Results 71 to 80 of about 72,922 (314)

Empirical method for predicting the enthalpy changes of combustion of amides [PDF]

Journal of the Serbian Chemical Society, 2019
The enthalpy change of combustion is one of the basic thermochemical characteristics of an organic compound, indicating the amount of heat produced in the complete combustion of the substance.
Ryskaliyeva Alma K., Baltabayev Murat E., Abaeva Kurmankul T.   +2 more
doaj   +1 more source

Ir-Catalyzed Chemodivergent Allenylic Alkylation of Vinyl Az-ides: Highly Enantioselective Synthesis of α-Allenylic Amides and Ketones

, 2021
Enantioselective allenylic alkylation reactions of unstabilized enolates have never been reported. We now present a unified fragment-coupling strategy for the first enantioselective synthesis of α-allenylic amides and ketones through allenyl-ic ...
Aditya, Chakrabarty, Santanu, Mukherjee
core   +1 more source

Polymer Interface Enables Reversible Quasi‐Solid Sulfur Conversion in Sodium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
The polymer interface enables a stable quasi‐solid sulfur conversion pathway in room‐temperature Na─S batteries. The coating regulates Na+ transport, stabilizes the cathode–electrolyte interphase, and accommodates mechanical stress, suppressing electrolyte decomposition and sulfur migration, thereby improving reaction uniformity, reducing polarization,
Reza Andaveh, Ying Zhao, Enzhong Jin, Zixin Zhang, Vinicius Martins, Parham Pirayesh, Yi Gan, Yi Yuan, Yijia Wang, Frederick Benjamin Holness, Changhong Cao, Jun Song, Yang Zhao   +12 more
wiley   +1 more source

General Direct Transformation of Secondary Amides to Ketones via Amide Activation

, 2012
Carbon-carbon bond formation and functional group transformation are two cornerstones of organic synthesis. Generally, most of the established methods involve the transformation of a more reactive molecule to a more stable one, while the inverse ...
Xiao, Kaijiong, Huang, Peiqiang, 黄培强, Huang, Yinghong   +3 more
core   +1 more source

Tuning Separator Chemistry: Improving Zn Anode Compatibility via Functionalized Chitin Nanofibers

Advanced Functional Materials, EarlyView.
Nanochitin derived from waste shrimp shells is used to fabricate separators for aqueous zinc batteries. By tuning the density of amine and carboxylic surface groups, water mobility at the separator interface is controlled, promoting uniform zinc deposition, suppressing dendrite growth, and enabling exceptional cycling stability exceeding 2000 h ...
Ibrahim Al Kathemi, Vishnu Arumughan, Mohamed Zbiri, Marcel Kröger, Ira Smal, Eero Kontturi, Roza Bouchal   +6 more
wiley   +1 more source

Synthesis of alpha-Amino Amides via N,O-Acetals Derived from Weinreb Amides

, 2009
An easy and straightforward synthesis of alpha-amino amides via a base-mediated rearrangement of modified Weinreb amides into N,O-acetals is presented.
Somfai, Peter,, Hirner, Sebastian,
core   +1 more source

Graded‐Interface Dual‐Environment Hydrogel‐Polymer Electrolyte for Stabilized Anode and Sustained Cathode Kinetics in Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
A graded‐interface hydrogel‐polymer electrolyte decouples water activity to simultaneously stabilize the Zn anode and sustain cathode kinetics. The flexible design supports dendrite‐free cycling over 1600 h, high capacity in both MnO2 and V2O5 full cells, and stable pouch‐cell performance under bending, resolving the fundamental water conflict in ...
Shuyun Wang, Shengmei Chen, Xinyu Wang, Haipeng Wang, Jinsong Zhou, Ka Kiu Keith Cheung, Yiran Ying, Longtao Ma, Juan Antonio Zapien   +8 more
wiley   +1 more source

Self-assembling cannabinomimetics: supramolecular structures of N-alkyl amides

, 2007
Certain fatty acid N-alkyl amides from the medicinal plant Echinacea activate cannabinoid type-2 (CB2) receptors. In this study we show that the CB2-binding Echinacea constituents dodeca-2E,4E-dienoic acid isobutylamide (1) and dodeca-2E,4E,8Z,10Z ...
Gertsch, Jürg, Raduner, Stefan, Bisson, William, Altmann, Karl-Heinz, Abagyan, Ruben   +4 more
core   +1 more source

Metabolism of amino acid amides in Pseudomonas putida ATCC 12633 [PDF]

, 1993
The metabolism of the natural amino acid L-valine, the unnatural amino acids D-valine, and D-, L-phenylglycine (D-, L-PG), and the unnatural amino acid amides D-, L-phenylglycine amide (D, L-PG-NH2) and L-valine amide (L-Val-NH2) was studied in ...
Hermes, H.F.M.,, Croes, L.M.,, Peters, P.J.H.,, Peters, P.J.H., Dijkhuizen, L.,, Dijkhuizen, L., Peeters, W.P.H., Dijkhuizen, L.; id_orcid, Peeters, W.P.H.,, Hermes, H.F.M., Croes, L.M.   +10 more
core   +1 more source

Anion‐Exchange‐Enabled Hydrogel Electrolytes With High Zn2+ Transference for Dendrite‐Free Flexible Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
A high‐Zn2+‐transference hydrogel electrolyte of ex‐PDADAM is developed via anion exchange at quaternary ammonium sites, achieving high Zn2+ transference number (0.86), ionic conductivity (8.10 mS cm−1), and toughness (51.25 MJ m−3). Symmetric cells are operated stably for over 2000 h, while flexible pouch cells retain 90.9% capacity after 300 cycles ...
Jung Woo Hong, Yeon Su Kim, Zuyang Hu, Hyungyu Cho, Gun Jang, Minjun Hwang, Hye Rin Park, Jun Su Kim, Ho Seok Park   +8 more
wiley   +1 more source