Otto Wallach

Otto Wallach
Otto Wallach
Person information
The birth	1847March 27 Kingdom of Prussia Konigsberg
Death	1931February 26(1931-02-26) (83 years old) Gottingen, Germany
Nationality	Germany
Alma mater	Gottingen University
Study
Research field	Organic chemistry
Research organization	Gottingen University Bonn University
Doctoral course Instructor	August Wilhelm phone Hoffman Friedrich Bela August Kekule
Doctoral course Advisee	Walter Haas
Main achievements	Study of terpene
Main receiving a prize career	Nobel Prize in Chemistry (1910)
A project: Person biography
I display a template

Nobel Prize winner The receiving a prize year: 1910 A receiving a prize section: Nobel Prize in Chemistry A receiving a prize reason: Pioneer study of the alicyclic compound

Otto Wallach (Otto Wallach, March 27, 1847 – ) is a German chemist on February 26, 1931. In 1910, Nobel Prize in Chemistry is won by the achievement of the pioneer study of the alicyclic compound.

Table of contents

Life

In Konigsberg (existing Kaliningrad), I was born in the house of the government official of the Kingdom of Prussia. When シュテッティン is to Potsdam more afterwards, father is transferred. I go to the gymnasium in Potsdam and learn literature and history of art. Wallach assumed these two the hobby of the life. In these days, I begin a personal chemical experiment at home.

I have begun to learn chemistry from 1867 in Gottingen University. It is Friedrich Bela in those days to have commanded the organic chemistry section of university studies. I learned under August Wilhelm phone Hoffman of the Berlin University only for the first semester, and a doctorate was conferred in 1869 by the Gottingen University. I move to the university boom from 1870 and become the professor (1870-89) of the pharmacy and study under Friedrich Kekule. I acted as a professor (1889-1915) of the Gottingen University afterwards. I die in Gottingen.

Main achievements

I won Nobel Prize in Chemistry by the achievement of the pioneer study of the alicyclic compound in 1910.

I started systematic analysis of terpene included in the essential oil with Friedrich Kekule boom at a university. An isolation extremely had little successful terpene and did not understand the structure well at that time, too. There was already technique to identify the identity of the material as the measurement of the melting point of the mixture by a comparison. It was necessary to usually change liquid terpene to the crystalline compound to apply the technique. I derived it progressively (in adding something to the double bond that some terpene has in particular) and finally got a crystalline compound. Because there was known terpene by transposition of unknown terpene by having discovered terpene which became the unsaturation by rearrangement reaction periodically, I grasped structure. I discover Leuckart Wallach reaction in Wallach transposition, 1887 in 1880. He opened up the course to a systematic study of terpene in this way.

(+) -With α-pinene (-) -α-pinene

Wallach named terpene and pinene it and performed the first systematic study about pinene. He proposed an opinion that terpene was an oligomer of the isoprene again. This came to be called isoprene rule later and helped structure elucidation of various terpene.

Wallach wrote chemical book "Terpene und Campher" (1909) about terpene.

Wallach is known for "a law of Wallach" to become higher in density than the chiral body which a racemic body is equivalent to [¹]. This law is demonstrated by the analysis of the crystal database [²].

Footnote, source

1. ^ Wallach, O. (1895). Liebigs Ann. Chem. 286, 90-143.
2. ^ Carolyn Pratt Brock, W. Bernd Schweizer, and Jack D. Dunitz (1991). "On the validity of Wallach's rule: on the density and stability of racemic crystals compared with their chiral counterparts". J. Am. Chem. Soc. 113 (26): 9811. doi: 10.1021/ja00026a015. http://pubs.acs.org/doi/abs/10.1021/ja00026a015. 

References

• Leopold Ruzicka (1932). "Third Pedler lecture. The life and work of Otto Wallach." J. Chem. Soc.: 1582. doi: 10.1039/JR9320001582. 

Allied item

• Terpenoid

Outside link

• From the library catalogue (German) of documents - Germany national library which assumes writing of Otto Wallach and Otto Wallach the subject.
• Nobel Lecture Alicyclic Compounds from Nobelprize.org website
• Biography Biography from Nobelprize.org website
• Otto Wallach at the NNDB website.

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