Hans von Pechmann
German chemist (1850–1902) / From Wikipedia, the free encyclopedia
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Hans Freiherr[lower-alpha 1] von Pechmann (1 April 1850 – 19 April 1902) was a German chemist, renowned for his discovery of diazomethane in 1894.[1][2] Pechmann condensation[3][4] and Pechmann pyrazole synthesis.[5] He also first prepared 1,2-diketones (e.g., diacetyl), acetonedicarboxylic acid, methylglyoxal and diphenyltriketone; established the symmetrical structure of anthraquinone.
Quick Facts Born, Died ...
Hans von Pechmann | |
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Born | 1 April 1850 |
Died | 19 April 1902(1902-04-19) (aged 52) |
Nationality | German |
Alma mater | University of Greifswald |
Known for | Pechmann condensation Diazomethane |
Scientific career | |
Fields | organic chemistry |
Institutions | University of Munich University of Tübingen |
Doctoral advisor | Heinrich Limpricht |
Doctoral students | William Hobson Mills Julius B. Cohen |
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Von Pechmann also produced the first example of solid polyethylene serendipitously in 1898, via the decomposition of diazomethane.