2,4,6-Trihydroxytoluene (2-methylphloroglucinol) was used as starting material for the first synthesis of several (Z)-2-arylidene-4,6-dihydroxy-7-methylaurones, including a synthetic analog of the natural 7-methylaureusidin, which is currently obtained mainly from the extract of sedge capitata (Cyperus capitatus). It was shown that the reaction of 2,4,6-trihydroxytoluene with chloroacetonitrile occurred regioselectively, with the formation of 4,6-dihydroxy-7-methylbenzofuran-3(2H)-one, the treatment of which with substituted benzaldehydes gave high yields of the target compounds.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2019, 55(12), 1174–1178
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Shubin, D.A., Kuznetsov, D.N., Kobrakov, K.I. et al. Synthesis of aurone derivatives on the basis of 2,4,6-trihydroxytoluene. Chem Heterocycl Comp 55, 1174–1178 (2019). https://doi.org/10.1007/s10593-019-02597-0
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DOI: https://doi.org/10.1007/s10593-019-02597-0