Übersetzung für 'Gewald' von Englisch nach Deutsch

Gewald reaction

Gewald-Reaktion {f}chem.

• Malononitrile is a suitable starting material for the Gewald reaction, where the nitrile condenses with a ketone or aldehyde in the presence of elemental sulfur and a base to produce a 2-aminothiophene.
• The reaction is named after the German chemist Karl Gewald (born 1930).
• The Hantzsch pyridine synthesis, the Gewald reaction and the Feist–Benary furan synthesis all contain a Knoevenagel reaction step. The reaction also led to the discovery of CS gas.
• Erna Gewald was Erna Dorn's (genuine) married name during her marriage to Max Gewald, between 1945 and their divorce in 1949.
• On 1 April 2021, Marleen Dekker became the new director of the ASC replacing Jan Bart Gewald who had been director since 2017.

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