Heterocyclic Synthesis of Crowded Aposafranones: Structure of 1‐Methyl‐8‐dimethylamino‐10‐phenylphenazin‐2‐(10H)one and Related Compounds
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DOI: 10.1002/open.202300007
Abstract: Abstract Oxidative condensation of three p‐phenylenediamines with 3‐hydroxy‐2‐methyl‐N‐(phenylamino)benzene gives new coloured aposafranones. 2‐Methylresorcinol is easy to convert into the asymmetric building block 3‐hydroxy‐2‐methyl‐N‐(phenylamino)benzene with aniline. The aposafranones are sterically crowded because of the 1‐methyl and… read more here.
Keywords: heterocyclic synthesis; structure methyl; crowded aposafranones; aposafranones structure ... See more keywords
Modern approaches for SO2 insertion in heterocyclic synthesis (microreview)
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DOI: 10.1007/s10593-018-2310-2
Abstract: The most recent advances in the synthesis of heterocyclic compounds via insertion of sulfur dioxide reported from 2015 to 2018 are summarized. Methods described here are organized in several sections depending on the source of… read more here.
Keywords: insertion heterocyclic; insertion; modern approaches; so2 insertion ... See more keywords
New applications of pyridinium ylides toward heterocyclic synthesis
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DOI: 10.1016/j.tet.2020.131415
Abstract: Abstract The recent advances in the syntheses of various heterocycles based on pyridinium ylides are described. Depending on the reactivity of the pyridinium ylides and the reactants, a significant structural diversity of heterocycles can be… read more here.
Keywords: applications pyridinium; toward heterocyclic; new applications; ylides toward ... See more keywords
Molecular iodine: Catalysis in heterocyclic synthesis
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DOI: 10.1080/00397911.2021.1904992
Abstract: Abstract Heterocycles are excellent compounds that play an important role in the production of new drugs, pharmaceutical molecules and natural products. Also, they are widely found in the structure of thousands of drugs, natural products… read more here.
Keywords: iodine catalysis; catalysis heterocyclic; heterocyclic synthesis; synthesis ... See more keywords
Utility of Diketone in Heterocyclic Synthesis: Synthesis of New Substituted Pyrimidines and Fused Pyrimidine of Potential Biosignificant Interest
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DOI: 10.2174/1570179415666180918161101
Abstract: Aim and Objective: In this study, a new series of iminopyrimidine derivatives were synthesized from the reaction of the key intermediate 2-imino-6-phenyl-2,3-dihydropyrimidin-4(5H)-one 4 with a variety of electrophilic and nucleophilic reagents under a variety of… read more here.
Keywords: synthesis new; diketone heterocyclic; nmr spectra; utility diketone ... See more keywords