ChemInform Abstract: Tandem gem-Dichlorination and Nitrile Oxide Generation from Chlorochromene Aldoximes: Synthesis of a New Class of Room Temperature Fluxional 4-Chromanone Derivatives.

AbstractRoom-temperature ionic liquids (RTILs) are a moderately new class of liquid substances that are characterized by a great variety of possible anion-cation combinations giving each of them different properties. For this reason, they have been termed as designer solvents and, as such, they are particularly promising for liquid-liquid extraction, which has been quite intensely studied over the last decade. This paper concentrates on the recent liquid-liquid extraction studies involving ionic liquids, yet focusing strictly on the separation of n-butanol from model aqueous solutions. Such research is undertaken mainly with the intention of facilitating biological butanol production, which is usually carried out through the ABE fermentation process. So far, various sorts of RTILs have been tested for this purpose while mostly ternary liquid-liquid systems have been investigated. The industrial design of liquid-liquid extraction requires prior knowledge of the state of thermodynamic equilibrium and its relation to the process parameters. Such knowledge can be obtained by performing a series of extraction experiments and employing a certain mathematical model to approximate the equilibrium. There are at least a few models available but this paper concentrates primarily on the NRTL equation, which has proven to be one of the most accurate tools for correlating experimental equilibrium data. Thus, all the presented studies have been selected based on the accepted modeling method. The reader is also shown how the NRTL equation can be used to model liquid-liquid systems containing more than three components as it has been the authors’ recent area of expertise.

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Stereoselective synthesis of glycosides using (salen)Co catalysts as promoters

Chemical Communications ◽

10.1039/c5cc02552d ◽

2015 ◽

Vol 51 (43) ◽

pp. 8939-8941 ◽

Cited By ~ 20

Author(s):

Sandra Medina ◽

Alexander S. Henderson ◽

John F. Bower ◽

M. Carmen Galan

Keyword(s):

Room Temperature ◽

Stereoselective Synthesis ◽

Co Catalysts ◽

New Class ◽

Stereoselective Glycosylation ◽

Glycosyl Donors

The use of (salen)Co catalysts as a new class of bench-stable stereoselective glycosylation promoters of trichloroacetimidate glycosyl donors at room temperature is described.

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Low-temperature transport properties of n-type layered homologous compounds Bi8−xSbxSe7

Journal of Materials Chemistry C ◽

10.1039/d0tc03935g ◽

2020 ◽

Vol 8 (40) ◽

pp. 14037-14048

Author(s):

Pavan Kumar-Ventrapati ◽

Shantanu Misra ◽

Gaëlle Delaizir ◽

Anne Dauscher ◽

Bertrand Lenoir ◽

...

Keyword(s):

Low Temperature ◽

Transport Properties ◽

Thermoelectric Materials ◽

Room Temperature ◽

Parent Compound ◽

New Class ◽

Highly Efficient ◽

Homologous Compounds

The n-type chalcogenide Bi8Se7 is the parent compound of a new class of highly-efficient thermoelectric materials for near-room-temperature thermoelectric applications.

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A room-temperature ferroelectric semimetal

Science Advances ◽

10.1126/sciadv.aax5080 ◽

2019 ◽

Vol 5 (7) ◽

pp. eaax5080 ◽

Cited By ~ 21

Author(s):

Pankaj Sharma ◽

Fei-Xiang Xiang ◽

Ding-Fu Shao ◽

Dawei Zhang ◽

Evgeny Y. Tsymbal ◽

...

Keyword(s):

First Principles ◽

Electrical Transport ◽

Room Temperature ◽

Electric Polarization ◽

First Principles Calculations ◽

New Class ◽

Weyl Semimetal ◽

Ferroelectric Domain Structure ◽

Ferroelectric Domains ◽

Crystalline Metal

Coexistence of reversible polar distortions and metallicity leading to a ferroelectric metal, first suggested by Anderson and Blount in 1965, has so far remained elusive. Electrically switchable intrinsic electric polarization, together with the direct observation of ferroelectric domains, has not yet been realized in a bulk crystalline metal, although incomplete screening by mobile conduction charges should, in principle, be possible. Here, we provide evidence that native metallicity and ferroelectricity coexist in bulk crystalline van der Waals WTe2by means of electrical transport, nanoscale piezoresponse measurements, and first-principles calculations. We show that, despite being a Weyl semimetal, WTe2has switchable spontaneous polarization and a natural ferroelectric domain structure at room temperature. This new class of materials has tantalizing potential for functional nanoelectronics applications.

