Abstract
5,7-Dihydroxy-4-methyl- and 5,7-dihydroxy-4-trifluoromethylcoumarins are starting compounds in the synthesis of new 10-methyl-8H-difuro[2,3-f;2,3-h]-8-ones and 10-trifluoromethyl-8H-difuro-[2,3-f;2,3-h]chromen-8-ones with high yields.
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Traven, V.F., Podkhalyuzina, N.Y. & Kanevskii, D.S. Synthesis of New Difurocoumarins. Chemistry of Heterocyclic Compounds 39, 866–871 (2003). https://doi.org/10.1023/A:1026186002637
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DOI: https://doi.org/10.1023/A:1026186002637