Experience has shown that such mono-derivatives as nitro compounds, sulphonic acids, carboxylic acids, aldehydes, and ketones yield as a general rule chiefly the meta-compounds, and this is independent of the nature of the second group introduced; on the other hand, benzene haloids, amino-, homologo
By condensation of aldehydes with pyruvic acid and naphthylamines, the a-alkyl-naphthoquinoline-y-carboxylic acids are produced; the same reaction takes place with the aromatic amines generally (0.
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