Conclusions
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1.
The alkylation of 2,2,4-trimethyl-1,2-dihydroquinoline and its derivatives by hexafluoroacetone occurs regioselectively and leads, depending on the conditions, to 6-(2-hydroxyhexafluoro-2-propyl)-2,2,4-trimethyl-1,2-dihydroquinolines or the 6,8-disubstituted products.
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2.
The reaction of methyl trifluoropyruvate with 2,2,4-trimethyl-1,2-dihydroquinoline gave the product of C8-alkylation, accompanied by lactamization.
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3.
The oxidation of 6-(2-hyhdroxyhexafluoro-2-propyl)-2,2,4-trimethyl-1,2-dihydroquinoline by hydrogen peroxide in the presence of sodium tungstenate gave a stable nitroxyl radical.
Literature cited
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 472–475, February, 1989.
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Komarov, K.V., Chkanikov, N.D., Suskina, V.I. et al. Reactions of 2,2,4-trimethyl-1,2-dihydroquinoline and its derivatives with hexafluoroacetone and methyl trifluoropyruvate. Russ Chem Bull 38, 415–417 (1989). https://doi.org/10.1007/BF00953643
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DOI: https://doi.org/10.1007/BF00953643