Nikolai Jakowlewitsch Demyanow

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Nikolai Jakowlewitsch Demjanow ( Russian: Николай Яковлевич Демьянов ; born March 27, 1861 in Tver ; † March 19, 1938 in Moscow ) was a Russian chemist ( organic chemistry ).

Life

Demjanow went to high school in Moscow, studied chemistry at Lomonossow University , received his doctorate in 1886 ( About Dextrin ) and was then from 1886 assistant to Gawril Gawrilowitsch Gustawson (1843-1908) at the Agriculture and Forestry Academy (Petrowskaya Academy) in Moscow , at which he became assistant professor in 1893 and professor in 1898. His habilitation took place in 1899 (Russian doctorate). From 1935 he was at the Institute for Organic Chemistry of the Academy of Sciences.

Demjanow founded a Russian school of organic chemistry with close ties to agriculture and biology.

He dealt with the reaction of nitrogen oxides with unsaturated hydrocarbons and with alicyclic compounds and synthesized methycyclopropane in 1894 and vinylcyclopropane in 1895.

The Demjanov rearrangement , which is often associated with a ring expansion or reduction, is named after him, and he was also familiar with the Tiffeneau ring expansion (also Tiffeneau-Demjanow rearrangement) before Marc Tiffeneau (1873-1945 ). Demyanov converted a cyclobutylmethylamine (a ring with four carbon atoms) with nitrous acid by removing the amino group into a mixture of alcohols, including cyclopentanol, which resulted in ring expansion with five carbon atoms. Later he also found the other way around that one can achieve a ring narrowing with the same rearrangement. He found the process in 1903. Tiffeneau converted amino alcohols into ketones in a similar way with ring expansion, but did not publish it until 1937.

In 1888 he and Gustawson developed a method for representing propadiums . During the First World War, he was involved in the manufacture of medicines such as novocaine. From the 1920s he dealt with plant substances such as essential oils.

Fonts

  • Agronomic chemistry. Nitrogen heterocycles and alkaloids, 1923 (Russian, lectures)
  • Organic Chemistry, Moscow 1922 to 1925 (Russian)
  • with Feofilaktov: Chemistry of Plant Compounds, 1933 (Russian)
  • with ND Prjanischnikow: General Methods for the Analysis of Plant Substances, 1934 (Russian)
  • with Nilov, Williams: Essential Oils, Their Structure and Analysis, 1933
  • Selected Works, 1936 (Russian)

literature

Individual evidence

  1. ^ Li, Named Reactions, Springer, 2009, p. 177

Web links


personal data
SURNAME Demyanov, Nikolai Jakowlewitsch
ALTERNATIVE NAMES Демьянов, Николай Яковлевич (Russian)
BRIEF DESCRIPTION Russian chemist
DATE OF BIRTH March 27, 1861
PLACE OF BIRTH Tver
DATE OF DEATH March 19, 1938
Place of death Moscow