Results 41 to 50 of about 2,325,545 (220)

Multicomponent Synthesis of Potentially Biologically Active Heterocycles Containing a Phosphonate or a Phosphine Oxide Moiety

open access: yesActa Chimica Slovenica, 2022
Several multicomponent synthetic approaches were elaborated for plenty of novel nitrogen or oxygen heterocycles containing a phosphonate or a phosphine oxide moiety.
Nóra Popovics-Tóth, Erika Bálint
doaj   +1 more source

Molecular Recognition by Halogen Bonding With Atomic Precision in a Covalent Organic Cage

open access: yesAngewandte Chemie, EarlyView.
A covalent organic cage embedding a single inward‐facing halogen‐bond (XB) donor enables recognition of DMMP, a Sarin surrogate, with atomic precision through halogen bonding, while both the hydrogen bonding donor encaged analogue and the XB donor open model ‐lacking cavity‐ show no affinity.
Pierre‐Antoine Dupin   +9 more
wiley   +2 more sources

First DMAP-mediated direct conversion of Morita–Baylis–Hillman alcohols into γ-ketoallylphosphonates: Synthesis of γ-aminoallylphosphonates

open access: yesBeilstein Journal of Organic Chemistry, 2016
An efficient synthesis of a series of γ-ketoallylphosphonates through a direct conversion of both primary and secondary Morita–Baylis–Hillman (MBH) alcohols by trialkyl phosphites with or without DMAP, used as additive, and under solvent-free conditions,
Marwa Ayadi   +3 more
doaj   +1 more source

NHC‐Copper(I)‐Mediated Functionalization of White Phosphorus

open access: yesAngewandte Chemie, EarlyView.
White phosphorus is functionalized by N‐heterocyclic carbene supported copper(I) complexes through redox‐neutral steps. Treatment of the resulting complexes with electrophiles releases the ligands from the metal center as asymmetrically substituted organophosphorus butterfly compounds.
Thomas M. Horsley Downie   +4 more
wiley   +2 more sources

Organophosphorus chemistry: therapeutic intervention in mechanisms of viral and cellular replication

open access: yes, 2005
Literature publications (up to September 2004) concerning the targeted intervention of organophosphorus synthons in mechanisms of the replicative cycle, and the therapeutic benefits resulting (of particular relevance to anticancer and antiviral ...
Hudson, H.R.   +2 more
core   +1 more source

Synthesis of Fused sp3‐Enriched Imidazoles

open access: yesChemistryOpen
A synthetic approach to imidazoles annulated to saturated six‐membered cycles featuring S, SO2, NH, NCbz was developed. It was achieved by combining the Neber rearrangement and the Marckwald reaction.
Viacheslav Lysenko   +5 more
doaj   +1 more source

Decoding Synergistic Pathways in Bimetallic MOFs for Advanced Oxidation Processes

open access: yesAdvanced Materials, EarlyView.
This review presents a unified framework linking metal pairing and framework design with electronic structure, redox cycling, oxidant activation, reactive‐species generation, and catalytic performance across photocatalytic and oxidant‐based BMOF‐AOPs. The resulting design principles guide the development of hydrolytically stable and efficient BMOFs for
Karim El‐Naggar   +2 more
wiley   +1 more source

Michaelis-Arbuzov-Type Reaction of 1-Imidoalkyltriarylphosphonium Salts with Selected Phosphorus Nucleophiles

open access: yesMolecules, 2019
In this study, Michaelis-Arbuzov-type reaction of 1-imidoalkyltriarylphosphonium salts with phosphites, phosphonites, and phosphinites was used in the synthesis of a wide range of phosphorus analogs of α-amino acids such as 1-imidoalkylphosphonates,
Jakub Adamek   +4 more
doaj   +1 more source

Nanomaterials with Excellent Adsorption Characteristics for Sample Pretreatment: A Review

open access: yesNanomaterials, 2022
Sample pretreatment in analytical chemistry is critical, and the selection of materials for sample pretreatment is a key factor for high enrichment ability, good practicality, and satisfactory recoveries. In this review, the recent progress of the sample
Wen-Xin Liu   +5 more
doaj   +1 more source

Ti‐Doping Activates Adjacent Zr Sites in Bimetallic MOFs for Cooperative Phospholipid Removals in Human Biomonitoring

open access: yesAdvanced Science, EarlyView.
Ti‐doped Zr/Ti bimetallic MOFs activate neighboring Zr sites to selectively capture phospholipids from serum through cooperative interactions. In nontargeted screening, the material minimizes matrix interference, expands detectable feature coverage, and enables broad recovery of diverse chemical hazards, providing a powerful cleanup strategy for LC ...
Yanmin Liang   +5 more
wiley   +1 more source

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