Ferdinand Tiemann

Infobox_Scientist
name = Johann Karl Wilhelm Ferdinand Tiemann


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caption = Ferdinand Tiemann
birth_date = birth date|1848|6|10
birth_place = Rübeland part of Elbingerode, Germany
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nationality =
death_date = death date and age|1899|11|14|1848|6|10
death_place = Meran (Merano), Austria (now Italy)
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work_institution = University of Berlin
alma_mater = Technical University at Brunswick
doctoral_advisor = August Wilhelm von Hofmann
doctoral_students = Julius Stieglitz,
Carl Harries
known_for = Reimer-Tiemann reaction,
Tiemann rearrangement
prizes =
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Johann Karl Wilhelm Ferdinand Tiemann was a German chemist and together with Reimer discoverer of the Reimer-Tiemann reaction.

Beginning in 1866, Tiemann studied pharmacy at the Technical University at Brunswick where he graduated in 1869. His professor in Brunswick wrote a letter of recommendation to August Wilhelm von Hofmann at the University of Berlin where Tiemann started as assisatant of von Hofmann in 1869. In 1874 Wilhelm Haarmann and Tiemann started a company, after they discovered the synthesis of vanillin from coniferyl alcohol. The vanillin plant Holzminden was not very successful before Karl Ludwig Reimer discovered the Reimer-Tiemann reaction which opened an alternative synthesis route to vanillin. In 1882 Tiemann became professor at the University of Berlin.

He was involved in the first synthesis of Jonon a compound of the sweet violet (Viola odorata), which became a huge success for Harmann & Reimer company.

August Wilhelm von Hofmann married Berta the younger sister of Ferdinand Tiemenn.