ChemInform Abstract: Facile Ring-Closure Cyclization of Arenes by Nucleophilic C-Alkylation Reaction in Ionic Liquid.

ChemInform ◽  
2010 ◽  
Vol 41 (15) ◽  
Author(s):  
Dong Jin Hong ◽  
Dong Wook Kim ◽  
Dae Yoon Chi
Keyword(s):  
Ionic Liquid ◽  
Ring Closure ◽  
Alkylation Reaction

Facile ring-closure cyclization of arenes by nucleophilic C-alkylation reaction in ionic liquid

2010 ◽  
Vol 51 (1) ◽  
pp. 54-56 ◽  
Author(s):  
Dong Jin Hong ◽  
Dong Wook Kim ◽  
Dae Yoon Chi
Keyword(s):  
Ionic Liquid ◽  
Ring Closure ◽  
Alkylation Reaction

CO2 adsorption and catalytic application of imidazole ionic liquid functionalized porous organic polymers

2017 ◽  
Vol 8 (11) ◽  
pp. 1833-1839 ◽  
Author(s):  
Shuang Hao ◽  
Yuchuan Liu ◽  
Chuning Shang ◽  
Zhiqiang Liang ◽  
Jihong Yu
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Co2 Adsorption ◽  
Benzimidazole Derivatives ◽  
Alkylation Reaction ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Catalytic Application

A class of imidazole ionic liquid functionalized porous organic polymers has been synthesized by the Friedel–Crafts alkylation reaction. The resulting materials show high CO2 uptake and catalytic activity in the syntheses of benzimidazole derivatives.

scholarly journals Synthesis of 1,2,3-Triazolium Ionic Liquid-Supported Chiral Imidazolidinones and Their Application in Asymmetric Alkylation Reaction

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3349 ◽  
Author(s):  
Yunkyung Jeong ◽  
Yunjeong Park ◽  
Jae-Sang Ryu
Keyword(s):  
Ionic Liquid ◽  
Alkylation Reaction ◽  
Chiral Auxiliaries ◽  
Asymmetric Alkylation ◽  
Simple Extraction ◽  
Cleavage Reactions ◽  
Excellent Chemical

New 1,2,3-triazolium ionic liquid-supported chiral imidazolidinones were developed. The feasibility of the ionic liquid-supported imidazolidinones as chiral auxiliaries was demonstrated in sequential propionylation-alkylation-cleavage reactions, which provided the chiral product with good to excellent chemical yields (up to 90%) and high selectivities (up to 94% ee). The progress of the reactions could be monitored by TLC and NMR, and the ionic liquid-supported chiral auxiliaries could be recovered by simple extraction.

Green and Efficient Protocol for the Synthesis ofN-(2-Hydroxyethyl)anilines by the Alkylation Reaction in Ionic Liquid

2014 ◽  
Vol 44 (23) ◽  
pp. 3368-3374 ◽  
Author(s):  
Hui Guo ◽  
Yuwei Zhuang ◽  
Jian Cao ◽  
Guobao Zhang
Keyword(s):  
Ionic Liquid ◽  
Alkylation Reaction

scholarly journals COSMO-RS Aided Kinetic Studies of Alkylation Reaction in Liquid-Liquid Biphasic Reaction Using Acidic Ionic Liquid Catalyst

2008 ◽  
Vol 80 (9) ◽  
pp. 1253-1253
Author(s):  
J. Joni ◽  
D. Schmitt ◽  
P. S. Schulz ◽  
T. J. Lotz ◽  
P. Wasserscheid
Keyword(s):  
Ionic Liquid ◽  
Kinetic Studies ◽  
Alkylation Reaction ◽  
Acidic Ionic Liquid ◽  
Biphasic Reaction

Folding strain stereocontrol in cyclohexane ring formation by means of an intramolecular ester enolate alkylation reaction

1996 ◽  
Vol 74 (12) ◽  
pp. 2487-2502 ◽  
Author(s):  
Takashi Tokoroyama ◽  
Hisashi Kusaka
Keyword(s):  
Stereoselective Synthesis ◽  
High Selectivity ◽  
Ring Closure ◽  
Alkylation Reaction ◽  
Qualitative Comparison ◽  
Enolate Alkylation ◽  
Leaving Group ◽  
Counter Cation ◽  
Ester Enolate ◽  
C Nmr

Diastereoselectivity in the cyclization of ethyl 7-bromo-2-methylheptanoates with an additional substituent at various positions in the chain, by LDA treatment, was investigated in connection with the concept of folding strain stereocontrol. Cyclization of 3-, 4-, and 6-methyl-substituted substrates revealed high selectivity, which demonstrates the prevalence of folding strain stereocontrol and the usefulness of this approach for stereoselective ring construction. In particular, reactions of the latter two substrates resulted in the stereodivergent preparation of diastereomeric 1,3-dimethylcyclohexanecarboxylates. In the case of the 5-mefhyl-substituted substrate, the selectivity of ring closure was only moderate. 1H and 13C NMR spectroscopic data were useful for determining the conformation of 1 -methylcyclohexanecarboxylate derivatives. The origin of the diastereoselectivity was examined through the qualitative comparison of the strain in the diastereomeric folding in the transition state. Various factors that might affect stereoselectivity were examined in the cyclization of 5-substituted substrates to better understand this concept. As predicted, the selectivity increased as the substituent became bulkier: Ph < Me ≈ Et < i-Pr < t-Bu. The effects of other factors — solvent, base counter cation, and leaving group — on selectivity agree with results predicted from the reactivity–selectivity relationship. Key words: folding strain stereocontrol; diastereoselectivity in ring-closure reaction; remote asymmetric induction; ethyl 2-methylcyclohexanecarboxylate derivatives, 1H and 13C NMR; stereoselective synthesis of substituted cyclohexane derivatives.

Single-step synthesis of novel chloroaluminate ionic liquid for green Friedel–Crafts alkylation reaction

2019 ◽  
Vol 22 (1) ◽  
pp. 59-71 ◽  
Author(s):  
Mangesh Sakhalkar ◽  
Pavankumar Aduri ◽  
Sharad Lande ◽  
Sudeshna Chandra
Keyword(s):  
Ionic Liquid ◽  
Single Step ◽  
Alkylation Reaction

scholarly journals Ionic Liquid-promoted Ring-closure Reactions between 1,4-Dihydroxyanthraquinone and Diamines

Molecules ◽  
2006 ◽  
Vol 11 (6) ◽  
pp. 464-468 ◽  
Author(s):  
Zhang-Gao Le ◽  
Zong-Bo Xie ◽  
Min Ying
Keyword(s):  
Ionic Liquid ◽  
Ring Closure

Soft ionic liquid based resistive memory characteristics in a two terminal discrete polydimethylsiloxane cylindrical microchannel

2020 ◽  
Vol 8 (38) ◽  
pp. 13368-13374
Author(s):  
Muhammad Umair Khan ◽  
Gul Hassan ◽  
Jinho Bae
Keyword(s):  
Ionic Liquid ◽  
Acrylic Acid ◽  
Sodium Hydroxide ◽  
Sodium Salt ◽  
Resistive Memory ◽  
Cylindrical Microchannel ◽  
Memory Characteristics ◽  
Poly Acrylic Acid

This paper proposes a novel soft ionic liquid (IL) electrically functional device that displays resistive memory characteristics using poly(acrylic acid) partial sodium salt (PAA-Na+:H2O) solution gel and sodium hydroxide (NaOH) in a thin polydimethylsiloxane (PDMS) cylindrical microchannel.

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