Formation of an imidosuccinimide by cyclisation of a sterically hindered β-cyanoester with the lithium salt of a primary amine

2000 ◽  
Vol 2000 (3) ◽  
pp. 124-125 ◽  
Author(s):  
Francisco Ros
Keyword(s):  
Primary Amine ◽  
Room Temperature ◽  
Lithium Salt ◽  
Sterically Hindered ◽  
Fold Excess

The reaction of β-cyanoester 1 with a two-fold excess of the lithium salt of homoveratrylamine in THF at 0 °C to room temperature affords the imidosuccinimide 3, which undergoes derivation to the succinimide monooxime 4 by treatment with m-chloroperoxybenzoic acid.

Crystal Structure and Reversible O2-Binding of a Room Temperature Stable μ-η2:η2-Peroxodicopper(II) Complex of a Sterically Hindered Hexapyridine Dinucleating Ligand

1999 ◽  
Vol 121 (47) ◽  
pp. 11006-11007 ◽  
Author(s):  
Masahito Kodera ◽  
Kou Katayama ◽  
Yoshimitsu Tachi ◽  
Koji Kano ◽  
Shun Hirota ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Room Temperature ◽  
Sterically Hindered ◽  
O2 Binding

scholarly journals Contribution Succinonitrile additive for Performa LiTFSi Solid Polymer Electrolytes for Li-Ion Battery

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Qolby Sabrina ◽  
Titik Lestariningsih ◽  
Christin Rina Ratri ◽  
Achmad Subhan
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Lithium Salt ◽  
Ionic Conduction ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Half Cell ◽  
Li Ion

Solid polymer electrolyte (SPE) appropriate to solve packaging leakage and expansion volume in lithium-ion battery systems. Evaluation of electrochemical performance of SPE consisted of mixture lithium salt, solid plasticizer, and polymer precursor with different ratio. Impedance spectroscopy was used to investigate ionic conduction and dielectric response lithium bis(trifluoromethane)sulfony imide (LiTFSI) salt, and additive succinonitrile (SCN) plasticizer. The result showing enhanced high ionic conductivity. In half-cell configurations, wide electrochemical stability window of the SPE has been tested. Have stability window at room temperature, indicating great potential of SPE for application in lithium ion batteries. Additive SCN contribute to forming pores that make it easier for the li ion to move from the anode to the cathode and vice versa for better perform SPE. Pore of SPE has been charaterization with FE-SEM. Additive 5% w.t SCN shows the best ionic conductivity with 4.2 volt wide stability window and pretty much invisible pores.

The effect of steric hindrance on the SRN1 reaction of some α-Alkyl-p-nitrobenzyl chlorides

1976 ◽  
Vol 29 (12) ◽  
pp. 2621 ◽  
Author(s):  
RK Norris ◽  
D Randles
Keyword(s):  
Oxygen Atom ◽  
Steric Hindrance ◽  
Lithium Salt ◽  
Dimethyl Sulphoxide ◽  
Sterically Hindered ◽  
Srn1 Reaction

The reactions of a series of α-substituted p-nitrobenzyl chlorides, p- NO2C6H4CH(Cl)R (R = Me, Et, Prt, But), with the lithium salt of 2- nitropropane in dimethyl sulphoxide and dimethylformamide have been studied. When R = Me or Et, competing SRN1 and SN2 processes take place, giving C- and O-alkylated products respectively. In the more sterically hindered cases where R = Pri or But, the only reaction taking place has been shown to be an SRN1 reaction with exclusive O-alkylation. These observations indicate that the SRN1 reaction is prone to steric hindrance, and that radical alkylation of the ambident nitronate ion occurs on the more accessible oxygen atom in sterically hindered situations.

A 1,2,3-triazolate lithium salt with ionic liquid properties at room temperature

2018 ◽  
Vol 54 (65) ◽  
pp. 9035-9038 ◽  
Author(s):  
D. Flachard ◽  
J. Rolland ◽  
M. M. Obadia ◽  
A. Serghei ◽  
R. Bouchet ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Lithium Salt ◽  
Triethylene Glycol

A triethylene glycol-based 1,2,3-triazolate lithium salt with ionic liquid properties at room temperature is synthesized in three steps including copper-catalysed cycloaddition between alkyne-functionalized monomethoxy-triethylene glycol and azidomethyl pivalate, followed by the deprotection of the methyl pivalate group and further lithiation of the 1H-1,2,3-triazole intermediate.

scholarly journals Organocatalytic Asymmetric Conjugate Addition of Aldehydes to Maleimides and Nitroalkenes in Deep Eutectic Solvents

Molecules ◽  
2019 ◽  
Vol 24 (22) ◽  
pp. 4058 ◽  
Author(s):  
Alejandro Torregrosa-Chinillach ◽  
Alba Sánchez-Laó ◽  
Elisa Santagostino ◽  
Rafael Chinchilla
Keyword(s):  
Primary Amine ◽  
Room Temperature ◽  
Deep Eutectic Solvents ◽  
Conjugate Addition ◽  
Reaction Media

A chiral primary amine-salicylamide is used as an organocatalyst for the enantioselective conjugate addition of α,α-disubstituted aldehydes to maleimides and nitroalkenes. The reactions are performed in deep eutectic solvents as reaction media at room temperature, leading to the corresponding adducts with enantioselectivities up to 88% (for maleimides) and 80% (for nitroalkenes). Catalyst and solvent can be recovered and reused.

Polymer-in-salt solid electrolytes for lithium-ion batteries

2019 ◽  
Vol 12 (06) ◽  
pp. 1930006 ◽  
Author(s):  
Chengjun Yi ◽  
Wenyi Liu ◽  
Linpo Li ◽  
Haoyang Dong ◽  
Jinping Liu
Keyword(s):  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Smart Grids ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Lithium Salt ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Polymer Lithium Ion Batteries

Solid-state polymer lithium-ion batteries with better safety and higher energy density are one of the most promising batteries, which are expected to power future electric vehicles and smart grids. However, the low ionic conductivity at room temperature of solid polymer electrolytes (SPEs) decelerates the entry of such batteries into the market. Creating polymer-in-salt solid electrolytes (PISSEs) where the lithium salt contents exceed 50[Formula: see text]wt.% is a viable technology to enhance ionic conductivity at room temperature of SPEs, which is also suitable for scalable production. In this review, we first clarify the structure and ionic conductivity mechanism of PISSEs by analyzing the interactions between lithium salt and polymer matrix. Then, the recent advances on polyacrylonitrile (PAN)-based PISSEs and polycarbonate derivative-based PISSEs will be reviewed. Finally, we propose possible directions and opportunities to accelerate the commercializing of PISSEs for solid polymer Li-ion batteries.

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