Results 21 to 30 of about 15,069 (303)

One-Pot Phosphonylation of Heteroaromatic Lithium Reagents: The Scope and Limitations of Its Use for the Synthesis of Heteroaromatic Phosphonates

Molecules, 2023
A one-pot lithiation–phosphonylation procedure was elaborated as a method to prepare heteroaromatic phosphonic acids. It relied on the direct lithiation of heteroaromatics followed by phosphonylation with diethyl chlorophosphite and then oxidation with ...
Ewa Chmielewska, Natalia Miodowska, Błażej Dziuk, Mateusz Psurski, Paweł Kafarski   +4 more
doaj   +1 more source

Alkenes from β-lithiooxyphosphonium ylides generated by trapping α-lithiated terminal epoxides with triphenylphosphine

Beilstein Journal of Organic Chemistry, 2012
Terminal epoxides undergo lithium 2,2,6,6-tetramethylpiperidide-induced α-lithiation and subsequent interception with Ph3P to provide a new and direct entry to β-lithiooxyphosphonium ylides.
David. M. Hodgson, Rosanne S. D. Persaud
doaj   +1 more source

Unravelling Factors Affecting Directed Lithiation of Acylamino­aromatics [PDF]

, 2018
Ureas, pivalamides, and carbamates are widely used as directing metalation groups (DMGs) due to their good directing ability, low cost, ease of access, and ease of removal.
Mohammed Alshammari, El-Hiti, Gamal, Alshammari, Mohammed, Keith Smith, Gamal El-Hiti, Smith, Keith   +5 more
core   +1 more source

Synthesis of 8-Fluoro-3,4-dihydroisoquinoline and Its Transformation to 1,8-Disubstituted Tetrahydroisoquinolines

Molecules, 2018
A simple procedure for the synthesis of 8-fluoro-3,4-dihydroisoquinoline is described below, based on a directed ortho-lithiation reaction. This key intermediate was then applied in various transformations.
Csilla Hargitai, Tamás Nagy, Judit Halász, Gyula Simig, Balázs Volk   +4 more
doaj   +1 more source

An atomistic perspective on lithiation kinetics and morphological evolution in void-involved silicon/carbon nanohybrid

Materials & Design, 2020
Void-involved silicon (Si)/carbon (C) nanohybrid has been considered as a promising anode material for the lithium ion batteries (LIBs). However, further optimizing the design and improving the performance of the void-involved Si/C electrodes still ...
Chen Feng, Junjie Li, Siyi Cheng, Maoyuan Li, Chen Chen, Guanglan Liao, Tielin Shi, Zirong Tang   +7 more
doaj   +1 more source

Regioselective Synthesis of 4-Bromo-3-formyl-N-phenyl-5-propylthiophene-2-carboxamide

Molbank, 2021
We synthesized 4-bromo-3-formyl-N-phenyl-5-propylthiophene-2-carboxamide by using three successive direct lithiations and a bromination reaction starting from thiophene.
Sukanta Bar, Maxwell Israel Martin
doaj   +1 more source

Dimerization of Lithiated Terminal Aziridines

Synfacts, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hodgson, David M., Miles, Steven M.
openaire   +3 more sources

Lithiation-Induced Non-Noble Metal Nanoparticles for Li–O₂ Batteries

, 2018
Low-cost and highly active electrocatalysts are attractive for Li–O2 applications. Herein, a 3D interconnected plate architecture consisting of ultrasmall Co–Ni grains embedded in lithium hydroxide nanoplates (Co2Ni@LiOH) is designed and prepared by a ...
Xiaoqiao Zeng (3627977), Zhengfei Dai, Khalil Amine (1329924), Tianpin Wu, Zhengfei Dai (1746004), Xuanxuan Bi, Lu Ma (46360), Yuanyuan Guo (50344), Yifei Yuan, Jun Lu, Lu Ma, Qingyu Yan (109352), Xuanxuan Bi (1721551), Xiaoqiao Zeng, Jun Lu (36049), Khalil Amine, Yifei Yuan (1423336), Yuanyuan Guo, Tianpin Wu (1440610), Qingyu Yan   +19 more
core   +1 more source

α,β-Aziridinylphosphonates by lithium amide-induced phosphonyl migration from nitrogen to carbon in terminal aziridines

Beilstein Journal of Organic Chemistry, 2010
N-Phosphonate terminal aziridines undergo lithium 2,2,6,6-tetramethylpiperidide-induced N- to C-[1,2]-anionic phosphonyl group migration under experimentally straightforward conditions, to provide a stereocontrolled access to synthetically valuable trans-
David. M. Hodgson, Zhaoqing Xu
doaj   +1 more source

A simple model for diffusion-induced dislocations during the lithiation of crystalline materials

Theoretical and Applied Mechanics Letters, 2014
Assuming that the lithiation reaction occurs randomly in individual small particles in the vicinity of the reaction front, a simple model of diffusion-induced dislocations was developed.
Fuqian Yang
doaj   +1 more source