STUDY OF PLANT COUMARINS. 12. SYNTHESIS OF 2-(1,2,3-TRIAZOLYL)-MODIFIED FUROCOUMARINS
DOI:
https://doi.org/10.1007/552Keywords:
alkynes, 2-bromooreoselone, dicoumarins, triazolylfurocoumarinsAbstract
Bromooreoselone reacted with sodium azide to give 2-azidooreoselone, which was highly reactive in a catalytic Huisgen reaction with various terminal alkynes. These reactions yielded 4-substituted 2‑(triazol-1‑yl)furocoumarins. The reaction of oreoselone azide with dimethyl acetylene-1,2-dicarboxylate gave 2-[(4,5-dimethoxycarbonyl)triazolyl]oreoselone and reaction with 7-ethynyl-6‑methoxycarbonylcoumarin gave 1,4‑dicoumarin-substituted 1,2,3-triazole.
Authors: A. V. Lipeeva, E. E. Shults, E. A. Makhneva, M. M. Shakirov, and G. A. Tolstikov
English Translation in Chemistry of Heterocyclic Compounds, 2013, 49 (4), pp 551-560