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. [Please select]
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It may, however, be used if they are previously converted into the naphthylamines, according to the plan proposed by D'Aguiar and Lautemann (_Bull.') [Please select]
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