A preparative method has been developed for obtaining 2,9,12,15,22-pentaoxa[2.7]orthocyclo-[2]-2,6-pyranophan-28-one. Compounds of the merocyanine dyestuff series have been obtained from it. It was shown that complex formation with metal salts had no effect on their spectral properties.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 841-846, June, 2009.
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Poronik, Y.M., Shandura, M.P., Tolmachev, A.I. et al. Improved method for preparation of dibenzocrown-containing 4H-pyran- 4-one and synthesis of merocyanine dyestuffs from it. Chem Heterocycl Comp 45, 666–671 (2009). https://doi.org/10.1007/s10593-009-0332-5
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DOI: https://doi.org/10.1007/s10593-009-0332-5