Date of Birth: 07/10/1902
Place of birth: Kenigskhyutt
A. His training continued at the University of Christian Albrecht (now the University of Kiel), where he worked with Otto Diels, professor of organic chemistry and director of the Chemical Institute of the University. In 1926, having completed a thesis on the reactions to the azodicarboxylic ester, A. was awarded his doctorate and became assistant Diels.
The following year, he and Diels began studying the diene synthesis. Used for the synthesis of a diene, diene hydrocarbons are compounds containing molecule common to all of a four-carbon chain structure wherein two double bonds are separated by a single bond. A Diels and found that at room temperature, the diene hydrocarbons dienophiles attaching molecules ( "diene lovers"), to form new stable six-membered rings. They discovered that this reaction is easily carried out between a number of different dienophiles and dienes which are present in living systems, and as a result can form potentially vast number of different molecules. The principle of diene synthesis, which with A. Diels was first reported in 1928, went on to become the main approach pozvolivshimhimikam investigate the mechanism of many previously studied organic reactions and to lay the foundations of polymer chemistry. The Diels - Alder used in the industrial production of pharmaceuticals, dyes, lubricants, insecticides, synthetic rubbers and plastics.
Over the next eight years and A. Diels continued to work on clarifying the nature of the diene synthesis. In 1930, Alexander was appointed as a lecturer in organic chemistry at the University of Kiel, and in 1934 he became an extraordinary professor, as the high qualification in diene synthesis specialist, the scientist was offered the post of the head is located in Leverkusen, the research department of the concern "I. G. Farben Industry ", which took in 1936 in Leverkusen A. studied the interaction of conjugated butadiene (one kind of diene hydrocarbons) with various dienophiles, such as styrene, which is formed as a result of synthetic rubber, he also analyzed the mechanism of carrying out their reactions .
When he returned in 1940 to the academic activities, A., who is not attracted to the research carried out in wartime Germany, was appointed supervisor of experimental chemistry and chemical engineering at the University of Cologne. At the same time, he became director of the Chemical Institute of the University. Now the Application A. diene synthesis, which would clarify the chemical composition of complex products of natural origin, such as terpenes (isomeric hydrocarbon oils found in conifers), ergosterol (precursor of vitamin D) and vitamin D. Extremely A. capable stereohimika also interested why the formed product or a particular reaction, when the formation of several possible isomers.
In 1949, the one when he was appointed Dean of the Faculty of Philosophy of the University of Cologne, together with A. Diels Nobel Prize in Chemistry "for the discovery and development of the diene synthesis". In his Nobel lecture A. gave an overview of the scientific research that led to his discovery, and described the structural factors that determine the possibility of the formation of a particular configuration. The scientist noted that it is selective steric property of diene synthesis is "one of the decisive factors kotoryeopredelyayut value diene synthesis as a method." "If the basic diene synthesis property was not open, we would never have learned that it can be used to obtain the substance from the mixture and to separate them in a mixture that diene synthesis is a unique means of determining the nature of the specific types of materials."
After receiving the Nobel Prize A. continued his teaching and research in the area of ??further potential applications diene synthesis for industrial purposes. In 1955, he joined the 17 other Nobel laureates, signed a declaration calling on all countries to condemn war as an instrument of foreign policy. The scientist, highly devoted to his work, A. was never married. In 1957, a doctor diagnosed him: exhaustion, advised complete rest. A. died the following year, at the age of 55 years.
In addition to the Nobel Prize, A. was awarded a medal Emil Fischer of the German Chemical Society (1938). He was awarded honorary degrees from the Faculty of Medicine Cologne (1950) and Salamanca (1954) universities. A. was a member of the German Academy of Natural Scientists "Leopoldina".