| Rainer Ludwig Claisen | |
|---|---|
| Born | January 14, 1851 Cologne |
| Died | January 5, 1930 (aged 78) Godesberg am Rhein |
| Nationality | Germany |
| Fields | chemistry |
| Known for | work with condensations of carbonyls and sigmatropic rearrangements |
Rainer Ludwig Claisen (January 14, 1851 – January 5, 1930) was a famous German chemist best known for his work with condensations of carbonyls and sigmatropic rearrangements. He was born in Cologne as the son of a jurist and studied chemistry at the university of Bonn (1869), where he became a member of K.St.V. Arminia. He served in the army as a nurse in 1870–1871 and continued his studies at Göttingen University. He returned to the University of Bonn in 1872 and started his academic career at the same university in 1874. He died in 1930 in Godesberg am Rhein (near Bonn).
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| 1874 | Promotion at the University of Bonn; position at Kekulé's laboratory |
| 1878 | Habilitation as Privatdozent at the University of Bonn |
| 1882 | Worked with Henry Roscoe and Carl Schorlemmer at Owens College, Manchester (until 1885) |
| 1886 | Worked at the laboratory of von Baeyer (University of Munich) |
| 1887 | Habilitation as Privatdozent at the University of Munich |
| 1890 | Position as Professor ordinarius of organic chemistry at TH Aachen |
| 1897 | Position as Professor ordinarius of chemistry at the University of Kiel |
| 1904 | Honorarprofessor at the University of Berlin, collaboration with Emil Fischer |
| 1907 | Emeritus; starts his own private laboratory in Godesberg am Rhein |