Johann Carl Ferdinand Tiemann ( German: Johann Carl Ferdinand Tiemann ; 1848–1889) is a German organic chemist .
| Johann Karl Ferdinand Timan | |
|---|---|
| Johann Carl Ferdinand Tiemann | |
 | |
| Birth name | Johann Karl Ferdinand Timan |
| Date of Birth | June 10, 1848 |
| Place of Birth | , Duchy of Braunschweig |
| Date of death | November 14, 1889 ( 41) |
| A place of death | Meran , Tyrol , Austria-Hungary |
| A country |  Duchy of Braunschweig →  German Empire |
| Scientific field | chemistry |
| Place of work | University of Berlin |
| Alma mater | Braunschweig University , University of Berlin |
| Academic degree | Ph.D |
| Academic rank | Professor |
| supervisor | |
| Known as | organic chemist |
| Awards and prizes | Cotenius Medal ( 1876 ) |
Content
- 1 Biography
- 2 Scientific activities
- 3 Honors and Awards
- 4 notes
- 5 Links
Biography
Born on June 10, 1848 in Ruebeland (Duchy of Braunschweig , now - Saxony-Anhalt , Germany ).
In 1866 he entered the University of Braunschweig , where he studied chemistry and pharmacy . Since 1869, he studied at the University of Berlin with August Wilhelm Hoffmann . In 1871, after graduation, he received a Ph.D. After that he worked there - at the University of Berlin. In 1882 he was awarded the title of professor .
He died on November 14, 1889 in Meran [1] , Tyrol , Austria-Hungary (now the territory of Italy ).
Scientific activity
The main scientific works of Timan are devoted to the chemistry of terpenes . He revealed a genetic link between vanillin and coniferin . This was confirmed in 1874 when he, together with obtained vanillin by oxidizing coniferin and coniferyl alcohol with chromic acid . Together with Timan also studied the reaction of producing aromatic o- oxaldehydes by introducing a formyl group into phenols while heating them with chloroform in the presence of alkali (Reimer – Timan reaction); using this reaction in 1876, they were able to synthesize vanillin from guaiacol . And in 1884, Timan used alkyl cyanides and nitrides to produce amidoximes .
Honors and Awards
- Member of the Academy of Naturalists ( Leopoldina ).
- Cotenius Medal Laureate (1876).
- The mineral Timanite is named after Timan.
Notes
- ↑ TIMAN Johann Karl Ferdinand . Personality dossier
Links
- Timan (Tiemann) Johann Karl Ferdinand . Department of Physical Chemistry, RSU.
- Timan Johann Karl Ferdinand (10.VI.1848-14.XI.1889) . Studbooks.net.
- Volkov V.A. , Konskiy E.V. , Kuznetsova G.I. Outstanding chemists of the world. - M .: VSH, 1991.656 s.