CHEMIST

Hans von Pechmann

1850 - 1902

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Hans Freiherr von Pechmann (1 April 1850 – 19 April 1902) was a German chemist, renowned for his discovery of diazomethane in 1894. 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 produced the first example of solid polyethylene serendipitously in 1898, via the decomposition of diazomethane. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Hans von Pechmann is the 560th most popular chemist (down from 527th in 2019), the 5,270th most popular biography from Germany (down from 5,041st in 2019) and the 108th most popular German Chemist.

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Among CHEMISTS

Among chemists, Hans von Pechmann ranks 560 out of 602. Before him are Florence B. Seibert, Jürgen Hennig, Peter Jacob Hjelm, Edith M. Flanigen, Carl Jacob Löwig, and Edward Goodrich Acheson. After him are Christian Ehrenfried Weigel, Anna J. Harrison, Wallace Smith Broecker, Barbara Askins, Leslie Orgel, and Krzysztof Matyjaszewski.

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Contemporaries

Among people born in 1850, Hans von Pechmann ranks 115. Before him are Daniel Chester French, Franciszek Rychnowski, John Milne, William H. Welch, Yelena Polenova, and Sibylle Riqueti de Mirabeau. After him are Georg Naue, Ella Wheeler Wilcox, Henry Cabot Lodge, Samuel Gompers, Lawrence Hargrave, and Fanny Hesse. Among people deceased in 1902, Hans von Pechmann ranks 82. Before him are Princess Bathildis of Anhalt-Dessau, Johannes Wislicenus, William McGonagall, Franz Sigel, Mikhail Clodt von Jürgensburg, and Juan Bautista Egusquiza. After him are Walter Reed, John Henry Twachtman, and Wade Hampton III.

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In Germany

Among people born in Germany, Hans von Pechmann ranks 5,273 out of 7,253. Before him are Hans Deppe (1897), Brigitte Zypries (1953), Josef Peters (1914), Hans Reissner (1874), Lars Ricken (1976), and Princess Victoria Margaret of Prussia (1890). After him are Hanns Kilian (1905), Caspar Memering (1953), Elke Erb (1938), Gregor Braun (1955), Burglinde Pollak (1951), and Marius Müller-Westernhagen (1948).

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Among CHEMISTS In Germany

Among chemists born in Germany, Hans von Pechmann ranks 108. Before him are Johannes Wislicenus (1835), Max Bodenstein (1871), Hans Goldschmidt (1861), Karl Friedrich August Rammelsberg (1813), Jürgen Hennig (1951), and Carl Jacob Löwig (1803). After him are Christian Ehrenfried Weigel (1748), Achim Müller (1938), and Mai Thi Nguyen-Kim (1987).

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