Louis Benda
Louis Benda (born January 30, 1873 in Fürth ; died July 22, 1945 in Zurich ) was a German - Swiss doctor and chemist .
Life
Louis Benda comes from a Jewish family who lived in Fürth for several generations. He was born as the third child of Wilhelm Ludwig Benda and his wife Dina Benda (née Büchenbacher). Benda's father was the owner of a bronze factory and a partner in a textile wholesale business, which he sold in 1885 to move with his family to Zurich. Lous Benda first attended the Realgymnasium in Nuremberg , after moving to Zurich he passed his school leaving examination at the Gymnasium there, which he attended with his three siblings. In 1887 he took on Swiss citizenship. At the age of 18 he began studying chemistry at the Swiss Federal Polytechnic, today's ETH Zurich . In 1891 he made his diploma exam. At the age of 22 he accepted an assistant position with Robert Gnehm , where he worked on his dissertation on the subject of tartrazine . He researched the constitution of the yellow dye and found some new reactions. In 1897 he was awarded a Dr. phil. PhD .
After completing his studies, he worked in a large chemical company in Lyon for two years. In 1899 he settled in Frankfurt am Main and became an employee of Cassella Farbwerke Mainkur on May 15, 1899, where he worked for Arthur von Weinberg on acridine , triphenylmethane and sulfur dyes . Benda had a lifelong friendship with von Weinberg. From 1906 Benda worked for the later Nobel Prize winner Paul Ehrlich and in the Georg-Speyer-Haus . Benda worked on organic arsenic compounds for several years and was involved in the development of Salvarsan , the first drug against syphilis . In 1919 he received power of attorney at Cassella Farbwerke and in 1925 became deputy director. In the newly founded IG Farben , he worked in the pharmaceutical department in Hoechst and was part of the board of directors. From 1931 he was honorary professor at the University of Frankfurt and the motto of Paul Ehrlich we must learn to aim chemically was the topic of his inaugural lecture. In 1933 his license to teach was revoked. After Ludwig Hermann took over the management of Hoechst at the end of 1932, Benda was given early retirement there against his will shortly after his 60th birthday. In 1939 he emigrated to Switzerland.
At the age of 40, Benda married the concert singer Alice Lenné. The couple had two daughters together, Irene and Anneliese.
Works
- Contributions to the knowledge of tartrazines . Zurich 1897 (dissertation).
- P. Ehrlich and L. Benda: On the action of potassium cyan on pyronine and acridinium dyes. In: Reports of the German Chemical Society. Volume 46, 1913, pp. 1931–1951 (PDF; 1.1 MB).
literature
- Renate Heuer , Siegbert Wolf (ed.): The Jews of the Frankfurt University . Campus Verlag, Frankfurt am Main 1997, ISBN 3-593-35502-7 , p. 31 f .
Individual evidence
- ^ A b c Heinrich Ritter: Louis Benda 1873-1945 . In: Chemical Reports . tape 90 , no. 1 , January 1957, p. I – III , doi : 10.1002 / cber.19570900132 (with picture and catalog raisonné).
- ^ Stephan H. Lindner: Hoechst: an IG Farben plant in the Third Reich . CH Beck, 2005, ISBN 978-3-406-52959-7 , pp. 162-.
| personal data | |
|---|---|
| SURNAME | Benda, Louis |
| BRIEF DESCRIPTION | Swiss physicians and chemists |
| DATE OF BIRTH | January 30, 1873 |
| PLACE OF BIRTH | Fuerth |
| DATE OF DEATH | July 22, 1945 |
| Place of death | Zurich |