Otto Dimroth

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Otto Dimroth at the LMU Munich 1893
Otto Dimroth in Würzburg in 1935

Otto Dimroth (born March 28, 1872 in Bayreuth , † May 16, 1940 in Aschaffenburg ) was a German chemist .

Life

After completing his school and study days , he received his doctorate in 1895 under Johannes Thiele at the LMU Munich with a thesis on experiments with o- and p-nitrobenzyl chloride . He then worked as a chemist at Bayer AG's Elberfeld plant from 1895–1897 , before returning to LMU Munich in 1897 as an assistant to Adolf von Baeyer .

In 1898 he switched to a post-doctoral position with Hans von Pechmann in Tübingen and completed his habilitation in 1900 with a thesis on the direct introduction of mercury into aromatic compounds . In 1904 he became an adjunct professor in Tübingen , as von Pechmann died unexpectedly in 1902.

In 1905 he accepted a call for an extraordinary position in Munich. During his time in Munich he married his first wife Aloysia, and this marriage had four children. His son Karl Dimroth , born in 1910 , also became a chemist.

In 1910 he tried in vain to succeed Julius Tafel at the Chemisches Institut in Würzburg , who had to resign for health reasons. At this time, the Nobel Prize winner Eduard Buchner was preferred . In 1913 he instead took over the management of the Chemical Institute in Greifswald as the successor to Karl von Auwers .

In 1918 he was appointed to succeed E. Buchner, who had fallen in the war, to Würzburg and stayed until his retirement in 1937. From 1929 he was a corresponding member of the Bavarian Academy of Sciences .

After his habilitation, he turned to heterocycle syntheses (e.g. Dimroth rearrangement ), and from 1910 he dealt with the elucidation and synthesis of natural dyes. He later expanded his research area to include physico-chemical problems. The well-known Dimroth cooler originated from his experimental experience as well as the saying passed down every semester that "the careful measurement of a melting point takes a cigar".

Predecessor at the chemical institute in Würzburg

WÜ chem. Institute ca.1900.jpg
  • Joseph von Scherer (1842–1869 †; Juliusspital, from 1867 new chemical institute in Maxstrasse 4)
  • Adolph Strecker (1869–1871 †; Chem. Institute in Maxstr. 4)
  • Johannes Wislicenus (1872–1885; Chem. Institute in Maxstrasse 4)
  • Emil Fischer (1885–1892; Chem. Institute in Maxstrasse 4)
  • Arthur Hantzsch (1893–1903; Chem. Institute at Maxstr. 4, from 1896 new Chem. Inst. At Pleicher Ring 11)
  • Julius Tafel (1903–1910; Chem. Institute at Röntgenring 11 ( renamed street name from 1909 ))
  • Eduard Buchner (1911–1917 †; Chem. Institute at Röntgenring 11)

Web links

Individual evidence

  1. ↑ Klaus Koschel and Gerhard Sauer in "On the History of the Chemical Institute of the University of Würzburg", page 65f, self-published by the University of Würzburg, 1968.
  2. ↑ Life data, publications and academic family tree of Otto Dimroth at academictree.org, accessed on January 30, 2018.
  3. ↑ In the much-cited obituary from 1941 (L. Ebert: Otto Dimroth. 1872–1940. In: Reports of the German Chemical Society (A and B Series). 74, 1941, pp. A1 – A23, doi : 10.1002 / cber.19410740124 ) The mistake apparently crept in that Otto Dimroth did his doctorate in Strasbourg in 1895 . The doctorate certainly took place at his place of study in Munich , because 1) all publications by his doctoral supervisor J. Thiele up to and including 1901 came from Munich , 2) all publications by O. Dimroth including 1895 came from Munich, from 1898 from Tübingen. 3) J. Thiele did not receive the call to Strasbourg until 1902.
  4. ↑ Johannes Thiele, Otto Dimroth: Experiments with o- and p-nitrobenzyl chloride. In: Justus Liebig's Annals of Chemistry. 305, 1899, pp. 102-123, doi : 10.1002 / jlac.18993050109 .
  5. ↑ Otto Dimroth: Direct introduction of mercury into aromatic compounds. In: Reports of the German Chemical Society. 31, 1898, pp. 2154-2156, doi : 10.1002 / cber.189803102162 . ( Digitized on Gallica )
  6. ↑ Successor to the chair in Tübingen in 1902 by Gustav Wilhelm Wislicenus (born January 23, 1861 in Zurich; † June 8, 1922 in Tübingen) family chronicle ( memento of October 6, 2014 in the Internet Archive ).
  7. ↑ University of Tübingen 1945,? 1949? Karl Dimroth University of Marburg 1952–1978 Vita (PDF; 1.3 MB) Brief Vita data .
  8. ↑ Rolf Ukrow († October 28, 2013): “Nobel Prize Winner Eduard Buchner (1860–1917) A life for the chemistry of fermentation and - almost forgotten - for organic chemistry" (PDF; 8.5 MB), dissertation 2004, Berlin , Page 206.
  9. ↑ Successor at the Chem. Institute in Würzburg Franz Gottwalt Fischer (1938–1956).
  10. ↑ Member entry by Otto Dimroth (with a link to an obituary) at the Bavarian Academy of Sciences , accessed on January 26, 2017.
  11. ↑ Research areas Otto Dimroth .
personal data
SURNAME Dimroth, Otto
BRIEF DESCRIPTION German chemist
DATE OF BIRTH March 28, 1872
PLACE OF BIRTH Bayreuth
DATE OF DEATH May 16, 1940
Place of death Aschaffenburg