A simple synthesis of 4-amino-6-methyl-1,1,1-trifluoro(trichloro)hepta-3,5-dien-2-ones and 2,2-dimethyl-6-trifluoromethyl-2,3-dihydro-4-pyridone |
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Authors: | V Ya Sosnovskikh |
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Institution: | (1) A. M. Gor'ky Ural State University, 51 prosp. Lenina, 620083 Ekaterinburg, Russian Federation |
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Abstract: | Treatment of 2,2-dimethyl-6-trifluoro(trichloro)methyl-2,3-dihydro-4-pyrones with ammonia gives 4-amino-1,1,1-trifluoro(trichloro)-6-methylhepta-3,5-dien-2-ones.
Under similar conditions 1,1,1-trifluoro-2-hydroxy-6-methylhepta-2,5-dien-4-one and 6-chloro-1, 1,1-trifluoro-2-hydroxy-6-methylhept-2-en-4-one
cyclize into 2,2-dimethyl-6-trifluoromethyl-2,3-dihydro-4-pyridone.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2263–2265, December, 1997. |
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Keywords: | aminodienones β -diketones dihydropyrones ammonia heterocyclization 2 3-dihydro-2 2-dimethyl-6-trifluoromethyl-4-pyridone |
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