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1,042 Newest Publications about the topic phosphoric acid

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Asymmetric Organocatalytic Synthesis of Chiral 3,3-Disubstituted Oxindoles via 1,6-Conjugate Addition Reaction

03-Jul-2018 | Abdul Rahman; Qiaoxia Zhou; Xufeng Lin, Organic & Biomolecular Chemistry, 2018

A highly efficient synthesis of chiral 3,3-disubstituted oxindoles was developed by using a chiral spirocyclic phosphoric acid catalyzed 1,6-conjugate addition reaction of para-quinone methoids derived from N-unprotected isatins with indoles. The reaction proceeds under mild reaction conditions ...

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From Glucose-Based Carbohydrates to Phenol-rich Bio-oil Integrated with Syngas Production via Catalytic Pyrolysis over Activated Carbon Catalyst

20-Jun-2018 | yayun zhang; Hanwu Lei; zixu yang; Dengle Duan; elmar villota; R Ruan, Green Chemistry, 2018

The catalytic pyrolysis of carbohydrates over phosphoric acid-activated carbon catalyst (ACC) was investigated to obtain phenol-rich bio-oil and syngas production in a facile fixed-bed reactor for the first time. A central composite experimental design (CCD) was used to optimize the reaction ...

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Materials, Vol. 11, Pages 916: Comparison of the Microtensile Bond Strength of a Polyetherketoneketone (PEKK) Tooth Post Cemented with Various Surface Treatments and Various Resin Cements

29-May-2018 | Song, Chan-Hong ; Choi, Jae-Won ; Jeon, Young-Chan ; Jeong, Chang-Mo ; Lee, So-Hyoun ; Kang, Eun-Sook ; Yun, Mi-Jung ..., Materials, 2018

Materials, Vol. 11, Pages 916: Comparison of the Microtensile Bond Strength of a Polyetherketoneketone (PEKK) Tooth Post Cemented with Various Surface Treatments and Various Resin Cements Materials doi: 10.3390/ma11060916 Authors: Chan-Hong Song Jae-Won Choi Young-Chan Jeon Chang-Mo ...

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Organocatalytic asymmetric synthesis of benzazepinoindole derivatives with trifluoromethylated quaternary stereocenters by chiral phosphoric acid catalysts

28-May-2018 | Abdul Rahman; En Xie; Xufeng Lin, Organic & Biomolecular Chemistry, 2018

An enantioselective aza-Friedel–Crafts reaction of trifluoromethyl dihydrobenzoazepinoindoles with pyrroles catalyzed by a chiral spirocyclic phosphoric acid was developed. This methodology provides a facile route to CF3- and pyrrole-containing benzazepinoindoles bearing quaternary stereocenters ...

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Minimizing the aggregation of diglycolamide reverse micelles in the n-dodecane phase with bis-(2-ethylhexyl)phosphoric acid “reactive” phase modifier

28-May-2018 | K. Rama Swami; R. Kumaresan; K. A. Venkatesan; M. P. Antony, New Journal of Chemistry, 2018

Phase modifiers have been added to the solvent phase to prevent the undesirable third phase formation during the course of solvent extraction. Bis(2-ethylhexyl)phosphoric acid (HDEHP) has been explored as a phase modifier during the extraction of Nd(iii) from nitric acid medium in a binary ...

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Minimizing the aggregation of diglycolamide reverse micelles in the n-dodecane phase with bis-(2-ethylhexyl)phosphoric acid “reactive” phase modifier

28-May-2018 | K. Rama Swami; R. Kumaresan; K. A. Venkatesan; M. P. Antony, New Journal of Chemistry, 2018

Phase modifiers have been added to the solvent phase to prevent the undesirable third phase formation during the course of solvent extraction. Bis(2-ethylhexyl)phosphoric acid (HDEHP) has been explored as a phase modifier during the extraction of Nd(iii) from nitric acid medium in a binary ...

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Chiral phosphoric acid catalysis: from numbers to insights

25-May-2018 | Rajat Maji; Sharath Chandra Mallojjala; Steven E. Wheeler, Chemical Society Reviews, 2018

Chiral phosphoric acids (CPAs) have emerged as powerful organocatalysts for asymmetric reactions, and applications of computational quantum chemistry have revealed important insights into the activity and selectivity of these catalysts. In this tutorial review, we provide an overview of ...

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Synthesis of coated solvent impregnated resins by PVA cross-linked with vapor-phase glutaraldehyde for adsorption of vanadium (IV)

20-May-2018 | Author(s): Shenxu Bao, Bo Chen, Yimin Zhang, Yongping Tang, Reactive and Functional Polymers, 2018

Publication date: Available online 30 April 2018 Source:Reactive and Functional Polymers Author(s): Shenxu Bao, Bo Chen, Yimin Zhang, Yongping Tang Coated solvent impregnated resins (CSIRs) were prepared by poly(vinyl alcohol) (PVA) cross-linked with vapor-phase glutaraldehyde (GA) ...

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Materials, Vol. 11, Pages 622: Factors Influencing NO2 Adsorption/Reduction on Microporous Activated Carbon: Porosity vs. Surface Chemistry

18-Apr-2018 | Ghouma, Imen ; Jeguirim, Mejdi ; Limousy, Lionel ; Bader, Najoua ; Ouederni, Abdelmottaleb ; Bennici, Simona, Materials, 2018

Materials, Vol. 11, Pages 622: Factors Influencing NO2 Adsorption/Reduction on Microporous Activated Carbon: Porosity vs. Surface Chemistry Materials doi: 10.3390/ma11040622 Authors: Imen Ghouma Mejdi Jeguirim Lionel Limousy Najoua Bader Abdelmottaleb Ouederni Simona ...

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Energies, Vol. 11, Pages 639: Comparison and Optimization of Saccharification Conditions of Alkaline Pre-Treated Triticale Straw for Acid and Enzymatic Hydrolysis Followed by Ethanol Fermentation

13-Mar-2018 | Łukajtis, Rafał ; Kucharska, Karolina ; Hołowacz, Iwona ; Rybarczyk, Piotr ; Wychodnik, Katarzyna ; Słupek, Edyta ; ..., Energies, 2018

Energies, Vol. 11, Pages 639: Comparison and Optimization of Saccharification Conditions of Alkaline Pre-Treated Triticale Straw for Acid and Enzymatic Hydrolysis Followed by Ethanol Fermentation Energies doi: 10.3390/en11030639 Authors: Rafał Łukajtis Karolina Kucharska Iwona ...

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