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Synergistic effect of zwitterion-modified cellulose nanocrystals and chitin nanofibrils on regulated composite membranes
Membranes organized by rigid cellulose nanocrystals (CNCs), the highly crystalline nano-objects, exhibit a wide range of potential applications...
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Lactonization of dyes promoted by a coordination cage facilitates cavity-induced chromism as ion mobile detector
Dye molecules often change colors (so-called “chromism”) according to the environment variation. However, they are rarely induced by a catalytic...
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“Zwitterionic Phospholide Derivatives—New Ambiphilic Ligands”
Attachment of one or two phosphonio substituents converts a phospholide anion not only into a zwitterion or cation but induces as well a...
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Comparison of kinetic and thermodynamic parameters of reaction of individual conformers of α-substituted β-ethoxyvinyl trifluoromethyl ketones with secondary amines
The kinetic and thermodynamic parameters of the reaction of three most possible conformers (viz . E-s-E-s-E- trans, E-s-Z-s-E- trans, and E-s-Z-s-E- gosh)...
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Complexes of Ionized Dipeptides of Glycyl-L-Glutamic Acid and Alanyl-L-Tyrosine with Nucleic Bases of the Pyrimidine Series
AbstractThe quantum chemical simulation of complexes of the glycyl-L-glutamic acid anion and the - alanyl-L-tyrosine Ala-L-Tyr zwitterion with...
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Synthetic zwitterions as efficient non-permeable cryoprotectants
Cryopreservation of cells is necessary for long periods of storage. However, some cell lines cannot be efficiently cryopreserved, even when optimized...
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Synthesis, characterization and stability of phosphonium phenolate zwitterions derived from a (diphenylphosphino)phenol derivative and oxiranes
Phosphonium phenolate zwitterions have been synthesized from 2,4-di- tert -butyl-6-(diphenylphosphino)phenol and five different oxirane derivatives....
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Group-assisted purification chemistry principles to access highly substituted zwitterionic furans via fast, concise, and efficient one-pot three-component assembly
Novel highly substituted zwitterionic furans were generated through the in situ formation of phosphonium salts. Firstly, intermediate salts were...
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Donor-acceptor bicyclopropyl configuration-fixed by an additional trimethylene bridge: synthesis and Lewis acid-catalyzed tandem three-membered rings opening
A diastereoselective synthesis of donor-acceptor bicyclopropyl, 8-phenyldispiro[2.3.2.0]-nonane-1,1-dicarboxylate, was carried out, which treated...
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Pathways of reactions of 2-arylcyclopropane-1,1-dicarboxylates with monosubstituted cycloheptatrienes under the action of GaCl3
The reaction of 2-arylcyclopropane-1,1-dicarboxylates (ACDCs) with the unsaturated cyclohepta-2,4,6-triene-1-carboxylate system under the action of...
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Synchronous and Zwitterionic Channels of the Reaction of (R)-5-Methyl-2-(propan-2-ylidene)cyclohexanone with 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione
AbstractThe reaction of pulegone with 4-phenyl-3 H -1,2,4-triazole-3,5(4 H )-dione as enophile gives two known epimers, 1-[(1 R ,4 R )-4-methyl-2-oxo-1-(prop...
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Intra-Solid and Inter-Solid Reactions of Molecular Crystals: a Green Route to Crystal Engineering
The thesis developed in this chapter is that reactions taking place between molecular solids or within molecular solids, or involving a molecular...
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One Substrate with Two Different Binding Sites. Competitive Binding. Two Different Binding Species. Two Different Binding Substrates
In this chapter we willBindingcompetitive binding consider one substrate with two different binding sites, different binding species on the same...
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Tetrameric self-assembling of water-lean solvents enables carbamate anhydride-based CO2 capture chemistry
Carbon capture, utilization and storage is a key yet cost-intensive technology for the fight against climate change. Single-component water-lean...
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Recent Advances in Palladium-Catalyzed [4 + n] Cycloaddition of Lactones, Benzoxazinanones, Allylic Carbonates, and Vinyloxetanes
Palladium-catalyzed allylation cyclization reaction has recently emerged as an efficient and powerful synthetic platform for the construction of...
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Free carbenes from complementarily paired alkynes
Carbenes (R 1 R 2 C:) like radicals, arynes and nitrenes constitute an important family of neutral, high-energy, reactive intermediates—fleeting chemical...
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Recent Advances in Charge-Accelerated Aza-Claisen Rearrangements
Aza-Claisen rearrangements (3-aza-Cope rearrangements) have gained an increasing interest in synthetic organic chemistry. Originally, the...
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Three-Component Synthesis of New C3-Substituted 5,6-Dihydropyrrolo[2,1-a]isoquinolines
AbstractNew C 3 -substituted 5,6-dihydropyrrolo[2,1- a ]isoquinolines have been synthesized via three-component domino reaction of...
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Hydrogen Bonding Interactions Between Ions: A Powerful Tool in Molecular Crystal Engineering
Hydrogen bonding interactions are the strongest of the non-covalent interactions and are highly directional (hence transportable and reproducible)....
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Protolytic Equilibrium of Glycine and Glycylglycine: Structure of Ionic Forms and Solvent Effect on the Thermodynamic Parameters of Processes
AbstractQuantum-chemical calculations of the structure of the molecular forms of glycine and glycylglycine and conjugate ionic forms have been...
