Ferdinand Tiemann (1866–1899) was a German chemist and discoverer of the Reimer-Tiemann reaction
In 1874 Wilhelm Haarmann and Tiemann started a company, after they discovered the synthesis of vanillin from coniferyl alcohol.
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Johann Karl Wilhelm Ferdinand Tiemann (June 10, 1848 – November 14, 1899) was a German chemist and together with Reimer discoverer of the Reimer-Tiemann reaction.
After returning to the U.S., Tiemann served three terms as mayor of Wausa, Nebraska.