Auwers Sattelite Craters Map
Auwers may refer to: * Auwers synthesis chemical synthesis discovered by Karl von Auwers * Auwers (crater), a lunar crater People *Karl von Auwers (1863 - 1939) German chemist *Arthur Auwers Georg Friedrich Julius Arthur von Auwers (12 September 1838 – 24 January 1915) was a German astronomer. Auwers was born in Göttingen to Gottfried Daniel Auwers and Emma Christiane Sophie (née Borkenstein). He attended the University of Gà ...

Auwers Synthesis
The Auwers synthesis is a series of organic reactions forming a flavonol from a coumarone. This reaction was first reported by Karl von Auwers in 1908.K. v. Auwers, E. Auffenberg, "Über Cumaranone und Hydrindone", ''Ber. Dtsch. Chem. Ges.'', 52, 92-113 (1919) (). The first step in this procedure is an acid catalyzed aldol condensation between benzaldehyde and a 3-cyclooxapentanone to an o-hydroxychalcone. Bromination of the alkene group gives a dibromo-adduct which rearranges to the flavonol by reaction with potassium hydroxide. Mechanism A possible mechanism for the rearrangement step is shown below: See also * Algar–Flynn–Oyamada reaction * Allan–Robinson reaction The Allan–Robinson reaction is the chemical reaction of o-hydroxyaryl ketones with aromatic anhydrides to form flavones (or isoflavones). If aliphatic anhydrides are used, coumarins can also be formed. (See Kostanecki acylation.) : Mechanis ... References {{Organic reactions Heterocycle formi ...
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Auwers (crater)
Auwers is a small lunar impact crater located in the Montes Haemus mountain range at the south edge of Mare Serenitatis. It is named after German astronomer Arthur Auwers. It lies southeast of the crater Menelaus. The irregular rim of Auwers has a gap at the north-northwest edge, which allowed lava flows to reach the crater floor and flood the interior. Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Auwers. References * * * * * * * * * * * * External links LTO-60A2 Auwers— L&PI topographic map In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historic ... Impact craters on the Moon {{Craters on the Moon: A–B ...
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Karl Von Auwers
Karl Friedrich von Auwers (September 16, 1863 – May 3, 1939) was a German chemist, and was the academic adviser of both Karl Ziegler and Georg Wittig at the University of Marburg. Life Karl Friedrich von Auwers was born the son of the renowned astronomer Arthur Auwers on in Gotha, Germany. He studied at first at the University of Heidelberg and later with August Wilhelm von Hofmann at the University of Berlin, where he received his Ph.D. in 1885. After one further year with Hofmann he joined the group of Victor Meyer at the University of Göttingen and later at the University of Heidelberg. He stayed at Heidelberg until he became professor at the University of Greifswald in 1900. He was responsible for the construction of a new chemistry department, of which he chaired. He left in 1913 to become chair of the chemistry department of the University of Marburg where he stayed until his retirement in 1928. Karl von Auwers died on May 3, 1939 in Marburg Marburg ( or ) is a un ...
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