Carl Graebe

Carl Gräbe (German: [ˈɡʀɛːbə]; 24 February 1841 – 19 January 1927) was a German industrial and academic chemist from Frankfurt am Main who held professorships in his field at Leipzig, Königsberg, and Geneva. He is known for the first synthesis of the economically important dye, alizarin, with Liebermann, and for contributing to the fundamental nomenclature of organic chemistry.

Gräbe was born in Frankfurt in 1841. He studied at a vocational high school in Frankfurt and Karlsruhe Polytechnic and in Heidelberg. Later he worked for the chemical company Meister Lucius und Brüning (today Hoechst AG). He supervised the production of Fuchsine and researched violet colorants made using iodine. The work with iodine resulted in eye problems, so he returned to academia.

Carl Gräbe received his Ph.D. from the University of Heidelberg in 1862 under the supervision of Robert Wilhelm Bunsen. In 1868 he wrote his habilitation, and became a professor in Leipzig. Gräbe was Professor of Chemistry at the University of Königsberg from 1870 until 1877, and at the University of Geneva from 1878 until 1906. This was a period rich in the development of structural theory and nomenclature, and Gräbe is known for introducing the "ortho", "meta" and "para" nomenclature for naphthalene ring substitution.

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