Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents, Part I: Pyridine mono-carboxylic acids [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.
Marinković Aleksandar D. +3 more
doaj +3 more sources
Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides [PDF]
Journal of the Serbian Chemical Society, 2006 The rate constants for the reaction of three isomeric pyridine mono-carbocylic acid N-oxides with diazodiphenylmethane were determined at 30 ºC in thirty two protic and aprotic solvents by the well known UV spectrophotometric method.
MILICA MISIC-VUKOVIC +3 more
doaj +5 more sources
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
core +6 more sources
Facile Synthesis of Some Novel Pyrido[3', 2': 4, 5]thieno[2,3-b][1,4]thiazine-8-carboxylic Acids [PDF]
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
doaj +2 more sources
Action of Thionyl Chloride on Carboxylic Acids in Presence of Pyridine [PDF]
Nature, 1946 THE catalytic effect of small amounts of pyridine in the reaction between thionyl chloride and carboxylic acids is well known; Carre and Libermann1 have shown further that it is of great advantage to use equimolar quantities of acid, pyridine, and thionyl chloride, the acid chloride then being formed rapidly at lower temperatures, in high yield.
J P E, HUMAN, J A, MILLS
exaly +3 more sources
A Novel Approach in Cinnamic Acid Synthesis: Direct Synthesis of Cinnamic Acids from Aromatic Aldehydes and Aliphatic Carboxylic Acids in the Presence of Boron Tribromide [PDF]
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
Structural Studies on Solvates of Cyclic Imide Tethered Carboxylic Acids with Pyridine and Quinoline [PDF]
, 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 +15 more sources
Formation of amides: one-pot condensation of carboxylic acids and amines mediated by TiCl4 [PDF]
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
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 +2 more sources
2-(Phenylsulfanyl)pyridine-3-carboxylic acid [PDF]
Acta Crystallographica Section E Structure Reports Online, 2009 The title compound, C(12)H(9)NO(2)S, belongs to the nitro-gen-containing group of heterocyclic organic compounds and crystallized with two mol-ecules per asymmetric unit. In the crystal, both molecules form investment dimers linked by pairs of O-H-O hydrogen bonds. Weak symmetry-related C-H-O inter-actions link the carboxyl dimers along b axis.
Muhammad Naeem Khan +4 more
openaire +3 more sources