Halo-2-pyrones in the Ullmann reaction. 1 |
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Authors: | S V Sokolovskaya L K Moldovanova |
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Institution: | (1) Moscow Technological Institute of the Meat and Dairy Industry, 109029 Moscow |
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Abstract: | The Ullmann reaction was used for the first time for the synthesis of poly-2-pyrones. 3-Halo-2-pyrones were obtained by halogenation of the corresponding 6-aryl-2-pyrones. The Ullmann reaction was carried out by heating a mixture of the 3-halo-2-pyrone with activated copper in a stream of an inert gas. The reaction products were the previously undescribed bis-2-pyrones, in which the -pyrone rings are interlinked by means of the 3-C atoms.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 173–176, February, 1979. |
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