Results 11 to 20 of about 1,014,531 (338)
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
doaj +2 more sources
Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. [PDF]
Journal of the Serbian Chemical Society, 2005 Rate constants for the reaction of diazodiphenylmethane with isomeric pyridine carboxylic acids were determined in chosen protic and aprotic solvents at 30 °C, using the well known UV spectrophotometric method.
ALEKSANDAR D. MARINKOVIC +3 more
doaj +1 more source
Structural Studies on Solvates of Cyclic Imide Tethered Carboxylic Acids with Pyridine and Quinoline
, 2016 Structures of eight solvates of cyclic imide tethered carboxylic acids and aromatic tetra carboxylic acids with pyridine (solvate I−VI) and quinoline (VII−VIII) are determined.
Devendra Singh (367341) +2 more
core +8 more sources
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
doaj +1 more source
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
doaj +1 more source
Reaction of Pyridine Bases with Carboxylic Acids in Benzene [PDF]
Bulletin of the Chemical Society of Japan, 1977 Abstract The reaction of pyridine bases with aliphatic monocarboxylic acids has been studied by means of the partition method. Partition was carried out at 25 °C between benzene and 0.10 mol dm−3 (Na, H) ClO4 aqueous solution, the total concentration of pyridine base and that of carboxylic acid being less than 2×10−2 mol dm−3 and 1.0 mol
Katsumi Hirose, Motoharu Tanaka
openaire +1 more source
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
doaj +1 more source
, 2022 A carboxylic acid is an organic acid that contains a carboxyl group (C(=O)OH) attached to an R-group. The general formula of a carboxylic acid is R−COOH or R−CO2H, with R referring to the alkyl, alkenyl, aryl, or other group.
Małgorzata Wolniewicz
core +1 more source
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
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
doaj +1 more source