A great German organic chemist of his time, he received the 1905 Nobel Prize in Chemistry for his researches on organic dyes and hydroaromatic compounds. Most famous were his researches on the constitution and synthesis of the plant pigment indigo (1883), the discovery of barbituric acid (1863) phenolphthalein and fluorescein (1871), and the "strain theory" of triple bonds and small carbon rings. Three of his students (E. Fischer, E. Büchner, R. Willstätter) received Nobel prizes.
Location in chemistry building:
First Floor; Room 136 North Wall; Sequence 2