Oscar Jacobsen

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Oscar Georg Friedrich Jacobsen (born June 25, 1840 in Ahrensburg , † August 24, 1889 in Rostock ) was a German chemist.

Jacobsen was the son of a pharmacist, completed an apprenticeship as a pharmacist in Heide and Zwickau and studied pharmacy and chemistry at the University of Kiel from 1864, where he passed his state examination as a pharmacist in 1865, received his doctorate in 1868, became a private lecturer in 1869 and qualified as a professor in 1871. In 1871/72 he took part in the Pommerania expedition in the North and Baltic Seas and analyzed the sea water (salts, dissolved gases). In 1873 he became a full professor of chemistry at the University of Rostock . In 1877/78 he was rector there. He died of typhus.

With his sea water analyzes on the Pommerania expedition, he is considered the first German marine chemist .

He dealt with the analysis of hydrocarbons from coal tar during distillation up to 200 degrees Celsius, developed new separation and purification processes and presented many homologues and isomers in coal tar in pure form for the first time.

In 1886 he discovered the Jacobsen migration , the rearrangement of aromatic alkyl and halogen compounds under the action of concentrated sulfuric acid.

He was married to Hermann Karsten's niece Marie .


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Individual evidence

  1. Oscar Jacobsen, a Rostock chemist and his work for marine research, pdf ( Memento of the original dated February 7, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.uni-rostock.de