aromatic series

There he continued his research on isomerism of the aromatic series.

It is a complex mixture from which many substances have been obtained, especially hydrocarbons of the benzene or aromatic series.

His investigations in the aromatic series include isomerism of the cinnamic acids and the synthesis of tyrosine from phenylalanine (1882).

Many ortho- and para-compounds of the aromatic series (for example, the bromophenols, benzene-para-disulfonic acid) also yield resorcinol on fusion with potassium hydroxide.

His earlier work included an investigation of succinic acid, and the preparation of phenyl cyanide (better known as benzonitrile), the simplest nitrile of the aromatic series.