Adolf von Baeyer (1835-1917)

German chemist, professor in Strasbourg and, from 1875, in Munich, where he succeeded Justus von Liebig. He synthesized indigo and established its structure, discovered the phthaleins (such as phenolphthalein) and proposed the theory of ring strain.

In 1899, with Victor Villiger, he described the oxidation of ketones to esters with peracids, the Baeyer–Villiger reaction. He received the 1905 Nobel Prize in Chemistry.

More information: en.wikipedia.org