Results 21 to 30 of about 68,963 (231)

An Attractive and Efficient Procedure for Synthesis of Heterocyclic Structures: MNPs-Bis(2-Hydroxyethyl)-Guanidine-Ni Nanocomposite as a Novel and Green Nanomagnetic Catalyst for Multicomponent Reactions

, 2022
Now, in this paper, we report the successful fabrication of MNPs-bis(2-hydroxyethyl)-guanidine-Ni nanocatalyst and study its catalytic behavior for the synthesis of pyrano[2,3-c]pyrazoles and highly functionalized piperidines.
Nasier Saadoon (14124962), Hawraa A. Kareem (13928967), Ahmed M. Abdulhadi (14124959), Zuhair I. Al Mashhadani (14124965), Indrajit Patra (13583519)   +4 more
core   +1 more source

Excited States of apo-Guanidine-III Riboswitch Contribute to Guanidinium Binding through Both Conformational and Induced-Fit Mechanisms

, 2023
Riboswitches are mRNA segments that regulate gene expression through conformational changes driven by their cognate ligand binding. The ykkC motif forms a riboswitch class that selectively senses a guanidinium ion (Gdm+) and regulates the downstream ...
Govardhan Reddy (1662886), Kushal Singh (569854)   +1 more
core   +1 more source

Guanidine-Based Covalent Organic Frameworks: Cooperation between Cores and Linkers for Chromic Sensing and Efficient CO₂ Conversion

, 2023
C(sp)–H carboxylation with CO2 is an attractive route of CO2 utilization and is traditionally promoted by transition metal catalysts, and organocatalysis for the conversion remains rarely explored and challenging.
Peng-Fei Mu, Ya-Wei Liu (606320), Ran Bu, Li-Fei Xiong, Lin Zhang, Ya-Wei Liu, Peng-Fei Mu (14502224), En-Qing Gao (1446580), Ran Bu (5006918), Li-Fei Xiong (14502227), Lin Zhang (8926), En-Qing Gao   +11 more
core   +1 more source

(2,4,6-Trinitrophenyl)guanidine [PDF]

, 2007
(2,4,6-Trinitrophenyl)guanidine (picrylguanidine), C7H6N6O6, from the reaction of picrylsulfonic acid with guanidine carbonate, forms a three-dimensional framework structure through extensive hydrogen-bonding interactions, extending the centrosymmetric ...
Smith, Graham, Wermuth, Urs D., Wermuth, Urs, M. White, Jonathan, White, Jonathan M., White, Jonathan M, Wermuth, Urs D   +6 more
core   +2 more sources

Highly potent, selective acylguanidine-type histamine H2 receptor agonists: synthesis and structure-activity relationships [PDF]

, 2008
Potent and selective histamine H2 receptor (H2R) agonists are valuable pharmacological tools and might be of therapeutic value as drugs, for example in the treatment of severe congestive heart failure.
Kraus, Anja
core   +1 more source

E-Z Isomerization in Guanidine: Second-order Saddle Dynamics, Non-statisticality, and Time-frequency Analysis [PDF]

, 2022
Our recent work on the E-Z isomerization reaction of guanidine using ab initio chemical dynamics simulations [Rashmi et al, Regul. Chaotic Dyn. 2021, 26, 119] emphasized the role of second-order saddle (SOS) in the isomerization reaction; however could ...
Manikandan, Paranjothy, Richa, Rashmi, Upakarasamy, Lourderaj, Aniruddha, Seal, Pankaj Kumar, Yadav   +4 more
core   +1 more source

Synthesis of pyrimidines using nano-NiZr4 (PO4)6 as a retrievable and robust heterogeneous catalyst [PDF]

Nanochemistry Research, 2020
Nano-NiZr4 (PO4)6 has been used as an effective and retrievable heterogeneous catalyst for the synthesis of pyrimidines through the reaction of benzaldehydes, guanidinehydrochloride and malononitrile under reflux conditions in ethanol.
Hossein Shahbazi-Alavi, Javad Safaei-Ghomi   +1 more
doaj   +1 more source

Direct air capture of CO2 – topological analysis of the experimental electron density (QTAIM) of the highly insoluble carbonate salt of a 2,6-pyridine-bis(iminoguanidine), (PyBIGH2)(CO3)(H2O)4

IUCrJ, 2019
Chemical bonding and all intermolecular interactions in the highly insoluble carbonate salt of a 2,6-pyridine-bis(iminoguanidine), (PyBIGH2)(CO3)(H2O)4, recently employed in the direct air capture of CO2 via crystallization, have been analyzed within the
Christopher G. Gianopoulos, Zhijie Chua, Vladimir V. Zhurov, Charles A. Seipp, Xiaoping Wang, Radu Custelcean, A. Alan Pinkerton   +6 more
doaj   +1 more source

Dependence of Antimicrobial Effects of Guanidine-containing Pectin Derivatives from Some Structural Characteristics

Разработка и регистрация лекарственных средств, 2022
Introduction. Up to the present time, there are practically no studies on the relationship between the structural characteristics and biological activity of antimicrobial polymers synthesized by the chemical addition of guanidine groups to polysaccharide
O. R. Akhmedov, S. A. Shomurotov, A. S. Turaev, A. V. Sidarenka   +3 more
doaj   +1 more source

Guanidine-Based Chloroaluminate Electrolyte: A Candidate for a Rechargeable Aluminum Battery

Rechargeable aluminum-ion batteries remain an important technological target as an alternative to lithium. Here, acidic room-temperature ionic liquid analogue electrolytes (ILAs) were synthesized from guanidine hydrochloride salt (GuanHCl) and aluminum ...
Iwan Sumarlan (16501694), Anthony J Lucio (11500030), Karl Ryder (20340378), Rob Hillman (12418048), Anand Kunverji (16994188), Georgina Elliott (21804180)   +5 more
core   +5 more sources