Results 21 to 30 of about 2,914 (164)
Zanco Journal of Pure and Applied Sciences, 2023 The Biginelli Reaction is a one-pot acid catalyzed cyclocondensation of -keto ester, urea and aromatic aldehyde which leads to the synthesis of functionalized 3,4-dihydro-2(H)-pyrimidinones (DHPMs).
Rostam R. Braiem
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An unusual condensation of pyrimidinones: synthesis of bipyrimidinones and bipyrimidinylmethane
, 1991 An unusual condensation of pyrimidinones I, and II (R=CHO, H) in the presence of lithiated furan derivs. or LiHMDS leads to the formation of III, IV and V.
R. NICOLETTI +3 more
core +2 more sources
RECENT ADVANCES IN METAL-CATALYZED C-H FUNCTIONALIZATION OF PYRIMIDINONES, QUINAZOLINONES AND FUSED QUINAZOLINONES [PDF]
, 2018 International audienceThis review emphasises the recent developments in metal-catalyzed functionalization using direct C-H bond activation of pyrimidinones (uracils), quinazolinones and quinazolinone-based fused poly-N-heterocycles as well as metal ...
Fruit, Corinne, Besson, Thierry
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A simple and efficient one-pot synthesis of novel benzimidazo[1,2-a]- chromeno[4,3-d] pyrimidinones catalyzed by [Et3NH][HSO4] [PDF]
, 2020 1418-1424A simple and efficient one-pot synthesis of novel polyheterocyclic benzimidazo[1,2-a]- chromeno[4,3-d]pyrimidinones 4 via a three-component condensation of 2-aminobenzimidazole 1, aromatic aldehydes 2 and 4-hydroxy coumarin 3 catalyzed by ...
Brahmeshwari, G, Prasoona, G, Kishore, B
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Molecules, 2021 In this article, we showed the synthesis of new polycyclic aromatic compounds, such as thienotriazolopyrimidinones, N-(thienotriazolopyrimidine) acetamide, 2-mercapto-thienotriazolo-pyrimidinones, 2-(((thieno-triazolopyrimidine) methyl) thio) thieno ...
Ameen Ali Abu-Hashem +2 more
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Molecules, 2012 A series of pyridines, pyrimidinones, oxazinones and their derivatives were synthesized as antimicrobial agents using citrazinic acid (2,6-dihydroxyisonicotinic acid) as a starting material.
Abd El-Galil E. Amr +3 more
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Synthesis of pyrazolopyrimidinones using a “one-pot” approach under microwave irradiation
Beilstein Journal of Organic Chemistry, 2018 A simple one-pot method for the microwave-assisted synthesis of substituted pyrazolo[1,5-a]pyrimidinones, a core scaffold in many bioactive and pharmaceutically relevant compounds, has been established.
Mark Kelada +4 more
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Molecules, 2011 all-endo-3-amino-5-hydroxybicyclo[2.2.2]octane-2-carboxylic acid (13) and all-endo-5-amino-6-(hydroxymethyl)bicyclo[2.2.2]octan-2-ol (10) were prepared via dihydro-1,3-oxazine or g-lactone intermediates by the stereoselective functionalization of an N ...
Márta Palkó +2 more
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Angewandte Chemie, EarlyView.The azacitidine biosynthetic gene cluster (aza BGC) was identified by the resistance‐gene‐guided comparative genomics method in Streptomyces mobaraensis IPIO2. The complete biosynthetic pathway of azacitidine, which follows a “base‐first‐then‐glycosylation” logic, was elucidated through in vivo and in vitro experiments.
Dan Wang +6 more
wiley +2 more sources
CHIMIA, 2003 In this short review, new quinazolinones and thieno-pyrimidinones with outstanding powdery mildew activity are introduced. The most important inventions of two major players in this field, DuPont and Syngenta, are presented and interesting ...
Harald Walter, Ronald Zeun
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