- Wallach , Otto
- (1847–1931) German chemistBorn at Königsberg (now Kaliningrad in Russia), Wallach studied at Berlin and at Göttingen, where he obtained his PhD in 1869. After a period in industry in Berlin he moved to Bonn (1870), becoming August Kekulé's assistant and later (1876) professor of chemistry. He remained at Bonn until 1889, when he moved to a similar chair at Göttingen.When Wallach began to give regular classes in pharmacy he became interested in essential oils – oils removed from plants by steam distillation with wide uses in medicine and the perfume industry – and started research into determining their molecular structure. This study led to what was to become his major field of research, the chemistry of the terpenes.These had hitherto presented considerable difficulties to the analytic chemist. Wallach succeeded in determining the structure of several terpenes, including limonene, in 1894. His greatest achievement, however, was his formulation of the isoprene rule in 1887. Isoprene, with the formula C5H8, had been isolated from rubber in the 1860s by C. Williams. Wallach showed that terpenes were derived from isoprene and therefore had the general formula (C5H8)n; limonene is thus C10H16. Terpenes were of importance not only in the perfume industry but also as a source of camphors. It was also later established that vitamins A and D are related to the terpenes.Wallach published 126 papers on the terpenes – work for which he was awarded the Nobel Prize for chemistry in 1910.
Scientists. Academic. 2011.
Look at other dictionaries:
WALLACH, OTTO — (1847–1931), German organic chemist and Nobel Prize winner. Wallach was born in Koenigsberg and worked in Bonn from 1870. He was appointed professor in Berlin (1876) and head of the department of pharmacy (1879–89). From 1889 until he retired in… … Encyclopedia of Judaism
Wallach, Otto — ▪ German chemist born March 27, 1847, Königsberg, Prussia [now Kaliningrad, Russia] died Feb. 26, 1931, Göttingen, Ger. German chemist awarded the 1910 Nobel Prize for Chemistry for analyzing fragrant essential oils and identifying the compounds … Universalium
Wallach, Otto — (1847–1931) German organic chemist and Nobel laureate, 1910. Wallach, a professor at Berlin and later at Göttingen, was awarded the Nobel Prize for his twenty five years of research into the molecular structure of a group of substances known… … Who’s Who in Jewish History after the period of the Old Testament
Wallach, Otto — (1847 1931) German chemist. He was professor at Berlin and later at Gottingen. He received the Nobel Prize for research into the molecular structure of a group of substances known as terpenes … Dictionary of Jewish Biography
Wallach, Otto — ► (1847 1931) Químico alemán. Fue premio Nobel de Química en 1910, por sus estudios sobre los terpenos y sus derivados oxigenados … Enciclopedia Universal
Wallach — Wallach, Otto … Enciclopedia Universal
Otto Wallach — (* 27. März 1847 in Königsberg; † 26. Februar 1931 in Göttingen) war ein deutscher Chemiker. Wallach war organischer Chemiker und hat mehrere Reaktionen zum Aufbau heterocyklischer Verbindungen, Farbstoffe entdeckt. Wallach hat in der… … Deutsch Wikipedia
Otto Wallach — Born 27 March 1847 Königsberg, Prussia … Wikipedia
Wallach — Wallach: Eli Wallach Jochanan Wallach Otto Wallach Yona Wallach Esta página de desambiguación cataloga artículos relacionados con el mismo título. Si llegaste aquí a través de … Wikipedia Español
Otto Wallach — Pour les articles homonymes, voir Wallach. Otto Wallach Otto Wallach (27 mars 1847 à Königsberg, Allemagne … Wikipédia en Français