Chemistry of the Diazo-Compounds

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The diam-compounds were discovered in 1858 by Johann Peter Griess,* who Obtained them by treating aromatic amino compounds with nitrous acid. Piria had already found, in 1849, that asparagine or aminosuccinamic acid is converted into malic acid by the action of nitrous acid, the amino-group.