Results 21 to 30 of about 4,204 (201)
Molecules, 2023 While fluorescent organic materials have many potential as well as proven applications and so have attracted significant attention, pyridine–olefin conjugates remain a less studied subset of such systems.
Weiguang Yang +5 more
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The Reaction of 2-Aminopyridines with Ethyl Diazoacetate
CHIMIA, 1974 It has been found that ethyl diazoacetate reacted with 2- amino-pyridines to give the corresponding 2-carbethoxy- methylaminopyridines (1). In m-xylene as solvent, thermal decomposition of the diazo ester proceeded with preferential attack on m-xylene ...
B. Doma +3 more
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Microwave-assisted Bohlmann–Rahtz synthesis of highly-substituted 2-aminonicotinates [PDF]
, 2016 Microwave irradiation of 2-carbethoxyacetamidine and an ethynyl ketone under acidic or basic conditions in ethanol at 150 °C for 1.5 h facilitated Bohlmann-Rahtz pyridine synthesis to give highly-substituted ethyl 2 aminonicotinates with total ...
Alnomsy, Ayed +2 more
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The Ring Transformation of 3-Methyl-5-nitropyrimidin-4(3H)-one
Molecules, 2003 3-Methyl-5-nitropyrimidin-4(3H)-one readily reacts with carbonyl compounds to produce three kinds of ring transformations. The nitropyrimidinone behaves as the synthetic equivalent of activated diformylamine affording 3,5-difunctionalized 4-pyridones, 4 ...
Masahiro Ariga +4 more
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Molbank, 2021 Synthesis of a series of the substituted [(pyridinyl and pyrimidin-2-ylimino)-ethyl]-4-hydroxy-chromen-2-ones and their tetrazole derivates is presented in this study. By catalytic condensation of 4-hydroxy-3-acetylcoumarine 2 and 2-aminopyridines 3(a-d),
Ramiz Hoti +5 more
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Pyridinium N-2 '-pyridylaminide: radical cyclization in the synthesis of annulated 2-aminopyridines [PDF]
, 2006 The synthesis of annulated 2-aminopyridines by intramolecular radical pyridylation of the appropriate substrates, obtained from pyridinium N-2'-pyridylaminide, can be performed using TTMSS and AIBN.Financial support by the CICYT (Project CTQ2005-08902 ...
Burgos García, Carolina +3 more
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Synthesis of [(4-Chloro-5H-1,2,3-dithiazol-5-ylidene)amino]azines
Molecules, 2011 The reactions of 2-, 3- and 4-aminopyridines with 4,5-dichloro-1,2,3-dithiazol-ium chloride (Appel salt) 4 to give N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)pyridin-X-amines 1a (X = 2), 1g (X = 3) and 1k (X = 4) were optimized with respect to base ...
Panayiotis A. Koutentis +2 more
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A structural systematic study of three isomers of difluoro-N-(4-pyridyl)benzamide [PDF]
, 2008 The isomers 2,3-, (I), 2,4-, (II), and 2,5-difluoro-N-(4-pyridyl)benzamide, (III), all with formula C₁₂H₈F₂N₂O, all exhibit intramolecular C-H...O=C and N-H...F contacts [both with S(6) motifs].
Anderson, Frankie P. +3 more
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Remote Hydroamination of Disubstituted Alkenes by a Combination of Isomerization and Regioselective N-H Addition. [PDF]
, 2023 Remote hydrofunctionalizations of alkenes incorporate functional groups distal to existing carbon-carbon double bonds. While remote carbonylations are well-known, remote hydrofunctionalizations are most common for addition of relatively nonpolar B-H, Si ...
Day, Craig +4 more
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Tropical Medicine and Infectious Disease, 2023 Chagas disease is derived from the infection by the protozoan Trypanosoma cruzi. In many countries, benznidazole is the only drug approved for clinical use despite several side effects and the emergence of resistant parasite strains. In this context, our
Rafaela Silva-Oliveira +5 more
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