Results 151 to 160 of about 153,572 (317)

Active Transport of Macrocycles into Micelles Using Molecular Pumps

Angewandte Chemie, EarlyView.
Artificial molecular pumps attached to polymeric micelles were found capable of transporting charged macrocycles into the micelles. The pumps operate with only modestly reduced pumping efficiency as compared to nonmicellar counterparts, indicating that ring‐threading molecular pumps can transport charged solutes into supramolecular assemblies, akin to ...
James S. W. Seale, Swagat Sharma, Christopher K. Lee, Han Han, Tyler Jaynes, Eric W. Roth, Saman Shafie, Yunyan Qiu, Luke Malaisrie, Madison I. Bardot, Long Zhang, Yi‐Kang Xing, Dong Jun Kim, Samuel I. Stupp, R. Dean Astumian, Evan A. Scott, William R. Dichtel, J. Fraser Stoddart   +17 more
wiley   +2 more sources

A New Insight into the Molecular Mechanism of the Reaction between 2-Methoxyfuran and Ethyl (Z)-3-phenyl-2-nitroprop-2-enoate: An Molecular Electron Density Theory (MEDT) Computational Study

Molecules
The molecular mechanism of the reaction between 2-methoxyfuran and ethyl (Z)-3-phenyl-2-nitroprop-2-enoate was investigated using wb97xd/6-311+G(d,p)(PCM) quantum chemical calculations.
Mikołaj Sadowski, Ewa Dresler, Aneta Wróblewska, Radomir Jasiński   +3 more
doaj   +1 more source

Benzimidazole N-Oxides. IV. 1, 3-Dipolar Cycloaddition Reaction with 1-Methylbenzimidazole 3-Oxide

, 1964
Shirō Takahashi, Hideo Kanō
openalex   +2 more sources

The Reaction of 1-[o-Bromomethylphenyl]alkylidenemalonate, Cyanoacetate or Malononitrile with Azide Ion. Intramolecular 1,3-Dipolar Cycloaddition. [PDF]

, 1978
Per Kolsaker, Peter O. Ellingsen, Grete Wøien   +2 more
openalex   +1 more source

Synthesis of N‐Substituted 4‐Pyridones From Skipped Diynones via Intramolecular Base or Ag(I)‐Catalyzed Hydroamination

Asian Journal of Organic Chemistry, EarlyView.
A general protocol for the synthesis of N‐substituted 4‐pyridones from skipped diynones is presented via a base or Ag(I)‐catalyzed hydroamination pathway. Abstract Cs2CO3 or CF3COOAg catalyze the intramolecular 6‐endo hydroamination of the Z‐enaminones derived from the Michael‐type addition of primary amines to skipped diynones, yielding N‐substituted ...
Elisavet‐Maria Zantioti‐Chatzouda, Stavroula‐Aikaterini Kaplani, Eleni‐Maria Stroda, Nikolaos Eleftheriadis, Manolis Stratakis   +4 more
wiley   +1 more source

Computational Study of Ignored Pericyclic Reactions: Rearrangements of 1,2‐Bis(Diazo)Alkanes to 1,2,3,4‐Tetrazines and Subsequent Fragmentations

Angewandte Chemie, EarlyView.
DFT calculations of the 8π‐electrocyclization of 1,2‐bis(diazo)alkanes and of other bis‐1,3‐dipoles reveal that this process can establish a so far ignored route to heterocycles such as 1,2,3,4‐tetrazines. Alternative reaction channels via carbenes or nitrenes leading to fragmentation products are discussed.
Hans‐Ulrich Reissig, Ernst‐Ulrich Würthwein   +1 more
wiley   +2 more sources

Structural Dependence of Catenand Effect: Thermodynamic and Kinetic Modulation of Catenane Coordination Properties via Ring‐size and Exocyclic Substituent Variation

Angewandte Chemie, EarlyView.
By modifying ring size and exocyclic substituents, effects of ligand interlocking on metal coordination features is explored. Through systematic analysis of CuI catenanes, relationship between structural parameters of the interlocked ligands and coordination properties like geometry, stability, and reactivity is established.
Yulin Deng, Zi‐Gang Lu, Samuel Kin‐Man Lai, Man Pang Tang, Xiaoyong Mo, Shan He, David Lee Phillips, Edmund Chun Ming Tse, Ho Yu Au‐Yeung   +8 more
wiley   +2 more sources

Thermal 1, 3-Cycloaddition of Aromatic Hydroxamoyl Chlorides with Cyclic Olefins

, 1969
Tadashi Sasaki, Toshiyuki Yoshioka, Yasuyuki Suzuki   +2 more
openalex   +2 more sources

Vollständig sensibilisierte Upconversion‐Nanopartikel als effiziente Katalysatoren für NIR‐gesteuerte UV‐Photochemie

Angewandte Chemie, EarlyView.
Die speziell konzipierten NaYbF4:Tm3+@NaYF4‐Nanopartikel mit einem voll sensibilisierten Yb3+‐Gitter und einer optimierten Kern‐Hülle‐Architektur wandeln fünf 980 nm Photonen durch sequenzielle Absorption in ein einziges 345 nm Ultraviolett (UV) Photon um.
Naomi Weitzel, Armaz Tsutskiridze, Julia Bramowski, Burkhard König, Thomas Hirsch   +4 more
wiley   +1 more source

Synthesis and Application of Bioactive N‐Functionalized Aziridines

Angewandte Chemie, EarlyView.
This review discusses modern synthetic methods for the preparation of aziridine‐containing small molecules, including biocatalytic, electrocatalytic, and photocatalytic strategies. We highlight the compatibility of various synthetic methods with control of the exocyclic N‐substituent.
Hao Tan, Samya Samanta, Nan Qiu, Alexander Adibekian, David C. Powers   +4 more
wiley   +2 more sources