Results 21 to 30 of about 226,914 (312)

Ammonium Phenylphosphonamidodiselenoates and Phenylphosphonamidodi-selenoic Diamides from the Selenation of Primary and Secondary Amines [PDF]

, 2011
The authors are thankful to the University of St Andrews and the Engineering and Physical Science Research Council (EPSRC, U.K.) for financial support.By reacting two equivalents of primary or secondary amines with 2,4-bis(phenyl)-1,3 ...
Woollins, J. Derek, Randall, Rebecca A. M., Hua, Guoxiong, Slawin, Alexandra M. Z., J. Derek Woollins, Rebecca A. M. Randall, Alexandra M. Z. Slawin, Guoxiong Hua, Woollins, J. Derek; id_orcid, Slawin, Alexandra M. Z.; id_orcid   +9 more
core   +1 more source

Efficient methods for microwave assisted regioselective aminations of 3,6-dichloropyridazines: novel synthesis of (E)-2-(3,6-dichloropyridazin-4-yl)vinyl-amines

, 2023
A general and selective, microwave mediated synthesis of 5-methyl-pyridazin-3-amines (3a-e) and (E)-2-(3,6-dichloropyridazin-4-yl)vinyl-amines (8a-u and 9a-h) has been described starting from methyl-dichloropyridazines (2a and 2b).
Márk Molnár (9284889), János Tatai (2471533), Bence Pollák (16869596), Miklós Nyerges (728266)   +3 more
core   +1 more source

Direct and Modular Access to Allylic Amines via Nickel-Catalyzed Three-Component Coupling [PDF]

, 2023
The preparation of allylic amines by transition metal catalysis has played an important role in synthetic chemistry; however, the main employment of prefunctionalized coupling partners through multistep synthesis from available starting materials limits ...
Changyu, Xu, Zhan, Dong, Jianchao, Chang, Liangliang, Song, Liang-An, Chen   +4 more
core   +2 more sources

Thiocyanatochrome complexes in analytical chemistry: Determination of osmium(III) [PDF]

Journal of the Serbian Chemical Society, 2005
New complex combinations of Os(III) complexed with thiourea and ethyl thiourea, as well as of complex anions of Cr(III) analogues of Reineke’s salt, [Cr(CNS)4(amine)2]-, where the amine is aniline, benzylamine morpholine etc., were synthesized.
Bratulescu George, Ganescu Ion, Ganescu Anca   +2 more
doaj   +1 more source

Prodrugs for Amines [PDF]

Molecules, 2008
The purpose of this work is to review the published strategies for the productionof prodrugs of amines. The review is divided in two main groups of approaches: those thatrely on enzymatic activation and those that take advantage of physiological chemicalconditions for release of the drugs.
John F. Gilmer, John M. Clancy, Ana L. Simplício   +2 more
openaire   +3 more sources

Reactivity of 4,5-Dichlorophthalic Anhydride towards Thiosemicarbazide and Amines: Synthesis, Spectroscopic Analysis, and DFT Study

Molecules, 2022
The cyclic anhydrides are broadly employed in several fields, such as the chemical, plastic, agrochemical, and pharmaceutical industries. This study describes the chemical reactivity of 4,5-dichlorophthalic anhydride towards several nucleophiles ...
Hatem A. Abuelizz, Ahmed H. Bakheit, Mohamed Marzouk, Mohamed M. Abdellatif, Rashad Al-Salahi   +4 more
doaj   +1 more source

Exergy-based sustainability analysis of biogas upgrading using a hybrid solvent (imidazolium-based ionic liquid and aqueous monodiethanolamine) [PDF]

Biofuel Research Journal, 2023
Energy may be generated in large quantities from fossil fuels, but this comes with environmental concerns. Thus, renewable resources like biogas, comprising carbon dioxide and methane, should be used alone or in combination with fossil fuels to mitigate ...
Bilal Kazmi, Syed Imran Ali, Zahoor Ul Hussain Awan   +2 more
doaj   +1 more source

Pentafluoropropionic Anhydride Derivatization and GC-MS Analysis of Histamine, Agmatine, Putrescine, and Spermidine: Effects of Solvents and Starting Column Temperature

Molecules, 2023
Gas chromatography–mass spectrometry (GC-MS) is useful for the quantitative determination of the polyamines spermidine (SPD) and putrescine (PUT) and of the biogenic amine agmatine (AGM) in biological samples after derivatization.
Dimitrios Tsikas, Bibiana Beckmann, Svetlana Baskal, Gorig Brunner   +3 more
doaj   +1 more source

Benzamidomethylation with (Benzamidomethyl)triethylammonium Chloride. 2. A Simple Method for Benzamidomethylation of Thiols, Amines and Carboxylic Acids

Molecules, 2000
Thiols and amines were benzamidomethylated in water solution at room temperature with (benzamidomethyl)triethylammonium chloride (1) in the presence of a small quantity of triethylamine (pH>9).
Emil Popovski, Drazen Vikic-Topic, Ljiljana Klisarova   +2 more
doaj   +1 more source

Michael addition of aromatic and aliphatic amines to unsaturated olefines in the presence of TMSCl under solvent free conditions [PDF]

شیمی کاربردی روز, 2008
An operationally simple and highly fast protocol for TMSCl (10 mol%) catalyzed conjugate addition of aromatic and aliphatic amines derivatives to unsaturated carbonyl compounds in good to excellent yields has been developed.
Najmadin Azizi
doaj   +1 more source