Oskar Doebner (1850-1907)

German chemist, professor at the University of Halle. He described the variant of the Knoevenagel condensation with malonic acid in pyridine, in which decarboxylation follows condensation spontaneously (Doebner modification).

With Wilhelm von Miller he also developed the quinoline synthesis that bears both their names (Doebner–Miller reaction, 1881).

More information: de.wikipedia.org