Tadeusz Urbański

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Tadeusz Urbański (born October 26, 1901 in Jekaterinodar , † 1985 ) was a Polish chemist and worked as a professor at the Warsaw University of Technology (Politechnika Warszawska).

Life

In 1919 he matriculated to study chemistry in Novocherkassk . In 1922 he went to Warsaw where he continued his studies at the Technical University and finished in 1924. He also received his doctorate and habilitation at this university in Warsaw . In 1938/39 he was dean of the Faculty of Chemistry. After the outbreak of World War II , Urbański went to France and then to Great Britain. After he returned in 1946 he taught again at the Technical University and was there until 1971 head of the Chair for Organic Technology II ( Technologa Organiczna II ). At the same time he was Dean of the Faculty of Chemistry at today's Warsaw University of Technology (Politechnika Warszawska) until 1950 . In 1960 he became a member of the German Academy of Sciences Leopoldina .

plant

His scientific work on the chemistry of nitroalkanes and its simplest representative, nitromethane , is best known . So he condensed z. B. Nitroethane with two equivalents of formaldehyde in the presence of sodium hydrogen carbonate to a nitro-substituted glycol . The band at 270 nm typical for nitro groups is missing in its absorption spectrum, which suggests the formation of hydrogen bonds with the participation of the nitro group . Under the action of alkali, retro- aldol condensation takes place with elimination of formaldehyde. The reaction of the nitro- substituted glycol with formaldehyde and cyclohexylamine yields substituted 1,3- oxazines in a three-component reaction . By varying the nitroalkane and amine components, numerous different 1,3-oxazines can be synthesized.

literature

Individual evidence

  1. ↑ a b c d Technologia Chemiczna ( Memento of October 6, 2012 in the Internet Archive ). Politechnika Warszawska, accessed October 10, 2010 (Polish).
  2. ^ A b Louis Fieser, Mary Fieser: Organische Chemie , Verlag Chemie Weinheim, 2nd edition, 1972, ISBN 3-527-25075-1 , pp. 555-556.
  3. ↑ Member entry of Tadeusz Urbanski at the German Academy of Natural Scientists Leopoldina , accessed on June 18, 2016.
personal data
SURNAME Urbański, Tadeusz
ALTERNATIVE NAMES Urbanski, Tadeusz
BRIEF DESCRIPTION Polish chemist
DATE OF BIRTH 1901
PLACE OF BIRTH Ekaterinodar
DATE OF DEATH 1985