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Organic reaction
The Gewald reaction (or the Gewald aminothiophene synthesis) is an organic reaction involving the condensation of a ketone (or aldehyde when R2 = H) with
Gewald_reaction
Organic chemical reaction
strong base in this reaction would induce self-condensation of the aldehyde or ketone. The Hantzsch pyridine synthesis, the Gewald reaction and the Feist–Benary
Knoevenagel_condensation
Gattermann aldehyde synthesis Gattermann Koch reaction Gattermann reaction Geminal halide hydrolysis Gewald reaction Gibbs phthalic anhydride process Gilman
List_of_organic_reactions
Type of reaction in organic chemistry
condensation Diels–Alder reaction Feist–Benary synthesis Fiesselmann thiophene synthesis Fischer indole synthesis Gewald reaction Hantzsch pyridine synthesis
Ring_forming_reaction
Organic compound
active ingredient later marketed as olanzapine. In the first step, a Gewald reaction using propionaldehyde, sulfur and malononitrile formed the thiophene
5-Methyl-2-((2-nitrophenyl)amino)-3-thiophenecarbonitrile
5-Methyl-2-((2-nitrophenyl)amino)-3-thiophenecarbonitrile
Organic compound with formula CH2(CN)2
malononitrile is very useful in several reactions, the prime example being a suitable starting reagent for the Gewald reaction, where the nitrile condenses with
Malononitrile
Examples of three component reactions: Alkyne trimerisation Biginelli reaction Bucherer–Bergs reaction Gewald reaction Grieco three-component coupling
Multi-component_reaction
Sulfur-containing aromatic compound
similarly using Lawesson's reagent as the sulfidizing agent, or via the Gewald reaction, which involves the condensation of two esters in the presence of elemental
Thiophene
Austrian chemist and professor
University of Halle-Wittenberg, and Karl Gewald, who is best known for the development of the Gewald reaction and his work in the field of thiophenes and
Friedrich_Asinger
Chemical compound
authors list (link). Gewald, K.; Spies, H.; Mayer, R. (1970). "Zur Reaktion von Enaminen mit Schwefel und Cyanamid" [On the Reaction of Enamines with Sulfur
Cyanamide
Wars in South West Africa, 1904–1908
Bridgman 1981, p. 71. Bridgman 1981, pp. 71–72. Bridgman 1981, p. 72. Gewald, Jan-Bart, Herero Heroes: A Socio-political History of the Herero of Namibia
Herero_uprising
Z.; Mack, James (8 April 2014). "A Solvent-Free, One-Step, One-Pot Gewald Reaction for Alkyl-aryl Ketones via Mechanochemistry". Applied Sciences. 4 (2):
Maxwell_Zeb_Shumba
Laboratory apparatus used to condense vapors
Egon Fanghänel, Jürgen Faust, Mechthild Fischer, Frithjof Gentz, Karl Gewald, Reiner Gluch, Roland Mayer, Klaus Müller, Dietrich Pavel, Hermann Schmidt
Condenser_(laboratory)
Günter Domschke, Egon Fanghänel, Mechthild Fischer, Frithjof Gentz, Karl Gewald, Reiner Gluch, Wolf D. Habicher, Hans-Joachim Knölker, Roland Mayer, Peter
N-Nitrosamides
Bantustan in South West Africa (1968–1989)
ISSN 0029-666X. Jan-Bart Gewald, ‘Who Killed Clemens Kapuuo?’, Journal of Southern African Studies, 30. 3 (2004), 559-576 (p.563) Gewald, Jan-Bart (September
Hereroland
Chemical compound
was recently reported: A scalable process was also developed recently: A Gewald aminothiophene synthesis between 4-nitrophenylacetone [5332-96-7] (1) and
Relugolix
1904–1908 genocide by the German Empire
advance, perhaps at a 1903 tribal meeting. However, historian Jan-Bart Gewald has instead argued that it was provoked by Ralph Zürn, a German officer
Herero_and_Nama_genocide
Dutch historian, researcher and author
deeply researched and intellectually significant and Professor Dr. Jan-Bart Gewald, former director of the African Studies Centre Leiden stated that what Harvard
Anne-Lot_Hoek
List of works on the history of Zambia
African Studies, 16(4), 603–621. Gewald, J. B. (2008). Researching post-colonial Zambia: Prospects and problems. In J.-B. Gewald, M. Hinfelaar, & G. Macola
Bibliography of the history of Zambia
Bibliography_of_the_history_of_Zambia
Administrator of South West Africa (now Namibia)
South West Africa. Penguin. Gewald, Jan-Bart (2007). "Chapter 4: Chief Hosea Kutako". In de Bruijn, Mirjam; van Dijk, Rijk; Gewald, Jan-Bart (eds.). Strength
Gys_Hofmeyr
ISSN 1381-1312. Gewald, J. B. (2000). "Colonization, Genocide and Resurgence: The Herero of Namibia, 1890–1933". In Bollig, M.; Gewald, J. B. (eds.). People
List_of_war_crimes
History of efforts to improve human genetic quality
id=28&tx_ttnews%5Btt_news%5D=54620&no_cache=1, captured on August 20, 2011 Gewald, Jan-Bart, "Herereo Heroes: A Socio-Political History of the Herero of Namibia
History_of_eugenics
Turkish psychiatrist (born 1932)
Von Innen Betrachet. (Eds.), Anne-Marie Schlosser, und Alf Gerlach. In: Gewald und Zivilisation, 183–212. Giessen: Psychosozial-Verlag. (2002). Volkan
Vamık_Volkan
travel, tourism, insurance
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