as revealed by comparison of their spectral properties with those of the corresponding 1-(1′H-1′,2′,3′-triazolyl)naphthalenes.
K. Honda, H. Nakanishi, Y. Nagawa and A. Yabe, J. Chem. Soc., Chem. Commun., 1984, 450 DOI: 10.1039/C39840000450
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