Aladar Skita

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Aladar Skita (born February 18, 1876 in Vienna , † November 26, 1953 in Baden-Baden ) was an Austro-German chemist, probably of Hungarian descent.

Life

Skita studied chemistry in Vienna and Heidelberg and received his doctorate from Heidelberg University in 1900 , his doctoral supervisor was Ludwig Gattermann . He then moved to the chemical industry at Farbwerke Hoechst for a few years. In 1905 he went to the Technical University of Karlsruhe as an assistant , where he completed his habilitation a year later and in 1911 took over an associate professorship for chemical technology. After stations in Freiburg im Breisgau from 1914 and Kiel from 1921, he finally came to the Technical University of Hanover in 1924 , where he held the chair for organic chemistry until 1947 . In November 1933 he signed the German professors' confession of Adolf Hitler . In 1926 he was elected a member of the Leopoldina .

plant

He developed a hydrogenation method using palladium as a catalyst and used it to synthesize opium alkaloids such as dihydrocodeine . In 1912 he invented a pressure apparatus for catalytic hydrogenation. Today he is best known for the Auwers-Skita rule named after him and Karl Friedrich von Auwers , according to which the cis isomers have higher densities, refractive indices and boiling points in alicyclic cis-trans isomers . The rule is only valid to a limited extent. He is also known for the Skita rule (1920), according to which the catalytic hydrogenation of unsaturated compounds in an acidic medium forms cis and trans isomers in an alkaline medium . However, there are many exceptions to this rule, so that it is of limited use. He did research in the field of terpenes and stereochemistry . In 1929 he succeeded in synthesizing ephedrine .

Fonts

  • Catalytic reactions of organic compounds, 1912

literature

  • Paul Trommsdorff: The faculty of the Technical University of Hanover 1831-1931. Hanover, 1931, p. 22.
  • Lexicon of important chemists by Winfried R. Pötsch (lead); Annelore Fischer; Wolfgang Müller. With the collaboration of Heinz Cassebaum . Bibliographisches Institut, Leipzig 1988 ISBN 3-323-00185-0 , p. 398.

Web links

Individual evidence

  1. ^ Louis Fieser, Mary Fieser: Organische Chemie , Verlag Chemie Weinheim, 2nd edition, 1972, p. 688, ISBN 3-527-25075-1 .
  2. ^ Skita Reports of the German Chemical Society , 53, 1920, 1792.
  3. ↑ Auers Liebig's Annalen der Chemie , 420, 1920, 84.
personal data
SURNAME Skita, Aladar
BRIEF DESCRIPTION Austro-German chemist
DATE OF BIRTH February 18, 1876
PLACE OF BIRTH Vienna
DATE OF DEATH November 26, 1953
Place of death Baden-Baden