Results 121 to 130 of about 55,314 (289)

EPC synthesis of tropane alkaloids via enantioselective deprotonation [PDF]

, 1996
This dissertation deals with the application of enantiotopic group selective reactions to the synthesis of enantiomerically pure compounds (EPC). Deprotonation of tropinone with optically pure, chiral lithium amides was studied.
Lazny, Ryszard
core  

Reconstruction of Ultrafine MnS‐Induced Vacancy‐Rich Co9S6.29 Precatalysts in Mesoporous S‐Doped N‐Rich Hollow Carbon Nanotubes Enables Dynamic O‐Vacancy Cycling for High‐Performance Zn‐Air Batteries

Advanced Science, EarlyView.
We develop vacancy‐rich Co9S6.29 precatalysts formed via ultrafine MnS‐induced lattice distortion in mesoporous S‐doped N‐rich hollow carbon nanotubes (CM@SNHCTs). This CM@SNHCT precatalyst is reconstructed into catalytically‐active cathode phases that enable efficient oxygen reduction/evolution reactions (ORR/OER) through dynamic O‐vacancy formation ...
Debarani Devi Khumujam, Saleem Sidra, Ram Babu Ghising, Dong Won Kim, Jong Hui Choi, Gwanho Lee, Benzhi Wang, Hyung Mo Jeong, Sang‐Il Choi, Do Hwan Kim, Jeung Ku Kang   +10 more
wiley   +1 more source

Mechanistic studies of leaving group effects on enzymatic catalysis by methylglyoxal synthase [PDF]

, 2004
This thesis describes the investigations of leaving group effects on enzymatic catalysis by Methylyoxal synthase (MGS). MGS is a glycolytic enzyme involved m bacterial metabolism which catalyzes the irreversible elimination of dihydroxyacetone phosphate (
Dodd, Barry J.
core  

The reaction scheme of the deprotonation and methyltransfer. [PDF]

The reaction scheme of the deprotonation and methyltransfer.
Philipp Kaldis (3122793), Li Na Zhao (1575169)   +1 more
core   +1 more source

ZrO2 Aerogel‐Supported Pd Nanoparticles for Photothermal CO2 Reduction

Advanced Science, EarlyView.
Nanoparticle‐based aerogels are promising catalysts for photothermal reactions due to optical transparency, high surface area, and low thermal conductivity. Here, we present deposition of Pd nanoparticles on ZrO2 aerogel granules by a wet‐impregnation approach.
David Kiwic, Linard Räz, Elena Tervoort, Markus Niederberger   +3 more
wiley   +1 more source

DFT-simulated Mg2+ and Ca2+-containing silicates, aluminates and aluminosilicates along with their deprotonation and dimerization reactions in solution

Computational Materials Today
Geopolymer is considered as green, sustainable and supplementary cementitious binder synthesized by reaction of solid aluminosilicate precursor with monoacidic alkaline activators (NaOH/Na2SiO3 or KOH/ K2SiO3).
Rajesh Patidar, Hariom Gupta, Apurva Rahangdale, Varuni Jain   +3 more
doaj   +1 more source

Coupled Electronic and Ionic Conductivity in Strain‐Stiffening Hydrogels

Advanced Science, EarlyView.
A soft PVA–PABA hydrogel is developed that couples tissue‐like strain‐stiffening mechanics with dual ionic–electronic conduction. Dynamic boronic crosslinks enable self‐assembled percolative pathways, producing deformation‐responsive resistance with a stabilization plateau at stiffening onset, revealing alignment‐assisted charge transport and advancing
Md Al Raihan, Mark M. A. Mikhail, Khaled M. Hijazi, Hessameddin Yaghoobi, John P. Frampton, Vahid Adibnia, Michael S. Freund   +6 more
wiley   +1 more source

1H-Indoles from Deoxybenzoin Schiff Bases by Deprotonation—S_NAr Cyclization

Molecules
A transition metal-free synthesis of 1,2,5-trisubstituted 1H-indoles by a deprotonation–SNAr cyclization sequence from 1-aryl-2-(2-fluoro-5-nitrophenyl)ethan-1-one (deoxy-benzoin) Schiff bases is reported.
Nash E. Nevels, Richard A. Bunce
doaj   +1 more source

Thermoelectric PANI/TeNWs Fiber Based Microsensor for Passive Temperature and Active Chemical Sensing

Advanced Science, EarlyView.
Continuous wet‐spinning of PANI with TeNWs yields a multifunctional microfiber. Oriented TeNWs impose chain alignment and enhance π‐electron delocalization, boosting the Seebeck coefficient to 59.9 µV K−1 for passive temperature sensing (1 K detection limit), while achieving high pH sensitivity (59.25 mV pH−1) and rapid NH3 response (0.96 s).
Dongmei Xie, Mengran Chen, Xuefei Zhang, Yan Xu, Weiye Geng, Zhe Tang, Si‐ze Lou, Shun Wan, Zhenguo Liu, Heng Liu, Peng‐an Zong   +10 more
wiley   +1 more source

Time-resolved spectroscopy uncovers deprotonation-induced reconstruction in oxygen-evolution NiFe-based (oxy)hydroxides

Nature Communications
Transition-metal layered double hydroxides are widely utilized as electrocatalysts for the oxygen evolution reaction (OER), undergoing dynamic transformation into active oxyhydroxides during electrochemical operation.
Dan Wu, Longfei Hu, Xiaokang Liu, Tong Liu, Xiangyu Zhu, Qiquan Luo, Huijuan Zhang, Linlin Cao, Jinlong Yang, Zheng Jiang, Tao Yao   +10 more
doaj   +1 more source