Hans von Pechmann
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| Hans von Pechmann | |
| Born | April 1, 1850 |
|---|---|
| Died | April 19, 1902 (aged 52) |
| Residence | Germany |
| Nationality | German |
| Fields | organic chemistry |
| Institutions | University of Munich University of Tübingen |
| Alma mater | University of Greifswald |
| Doctoral advisor | Heinrich Limpricht |
| Doctoral students | William Hobson Mills Julius B. Cohen |
| Known for | Pechmann condensation Diazomethane |
Hans von Pechmann (1850 - 1902) was a German chemist, renowned for his discovery of diazomethane,[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.
Von Pechmann also discovered polyethylene plastics serendipitously, when accidentally heating diazomethane.
After studying with Heinrich Limpricht at the University of Greifswald he became Professor at the University of Munich till 1895. He was professor at the University of Tübingen from 1895 till his death in 1902.
[edit] References
- ^ H. v. Pechmann (1894). "Ueber Diazomethan". Berichte der deutschen chemischen Gesellschaft 27 (2): 1888–1891. doi:.
- ^ H. v. Pechmann (1895). "Ueber Diazomethan". Berichte der deutschen chemischen Gesellschaft 28 (1): 855–861. doi:.
- ^ H. v. Pechmann, Carl Duisberg (1883). "Ueber die Verbindungen der Phenole mit Acetessigäther". Berichte der deutschen chemischen Gesellschaft 16 (1): 2119–2128. doi:.
- ^ H. v. Pechmann (1884). "Neue Bildungsweise der Cumarine. Synthese des Daphnetins". Berichte der deutschen chemischen Gesellschaft 17 (1): 929–936. doi:.
- ^ H. v. Pechmann (1898). "Pyrazol aus Acetylen und Diazomethan". Berichte der deutschen chemischen Gesellschaft 31 (3): 2950–2951. doi:.
- Partington, J. R. A History of Chemistry. Macmillan: 1964; vol. 4, p. 838-839.
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