Hans von Pechmann

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Hans von Pechmann (1850 - 1902 was a German chemist, renowned for his discovery of diazomethane, Pechmann condensation and Pechmann pyrazole synthesis. 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.

[edit] References

  • Partington, J. R. A History of Chemistry. Macmillan: 1964; vol. 4, p. 838-839.


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