Results 251 to 260 of about 51,809 (295)

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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Coordinatively polymeric and monomeric bismuth(iii) complexes with pyridine carboxylic acids

Dalton Trans., 2010
Three crystalline compounds, [Bi(2-O(2)C-C(5)H(4)N)(3)](n) (), {Bi[(2,6-O(2)C)(2)C(5)H(3)N)][(2-HO(2)C-6-O(2)C)C(5)H(3)N].H(2)O}(n) (3) and Bi(O(2)CC(9)H(6)N)(2)(O(3)N)(O(2)CC(9)H(6)NH).2H(2)O () have been prepared by simple reactions in aqueous medium using the readily available bismuth nitrate and the corresponding acids, picolinic acid, dipicolinic ...
O, Anjaneyulu, T K, Prasad, K C Kumara, Swamy   +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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4-(Dimethylamino)pyridine-catalysed iodolactonisation of γ,δ-unsaturated carboxylic acids

Organic & Biomolecular Chemistry, 2015
4-(Dimethylamino)pyridine functioned as an excellent catalyst for iodolactonization reactions of γ,δ-unsaturated carboxylic acids, affording γ-lactones, δ-lactones, or both.
Chuisong, Meng, Zhihui, Liu, Yuxiu, Liu, Qingmin, Wang   +3 more
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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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OXIDATION OF CERTAIN METHYLPYRIDINES TO PYRIDINE CARBOXYLIC ACIDS

The Journal of Organic Chemistry, 1949
G, BLACK, E, DEPP, B B, CORSON
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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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The Schmidt reaction with pyridine carboxylic acids

Chemistry of Heterocyclic Compounds, 1969
V. L. Zbarskii, G. M. Shutov, V. F. Zhilin, E. Yu. Orlova   +3 more
openaire   +1 more source

Hydrogenation of Carboxylic Acids, Esters, and Related Compounds over Heterogeneous Catalysts: A Step toward Sustainable and Carbon-Neutral Processes

Chemical Reviews, 2023
Kathrin Junge, Matthias Beller
exaly