Results 31 to 40 of about 48,089 (168)

Probing Reactivity with External Forces: The Case of Nitroacetamides in Water

Molecules, 2023
Many computational methods have been applied to interpret and predict changes in reactivity by slight modifications of a given molecular scaffold. We describe a novel and simple method based on approximate density-functional theory of valence electrons ...
Giovanni La Penna, Fabrizio Machetti
doaj   +1 more source

Thermochemical Properties and Regularities of Amides, Anilides, and Amidic Acids

Acta Chimica Slovenica, 2018
The thermodynamic properties of carbamide and its alkyl substituted were studied insufficiently. In this article, the enthalpies of combustion of ΔсН of some amides, anilides and amidic acids have been determined experimentally; their standard enthalpies of formation have been calculated.
Alma Kairlapovna Ryskaliyeva, Murat Ergalievich Baltabayev, Aigul Moldakhmetovna Zhubatova   +2 more
openaire   +4 more sources

Enantioselective synthesis of γ-chiral amides via copper-catalyzed reductive relay hydroaminocarbonylation

Nature Communications
Chiral amides are common and effective structural motifs found in many pharmaceuticals and biologically active molecules. Despite their importance, existing synthetic methods are predominantly employed for the synthesis of α-amides and β-amides.
Yang Yuan, Youcan Zhang, Xiao-Feng Wu
doaj   +1 more source

Multi-environment evaluations across ecological regions reveal climate and soil effects on amides contents in Chinese prickly ash peels (Zanthoxylum bungeanum Maxim.)

BMC Plant Biology, 2023
Background Environmental factors difference is the key factor for the difference in the production, transformation and accumulation of effective components in plants.
Tao Zheng, Hai-tao Zeng, Bing-yin Sun, Shu-ming Liu   +3 more
doaj   +1 more source

Ammonothermal Synthesis and Crystal Structures of Diamminetriamidodizinc Chloride [Zn2(NH3)2(NH2)3]Cl and Diamminemonoamidozinc Bromide [Zn(NH3)2(NH2)]Br

Inorganics, 2016
The treatment of excess zinc in the presence of ammonium chloride under ammonothermal conditions of 873 K and 97 MPa leads to diamminetriamidodizinc chloride [Zn2(NH3)2(NH2)3]Cl with a two-dimensionally μ-amido-interconnected substructure.
Theresia M. M. Richter, Sabine Strobel, Nicolas S. A. Alt, Eberhard Schlücker, Rainer Niewa   +4 more
doaj   +1 more source

Synthesis and anion recognition properties of shape-persistent binaphthyl-containing chiral macrocyclic amides

Beilstein Journal of Organic Chemistry, 2012
We report on the synthesis and characterization of novel shape-persistent, optically active arylamide macrocycles, which can be obtained using a one-pot methodology.
Marco Caricato, Nerea Jordana Leza, Claudia Gargiulli, Giuseppe Gattuso, Daniele Dondi, Dario Pasini   +5 more
doaj   +1 more source

Direct esterification of amides by the dimethylsulfate-mediated activation of amide C–N bonds

Communications Chemistry
Amides are important intermediates in organic chemistry and the pharmaceutical industry, but their low reactivity requires catalysts and/or severe reaction conditions for esterification.
Hongjian Qin, Zijian Han, Emmanuel Mintah Bonku, Haiguo Sun, Abdullajon Odilov, Fuqiang Zhu, Safomuddin Abduahadi, Weiliang Zhu, Jingshan Shen, Haji A. Aisa   +9 more
doaj   +1 more source

p-Coumaroyl Amides from the Plant Kingdom: A Comprehensive Review of Natural Sources, Biosynthesis, and Biological Activities

Molecules
Hydroxycinnamic acids are widely distributed in the plant kingdom, both as free compounds and as conjugates with other molecules, such as amino acids, carbohydrates, alcohols or amines, and polyamines, forming different derivatives, such as amides ...
Federico Berti, Elena Maria Tamburello, Cristina Forzato   +2 more
doaj   +1 more source

A practical route to tertiary diarylmethylamides or -carbamates from imines, organozinc reagents and acyl chlorides or chloroformates

Beilstein Journal of Organic Chemistry, 2011
A practical route to tertiary diarylmethylamides or -carbamates from imines, organozinc reagents and acyl chlorides or chloroformates is described. This route involves the formation of an imine, which is used without isolation, followed by its activation
Erwan Le Gall, Antoine Pignon, Thierry Martens   +2 more
doaj   +1 more source

The use of isoxazoline and isoxazole scaffolding in the design of novel thiourea and amide liquid-crystalline compounds

Beilstein Journal of Organic Chemistry, 2020
A series of novel thiourea and amide liquid crystals containing 5-membered isoxazoline and isoxazole rings were synthetized and the liquid crystal properties studied.
Itamar L. Gonçalves, Rafaela R. da Rosa, Vera L. Eifler-Lima, Aloir A. Merlo   +3 more
doaj   +1 more source