Results 21 to 30 of about 17,511 (250)
Facile Synthesis of Some Novel Pyrido[3', 2': 4, 5]thieno[2,3-b][1,4]thiazine-8-carboxylic Acids
Molecules, 2007 Model tetrahydropyrido[3',2':4,5]thieno[2,3-b][1,4]thiazines 9a-c were synthesized via reductive lactamization, using sodium dithionite, of the respective 2-[(carboxyalkyl)thio]-3-nitro-4,7-dihydrothieno[2,3-b]pyridine-5-carboxylic acids 7a-c. The latter
Salim S Sabri +4 more
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A Simple Method for Synthesis of Active Esters of Isonicotinic and Picolinic Acids
Molecules, 2001 A method for preparation of the p-nitrophenyl-, N-hydroxysuccinimidyl- and pentafluorophenyl esters of isonicotinic and picolinic acids from the corresponding acids is reported.
Jørn B. Christensen
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Separations, 2021 Natural phenol and phenolic acids are widely distributed in the plant kingdom and the major dietary sources include fruits and beverages derived therefrom.
Alessio Incocciati +4 more
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Synthesis, structural characterization and antimicrobial evaluation of some novel piperidin-4-one oxime esters [PDF]
Journal of the Serbian Chemical Society, 2015 Fifteen novel biologically active piperidin-4-one oxime esters (8-22) have been synthesized with good yields. These compounds were prepared from in-situ activated carboxylic acids using POCl3 and pyridine with piperidin-4- one oximes.
Krishnan Gokula K. +2 more
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Chemistry of Heterocyclic Compounds, 1966 A number of amides and hydrazides of 4-phenyl-2,5-pyridine dicarboxylic acids are synthesized. © 1966 The Faraday Press, Inc.
Prostakov N.S. +3 more
openaire +3 more sources
Molecules, 2005 Cinnamic acids have been prepared in moderate to high yields by a new direct synthesis using aromatic aldehydes and aliphatic carboxylic acids, in the presence of boron tribromide as reagent, 4-dimethylaminopyridine (4-DMAP) and pyridine (Py) as bases ...
M. Onciu, F. Tanasa, C. Chiriac
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Cocrystals Based on 4,4’-bipyridine: Influence of Crystal Packing on Melting Point
Crystals, 2021 The reactions of piperonylic acid (HPip) and cinnamic acid (HCinn) with 4,4’-bipyridine (4,4’-bipy) have been assayed using the same synthetic methodology, yielding two binary cocrystals with different acid:4,4’-bipy molar ratios, (HPip)(4,4’-bipy) (1 ...
Daniel Ejarque +3 more
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Formation of amides: one-pot condensation of carboxylic acids and amines mediated by TiCl4
Chemistry Central Journal, 2017 A general procedure for the synthesis of amides via the direct condensation of carboxylic acids and amines in the presence of TiCl4 is reported. The amidation reaction was performed in pyridine at 85 °C with a wide range of substrates providing the ...
Antonella Leggio +5 more
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A facile synthesis and characterization of some novel benzimidazole derivatives
Results in Chemistry, 2023 We successfully synthesized a series of novel benzimidazole derivatives with high yields in our current research study. The synthesis procedure involved condensing Ethyl 3-[[3-amino-4-(treiethylamino) benzoyl] (pyridine-5-yl) amino]-propanoate with ...
Rahul B. Shinde +7 more
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Crystals, 2018 Selected recent examples of coordination polymers (CPs) or metal-organic frameworks (MOFs) constructed from different multifunctional carboxylic acids with phenyl-pyridine or biphenyl cores have been discussed.
Jinzhong Gu +5 more
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