Results 31 to 40 of about 79,537 (266)

Dielectric Relaxation Studies of Hydrogen Bonded Complexes of Benzamide and Acetamide with Halogenated Phenols Using X-band Microwave Frequency

ASEAN Journal on Science and Technology for Development, 2021
At 308 K, using a 9.37 GHz dielectric relaxation setup, dielectric studies of hydrogen bonded complexes of benzamide and acetamide with 4-fluorophenol, 4-bromophenol, 4-chlorophenol, and 4-iodophenol in benzene were performed.
A. Aathif Basha, F. Liakath Ali Khan
doaj   +1 more source

Regioselective Ortho Halogenation of N-Aryl Amides and Ureas via Oxidative Halodeboronation: Harnessing Boron Reactivity for Efficient C-Halogen Bond Installation [PDF]

, 2023
The installation of the C-halogen bond to the ortho position of N-aryl amides and ureas represents a tool to prepare motifs that are ubiquitous in biologically active compounds.
Ganesh , Shinde, Ganesh, Ghotekar, Per-Ola, Norrby, Lars, Öhrström, Francoise, Amombo Noa, Henrik, Sundén   +5 more
core   +1 more source

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

Synthesis and Biological Evaluation of tert-Butyl Ester and Ethyl Ester Prodrugs of L-γ-Methyleneglutamic Acid Amides for Cancer [PDF]

, 2022
In cancer cells, glutaminolysis is the primary source of biosynthetic precursors. Recent efforts to develop amino acid analogues to inhibit glutamine metabolism in cancer have been extensive.
Md Imdadul , Khan, Seong Jong , Kim, Fakhri , Mahdi, Md Imran , Hossain, Patrice , Penfornis, Suresh, Sulochana, Jason, Paris, Hoang, Le, Chalet , Tan, Nicholas, Akins, Pier Paolo , Claudio, Tristan, Tran, Amna, Adam   +12 more
core   +2 more sources

Ir-Catalyzed Chemodivergent Allenylic Alkylation of Vinyl Az-ides: Highly Enantioselective Synthesis of α-Allenylic Amides and Ketones [PDF]

, 2021
Enantioselective allenylic alkylation reactions of unstabilized enolates have never been reported. We now present a unified fragment-coupling strategy for the first enantioselective synthesis of α-allenylic amides and ketones through allenyl-ic ...
Aditya, Chakrabarty, Santanu, Mukherjee
core   +1 more source

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

Origins of Chemoselectivity in the Ni-Catalyzed Biaryl and Pd-Catalyzed Acyl Suzuki–Miyaura Cross-Coupling of N‑Acetyl-Amides

, 2019
The mechanisms and origins of selectivity in the Pd-catalyzed nondecarbonylative and Ni-catalyzed decarbonylative Suzuki–Miyaura cross-coupling of N-acetyl-amides have been explored with density functional theory calculations.
Xiaojiao Jin, Yanfeng Dang (1489129), Riqing Li, Riqing Li (5143640), Xiaojiao Jin (8191746), Ning Zhao, Ning Zhao (84707), Hui Xu, Hui Xu (9203), Yanfeng Dang   +9 more
core   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +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