Wilhelm Pfitzinger

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Friedrich Wilhelm August Pfitzinger (born March 12, 1864 in Schöningen , Duchy of Braunschweig , † March 21, 1939 in Berlin-Lichterfelde ) was a German chemist . In 1886 he discovered the Pfitzinger reaction named after him .

Life

The Evangelical Lutheran Pfitzinger visited Biirgerschulen to Sudenburg at Magdeburg and Schönebeck on the Elbe . He then went to high schools in Charlottenburg , Dresden ( Kreuzschule ) and Elberfeld (today's Wilhelm-Dörpfeld-Gymnasium ), which he left at Easter 1882 with the school leaving certificate .

Wilhelm Pfitzinger then studied natural sciences , especially chemistry, first at the Philipps University in Marburg and later at the University of Leipzig . During his studies in 1882 he became a member of the Alemannia Marburg fraternity . He heard lectures by Messrs Julius Bergmann , Friedrich Fittica , Franz Melde , Bernhard Rathke and Theodor Zincke in Marburg and those of Messrs Ernst Carstanjen , Hermann Credner , Wilhelm Gottlieb Hankel , Hermann Kolbe , Kurt Heinrich Meyer , Adolf von Strümpell and Anton Weddige in Leipzig , Eilhard Wiedemann and Ferdinand Zirkel . He practically worked in the laboratories of Johannes Wislicenus and Ernst von Meyer in Leipzig.

In 1885 Pfitzinger began his dissertation with von Meyer "On condensations of isatinic acid to cinchoninic acid derivatives" , but he was unable to complete his doctoral thesis due to his six years of scientific work at Duisberg in Elberfeld. Pfitzinger was only able to resume his work in Leipzig in the summer of 1892 and complete it in 1896.

Around 1900 he carried out his research activities in Berlin at the II. Chemical Institute ("Technological Institute") of the Friedrich-Wilhelms-Universität in Bunsenstrasse. 1 continued. At the end of 1903 he was appointed imperial councilor and member of the imperial patent office , later the imperial patent office in Berlin. In the end he also took over the representation of the Reich Minister of Justice Josef Frenken , to whom the Reich Patent Office was subordinate.

Works (selection)

literature

  • Wilhelm Pfitzinger: About condensations of isatic acid to cinchoninic acid derivatives . Verlag Heinrich Schmidt & Carl Günther, Leipzig 1896, OCLC 314552232 , Vita, p. 52 .

Individual evidence

  1. ↑ Death register of the Lichterfelde registry office No. 366/1939.
  2. ↑ Willy Nolte (Ed.): Burschenschafter Stammrolle. List of the members of the German Burschenschaft according to the status of the summer semester 1934. Berlin 1934. p. 372.
  3. ^ W. Pfitzinger and C. Duisberg: About the constitution of β-naphthol-α-monosulfonic acid and β-naphthol-α-disulfonic acid . In: Reports of the German Chemical Society 22 , 396-399 (1889). Digitized on Gallica
  4. ↑ W. Pfitzinger: About condensations of isatic acid to cinchoninic acid derivatives . In: Journal für Praktische Chemie 56 , 283-320 (1897). Digitized on Gallica
  5. ↑ W. Pfitzinger: About condensations of isatic acid to cinchonic acid and its derivatives . In: Journal für Praktische Chemie 66 , 263-264 (1902) digitized on Gallica
  6. ↑ Personalnachrichten in Angewandte Chemie 16 , p. 1191 (1903).
  7. ↑ 38th Annual General Meeting of the Association of German Chemists. Nuremberg, from 1. – 6. September 1925. In: Zeitschrift für Angewandte Chemie. 38, 1925, p. 789, doi : 10.1002 / anie.19250383702 .
personal data
SURNAME Pfitzinger, Wilhelm
ALTERNATIVE NAMES Pfitzinger, Friedrich Wilhelm August (full name)
BRIEF DESCRIPTION German chemist
DATE OF BIRTH March 12, 1864
PLACE OF BIRTH Schöningen
DATE OF DEATH March 21, 1939
Place of death Berlin-Lichterfelde