Results 271 to 280 of about 197,331 (314)

Carboxylic acid–pyridine supramolecular heterocatemer in a co-crystal

Journal of Molecular Structure, 2008
Abstract Robustness of carboxylic acid–pyridine supramolecular heterosynthon was examined in three 1:2 binary co-crystals of 4,4′-bipyridine with monocarboxylic acids, (4,4′-bipyridine)·( dl -hydroxyphenylacetic acid)2, 1; (4,4′-bipyridine)0.5·(4-bromonaphthalene-1-carboxylic acid), 2 and (4,4′-bipyridine)0.5·(4-methylbenzoic acid), 3.
P. Sudhakar, R. Srivijaya, B.R. Sreekanth, P.K. Jayanthi, Peddy Vishweshwar, Moses J. Babu, K. Vyas, Javed Iqbal   +7 more
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2‐carbaldoximes of pyridine‐4‐ and 5‐carboxylic acids

Journal of Heterocyclic Chemistry, 1995
AbstractA series of pyridine‐2‐carbaldoximes, all of which are substituted at the 4‐ or 5‐position with derivatives of the corresponding carboxylic acids, have been prepared via the corresponding pyridine‐2‐carbaldehydes.
Hector Manuel Reyes‐Rivera, Robert O. Hutehins, David R. Dalton   +2 more
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Action of Thionyl Chloride on Carboxylic Acids in Presence of Pyridine

Nature, 1953
IN order to use thionyl chloride most effectively for the preparation of acyl chloride, RCO.Cl, a knowledge of the sequence of reactions occurring is desirable. Trichloroacetic acid reacts extremely slowly with thionyl chloride even at higher temperatures; but Carre and Libermann1 have shown that pyridine (1 mol.) helps the reaction.
J A, CADE, W, GERRARD
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Metal(II)-promoted hydrolysis of pyridine-2-carbonitrile to pyridine-2-carboxylic acid. The structure of [Cu(pyridine-2-carboxylate)2] · 2H2O

Polyhedron, 1998
Abstract Pyridine-2-carbonitrile (2-CNpy) undergoes Cu(II) or Co(II)-promoted hydrolysis to pyridine-2-carboxamide (piaH) and/or pyridine-2-carboxylic acid (pycH). The pathway of pycH formation depends on the presence of 2-amino-2-hydroxymethyl-1,3-propanediol (AL1) and on the central atom.
P. Segl’a, M. Jamnický, M. Koman, J. Šima, T. Glowiak   +4 more
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A simple polymerisable carboxylic acid receptor: 2-acrylamido pyridine

TrAC Trends in Analytical Chemistry, 1999
Abstract The self-association constant of 2-acrylamido pyridine (AAPY) and its temperature-dependence was determined by 2D-NOE-NMR spectroscopy. AAPY was shown to be a versatile polymerisable receptor for a variety of carboxylic acid derivatives.
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Infrared Spectroscopic Analysis of the Adsorption of Pyridine Carboxylic Acids on Colloidal Ceria.

Langmuir, 2017
J. L. Marsh, Ashley E. Wayman, Nicole M Smiddy, D. Campbell, J. Parker, Wayne B. Bosma, E. Remsen   +6 more
semanticscholar   +1 more source

Complicated Composting: Persistent Pyridine Carboxylic Acid Herbicides

2015
This paper reviews pyridine carboxylic acid herbicide impacts on compost. Pyridine carboxylic acid herbicides are not completely broken down during grass growth, harvest and drying of hay, in the digestive tract of livestock, or during composting. These herbicides are a popular choice for broadleaf weed control because of this persistence: they remain ...
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Efficient Preparation of Imidazo[1,5-a]pyridine-1-carboxylic Acids

Synthesis, 2016
Dmytro O. Tverdiy, Maksym O. Chekanov, Pavlo V. Savitskiy, A. Syniugin, S. M. Yarmoliuk, A. Fokin   +5 more
semanticscholar   +1 more source

Reactive Extraction of Pyridine Carboxylic Acids with N, N-Dioctyloctan-1-Amine: Experimental and Theoretical Studies

, 2013
D. Datta, Sushil Kumar
semanticscholar   +1 more source

Studies in the pyridine carboxylic acid series

Pharmaceutical Chemistry Journal, 1969
V. I. Trubnikov, V. V. Petrov, E. S. Zhdanovich, N. A. Preobrazhenskii   +3 more
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