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Polyphenyl polysulfide: a new polymer cathode material for Li–S batteries

Chemical Communications ◽

10.1039/c9cc01495k ◽

2019 ◽

Vol 55 (33) ◽

pp. 4857-4860 ◽

Cited By ~ 12

Author(s):

Pengfei Sang ◽

Yubing Si ◽

Yongzhu Fu

Keyword(s):

Cathode Material ◽

Carbon Disulfide ◽

Room Temperature ◽

Molar Ratios ◽

New Class ◽

Condensation Reactions

We report a new class of polyphenyl polysulfides synthesized by condensation reactions between 4,4′-thiobisbenzenethiol (TBBT) and sulfur with four different molar ratios in a toluene/carbon disulfide mixture at room temperature.

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A New Class of Room-Temperature Multiferroic Thin Films with Bismuth-Based Supercell Structure

Advanced Materials ◽

10.1002/adma.201203051 ◽

2012 ◽

Vol 25 (7) ◽

pp. 1028-1032 ◽

Cited By ~ 57

Author(s):

Aiping Chen ◽

Honghui Zhou ◽

Zhenxing Bi ◽

Yuanyuan Zhu ◽

Zhiping Luo ◽

...

Keyword(s):

Thin Films ◽

Room Temperature ◽

New Class

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Microwave induced synthesis of new class of pyrano isoxazoline and isoxazole annulated chromones - an intramolecular nitrile oxide cycloaddition with tethered olefins and alkynes

ARKIVOC ◽

10.24820/ark.5550190.p011.235 ◽

2020 ◽

Vol 2020 (8) ◽

pp. 125-135

Author(s):

Jayaprakash Rao Yerrabelly ◽

Shyam Prasad Nuligonda ◽

Sudhakar Mokenapelli ◽

Prasad Rao Chitneni

Keyword(s):

Nitrile Oxide ◽

New Class

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ChemInform Abstract: A New Class of Room Temperature Luminescent Organometallic Complexes: Luminescence and Photophysical Properties of Permethylscandocene Chloride in Fluid Solution.

ChemInform ◽

10.1002/chin.199011237 ◽

1990 ◽

Vol 21 (11) ◽

Author(s):

B. W. PFENNIG ◽

M. E. THOMPSON ◽

A. B. BOCARSLY

Keyword(s):

Room Temperature ◽

Photophysical Properties ◽

Organometallic Complexes ◽

Fluid Solution ◽

New Class

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Potent Biological investigation of new class of sulfone derivatives endowed with quinolinyl-cyclopropane analogue

10.21203/rs.3.rs-221411/v1 ◽

2021 ◽

Author(s):

Janki J Patel ◽

Mayur I. Morja ◽

Prakashsingh M. Chauhan ◽

Kishor H. Chikhalia

Keyword(s):

Room Temperature ◽

Energy Gap ◽

Weak Acid ◽

Biological Investigation ◽

New Class ◽

Antibacterial And Antifungal Activities ◽

Bacteria And Fungi ◽

Antibacterial And Antifungal ◽

Homo Lumo ◽

Sulfone Derivatives

Abstract Novel series of quinoline derivatives incorporating cyclopropyl ring and sulfone linkage as substituents were synthesized, Oxidation of ethyl-2-cyclopropyl-4-(substituted phenylthio) quinoline-3-carboxylate 10a-n was carried out to set ethyl-2-cyclopropyl-4(substituted phenyl sulfonyl) quinoline-3-carboxylate 11a-n. Sulfone derivatives were afforded by reaction of glacial acetic acid and 30% hydrogen peroxide at room temperature. An eco-friendly synthesis of sulfone derivatives were afforded by using weak acid at room temperature. The synthesized quinoline incorporating sulfone linkage derivatives were evaluated for their expected antimicrobial activity; where the majority of these compounds showed potent antibacterial and antifungal activities against the tested strains of bacteria and fungi. All the final synthesized derivatives were characterized by their melting point, mass spectra, IR, 1H NMR and 13C NMR spectras. SAR and HOMO-LUMO studies were also carried out for proving the structural biological activity. Among them compounds 11a, 11b, 11h, 11k and 11m gave best results as their energy gap is very low which makes their activity higher.

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