Results 51 to 60 of about 6,415 (151)

A Mechanochemical Route for the Synthesis of Diphenyleneiodonium Salts and the Estimation of Their Relative Solid‐State Reactivities

Chemistry–Methods, Volume 5, Issue 9, September 2025.
An efficient mechanochemical route for diphenyleneiodonium (DPI) salt synthesis is reported which offers a sustainable and solvent‐free alternative. The solid‐state reactivities of the reported DPI salts were also assessed with the help of morphology predictions and Hirshfeld surface analysis computations to understand the effect of crystal morphology,
Ipsha Shruti, Tejender S. Thakur
wiley   +1 more source

Modulating Antimicrobial Activity and Structure of the Peptide Esc(1‐21) via Site‐Specific Isopeptide Bond Formation

Journal of Peptide Science, Volume 31, Issue 9, September 2025.
The introduction of an isopeptide bond at the lysine residues in the backbone of Esc(1‐21) led to the generation of five analogs. Among these, Esc(1‐21)ε20 showed the most promising features, having antimicrobial activity comparable with those of the parent peptide, a lower cytotoxicity, and a higher stability to proteolytic degradation.
Bruno Casciaro, Daniel Ben Hur, Daniela Roversi, Carlo Vetrano, Edo Kiper, Giacomo Cappella, Federico Carneri, Eeva Tortellini, Lorenzo Stella, Neta Regev‐Rudzki, Yechiel Shai, Maria Luisa Mangoni   +11 more
wiley   +1 more source

Hydrazones as Singular Reagents in Asymmetric Organocatalysis [PDF]

, 2016
This Minireview summarizes strategies and developments regarding the use of hydrazones as reagents in asymmetric organocatalysis, their distinct roles in nucleophile–electrophile, cycloaddition, and cyclization reactions.
Fernández Fernández, Rosario Fátima, Lassaletta, José M., Matador Martínez, Esteban, Monge Fernández, David, Retamosa Hernández, María Gracia   +4 more
core   +1 more source

Proton Chemical Shifts in Some Benzhydryl Compounds. [PDF]

Acta Chemica Scandinavica, 1970
Leiv J. Stangeland, Jon Songstad, Torsten Nilsson, Kurt Torssell, S. E. Rasmussen, Erling Sunde, Nils Andreas Sørensen   +6 more
openaire   +1 more source

Knüpfung von CC-Bindungen durch Addition von Carbenium-Ionen an Alkene. Kinetik und Mechanismus [PDF]

, 1990
Die Addition von Carbenium-Ionen an CC-Doppelbindungen, ein Schlüsselschritt zahlreicher Synthesen in der Organischen und Makromolekularen Chemie, wird am Beispiel der Lewis-Säure-induzierten Umsetzungen von Alkylchloriden mit Alkenen mechanistisch ...
Allen, Arnett, Bartl, Bartl, Bartlett, Becker, Benson, Bhattacharyya, Bäuml, Bäuml, Chwang, Chwang, Collin, Conrow, Curtin, Dau-Schmidt, De la Mare, Deno, Deno, Dewar, Dorfman, Eberson, Eberson, Exner, Freeman, Genusov, Genusov, Grob, Grob, Groß, Hammett, Hostalka, Irrgang, Jencks, Johnson, Kirmse, Klein, Knittel, Kochi, Marcuzzi, Marcuzzi, Matyjaszewski, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, McClelland, Musigmann, Nishida, Nowlan, Olah, Olah, Olah, Petrov, Pock, Pock, Pock, Pock, Pross, Pross, Reichardt, Ritchie, Ritchie, Ritchie, Roberts, Rolston, Rolston, Ruasse, Ruasse, Saunders, Schade, Schade, Schade, Schade, Schinzer, Schmerling, Schmerling, Schmid, Schneider, Schneider, Schneider, Schubert, Schweig, Seeman, Shubin, Smid, Stetter, Streitwieser, Streitwieser, Szwarc, Turner, Vogel, von der Brüggen, Wang   +103 more
core   +1 more source

Cationic gold(I) heteroleptic complexes bearing a pyrazole-derived N-heterocyclic carbene: syntheses, characterizations, and cytotoxic activities [PDF]

, 2013
10.1039/c3dt51071aDalton Transactions423412421 ...
Huynh, Han Vinh, Sivaram, Haresh, Tan, Jackie   +2 more
core   +1 more source

Kinetic and Thermodynamic Studies of Carbenium Ion Additions Towards Alkenes [PDF]

, 1988
The ionisation (Ar2CHCl + BC13 v=± Ar2CH+BCi;) and dissociation (Ar2CH+BCi; ^=*Ar2CH+ + BCl^) equilibria of diarylmethyl chlorides i n boron trichloride/ dichloromethane solution have been studied by conductimetry, photometry and *H NMR spectroscopy ...
Arnett, Bader, Collins, Denison, Deno, Grattan, Kennedy, Mayr, Mayr, Mayr, Mayr, Mayr, Mayr, O'Brien, Pock, Reed, Schneider, Schneider, Schneider, Smid, Szwarc   +20 more
core   +1 more source

Comparison of the Nucleophilicities of Alkynes and Alkenes. Quantitative Determination of the Nucleophilicities of Alkynes toward Carbenium Ions [PDF]

, 1994
Relative reactivities of alkenes and alkynes toward diarylmethyl cations have been determined by direct rate measurements and by competition experiments in dichloromethane.
Gonzalez, Jose L., Lüdtke, Kerstin, Mayr, Herbert   +2 more
core   +1 more source

Biphenyl-Derived Phosphepines as Chiral Nucleophilic Catalysts: Enantioselective [4+1] Annulations To Form Functionalized Cyclopentenes [PDF]

, 2014
Because of the frequent occurrence of cyclopentane subunits in bioactive compounds, the development of efficient catalytic asymmetric methods for their synthesis is an important objective.
Fu, Gregory C., Fujiwara, Yuji, Ikeda, Takuya, Riesgo, Lorena, Ziegler, Daniel T.   +4 more
core   +2 more sources

A DFT study of the reactivity indexes of ionic [4 + 2+] Diels-Alder cycloaddition to nitrilium and immonium ions [PDF]

, 2011
The global electrophilicity index, defined within the conceptual density functional theory (DFT), was used to classify the dienes and dienophiles currently used in Diels-Alder reactions on a unique scale of electrophilicity.
Andres, Juan, Castillo, Raquel
core   +1 more source