Hans von Pechmann
Hans von Pechmann | |
|---|---|
 | |
| Born | 1 April 1850 |
| Died | 19 April 1902 (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 |
Hans 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 (e.g., diacetyl), acetonedicarboxylic acid, methylglyoxal and ; established the symmetrical structure of anthraquinone.
Von Pechmann also produced the first example of solid polyethylene serendipitously in 1898, via the decomposition of diazomethane.
He was born in Nürnberg. 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 until his death. He killed himself by taking cyanide, aged 52.[6]
Works[]
- Volhard's Anleitung zur Qualitativen chemischen Analyse . Chemisches Labolatorium des Staates, München 9th & 10th ed. 1901 Digital edition by the University and State Library Düsseldorf
- Anleitung zur quantitativen Analyse nach Cl. Zimmermann : zum Gebrauche im chemischen Laboratorium des Staates zu München . Chemisches Laboratorium des Staates, München 10th ed. 1901 Digital edition by the University and State Library Düsseldorf
See also[]
- German inventors and discoverers
References[]
- ^ H. von Pechmann (1894). "Ueber Diazomethan". Berichte der deutschen chemischen Gesellschaft. 27 (2): 1888–1891. doi:10.1002/cber.189402702141.
- ^ H. von Pechmann (1895). "Ueber Diazomethan". Berichte der deutschen chemischen Gesellschaft. 28 (1): 855–861. doi:10.1002/cber.189502801189.
- ^ H. von Pechmann, Carl Duisberg (1883). "Ueber die Verbindungen der Phenole mit Acetessigäther". Berichte der deutschen chemischen Gesellschaft. 16 (1): 2119–2128. doi:10.1002/cber.188301602117.
- ^ H. von Pechmann (1884). "Neue Bildungsweise der Cumarine. Synthese des Daphnetins". Berichte der deutschen chemischen Gesellschaft. 17 (1): 929–936. doi:10.1002/cber.188401701248.
- ^ H. von Pechmann (1898). "Pyrazol aus Acetylen und Diazomethan". Berichte der deutschen chemischen Gesellschaft. 31 (3): 2950–2951. doi:10.1002/cber.18980310363.
- ^ Koenigs, Wilhelm (1903). "Hans von Pechmann". Berichte der Deutschen Chemischen Gesellschaft. 36 (4): 4417–4511. doi:10.1002/cber.190303604134.
- Partington, J. R. A History of Chemistry. Macmillan: 1964; vol. 4, p. 838-839.
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- 1850 births
- 19th-century German chemists
- University of Greifswald alumni
- German chemists
- Suicides by poison
- Suicides in Germany
- 1902 suicides
- German chemist stubs