Ferdinand Tiemann

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Ferdinand Tiemann in Berlin around 1880
obituary

Johann Karl Wilhelm Ferdinand Tiemann (born June 10, 1848 in Rübeland , † November 14, 1899 in Meran ) was a German chemist.

life and work

Tiemann studied 1866 first chemistry and pharmacy at the University of Braunschweig and went to the pharmacist exam then in 1869 as an assistant to August Wilhelm von Hofmann at the Friedrich-Wilhelms University . Friedrich Knapp , who was acquainted with Hofmann and Justus von Liebig , had recommended him to study chemistry in Berlin.

Tiemann received his doctorate in 1870 as an external researcher at the University of Göttingen with the thesis Another contribution to the knowledge of derivatives of toluene and guanidine . He interrupted his scientific work because of the Franco-Prussian War and did not continue his assistantship at Hofmann until the summer of 1872.

In 1874, Tiemann and Wilhelm Haarmann discovered a process for producing vanillin from coniferin .

For the large-scale use of this synthetic route, both founded Haarmann's vanilla factory in Holzminden in the summer of 1874 . Ferdinand Tiemann aspired to an academic career and therefore only participated in the company as a silent and advisory partner.

In 1876 he took part in further research on the Reimer-Tiemann reaction discovered by Karl Reimer . Reimer himself became a co-owner of Haarmann's vanilla factory in 1876 .

Tiemann completed his habilitation in 1878 at the University of Berlin and was appointed professor here in 1882. His field of work was the chemistry of fragrances .

Ferdinand Tiemann died in Merano in 1899 after a heart attack at the age of 51. He was buried in the New Cemetery in Wannsee . The grave has not been preserved.

Honors

Tiemann was a member of the German Academy of Sciences Leopoldina. In 1876, the Leopoldina Halle awarded him the Cothenius Medal for his services .

Works

  • Tiemann: Gärtner ’s handbook for the investigation and assessment of water: for use by pharmacists, doctors, chemists, manufacturers, medicinal officials and technicians; with 40 wood engravings a. 10 panels . Vieweg, Braunschweig 4th Edition 1895. urn : nbn: de: hbz: 061: 2-13576

Individual evidence

  1. ^ Tiemann, F. & Haarmann, W. (1874): About coniferin and its transformation into the aromatic principle of vanilla. In: Reports of the German Chemical Society. 7 , pp. 608-623 (1874). doi : 10.1002 / cber.187400701193 . Digitized on Gallica .
  2. ↑ Chem. Zentralbl. 5 , 652 (1874) . - CR Acad. Sci. 79 , 635 (1874)
  3. ^ Otto Nikolaus Witt : Ferdinand Tiemann. A picture of life . In: Ber. d. German chem. Ges. 34, 1901. pp. 4430-4455. doi : 10.1002 / cber.190103403176 .
  4. ↑ Allgemeine Zeitung , supplement, November 17, 1899.
  5. ^ Hans-Jürgen Mende: Lexicon of Berlin tombs . Haude & Spener, Berlin 2006. p. 265.

Remarks

Web links

personal data
SURNAME Tiemann, Ferdinand
ALTERNATIVE NAMES Tiemann, Johann Karl Wilhelm Ferdinand
BRIEF DESCRIPTION German chemist
DATE OF BIRTH June 10, 1848
PLACE OF BIRTH Rübeland
DATE OF DEATH November 14, 1899
Place of death Meran