Abstract

Treatment of the methiodides of 4a-methyl-1,2,3,4-tetrahydro-4aH-carbazole, 2-methyl-3H-indole-3-spirocyclopentane, 2-methylbenzothiazole, and 2-methylquinoline with trifluoroacetic anhydride afforded trifluoromethyl ketones. Some reactions of these enaminones with nitrogen-containing nucleophiles are described, attack taking place at the carbon–carbon and the carbon–oxygen double bonds.

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