Cu-Catalyzed C–H Alkenylation of Benzoic Acid and Acrylic Acid Derivatives with Vinyl Boronates

2020 ◽  
Vol 22 (12) ◽  
pp. 4692-4696
Author(s):  
Jian-Jun Li ◽  
Cheng-Gang Wang ◽  
Jin-Feng Yu ◽  
Peng Wang ◽  
Jin-Quan Yu
Keyword(s):  
Acrylic Acid ◽  
Benzoic Acid ◽  
Vinyl Boronates

Diels–Alder and Dehydration Reactions of Biomass-Derived Furan and Acrylic Acid for the Synthesis of Benzoic Acid

ACS Catalysis ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 6946-6955 ◽  
Author(s):  
Eyas Mahmoud ◽  
Jingye Yu ◽  
Raymond J. Gorte ◽  
Raul F. Lobo
Keyword(s):  
Acrylic Acid ◽  
Benzoic Acid ◽  
Diels Alder ◽  
Dehydration Reactions

Aliphatic diazo compounds. X. The reaction of α-diazoacetophenone with methanolic sodium methoxide

1977 ◽  
Vol 55 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Peter Yates ◽  
R. J. Mayfield
Keyword(s):  
Acrylic Acid ◽  
Benzoic Acid ◽  
Sodium Methoxide ◽  
Methyl Benzoate ◽  
Diazo Compounds ◽  
Dilute Solution ◽  
Cis And Trans

The reaction of α-diazoacetophenone (1) with methanolic sodium methoxide in dilute solution gives 3-benzoyl-5-hydroxy-4-phenylpyrazole (4), 3-benzoyl-4-hydroxy-5-phenyl-pyrazole (5), 3-benzoyl-5-methoxy-4-phenylpyrazole (9), 3-benzoyl-4-phenylpyrazole (6), 5-benzoyltetrazole (7), 3,6-dibenzoyldihydro-s-tetrazine (10), cis- and trans- β-benzoyl- α-phenyl-acrylic acid, acetophenone, methyl benzoate, and benzoic acid. The pyrazoles 4, 5, and 9 are considered to arise via reaction of 1 to give α-methoxyacetophenone followed by further reaction of the anion of the latter with 1. Evidence in accord with this view was obtained by a study of the products formed when 1 was treated with methanolic sodium methoxide in the presence of 2-methoxy-4′-methylacetophenone. Acetophenone is considered to arise by reduction of 1 via phenylglyoxal 2-monohydrazone (37); condensation of 1 with the enolate ion derived from acetophenone then can give the pyrazole 6, while condensation of 1 with 37 could give the tetrazole 7.

Probe of cadmium(II) binding on soil fulvic acid investigated by 113Cd NMR spectroscopy

1996 ◽  
Vol 74 (7) ◽  
pp. 1360-1365 ◽  
Author(s):  
Kun H. Chung ◽  
Seog W. Rhee ◽  
Hyun S. Shin ◽  
Christopher H. Moon
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Acrylic Acid ◽  
Benzoic Acid ◽  
Fulvic Acid ◽  
Binding Sites ◽  
Chemical Shifts ◽  
Cadmium Concentration ◽  
Synthetic Polymers ◽  
Cadmium Complexes

Binding of cadmium(II) on soil fulvic acid (FA) was investigated over a range of fulvate-to-cadmium concentration ratios (8 – 59 equiv. mol−1) using 113Cd NMR spectroscopy. The 113Cd chemical shift of cadmium bound on fulvate was observed in a more downfield region (δ −20.4 to −15.6) than that bound on synthetic polymers, poly(acrylic acid) (PAA: δ −36.6 to −38.2), poly(methacrylic acid) (PMAA: δ −34.0 to −25.4), and poly(vinyl benzoic acid) (PVBA: δ −34.7 to −31.2). The calculated values of individual chemical shifts for the species CdL+ and CdL2 (L: carboxylate) formed in Cd(II)–carboxylate systems (e.g., acetate, benzoate) are δ −22 to −24 and δ −39 to −40, respectively. The relative downfield shift of cadmium(II)–fulvate suggests that functional groups (e.g., hydroxyl and neutral N donor) other than carboxylates may be involved in cadmium coordination. The chemical shifts of cadmium complexes of hydroxycarboxylates (e.g., glycolate) or carboxylates containing neutral N donor (e.g., picolinate) were generally observed in more downfield regions than their carboxylate counterparts. Key words: fulvic acid, polyfunctionality, binding sites, chemical shift, 113Cd NMR.

scholarly journals A formulation additive for simultaneously improving flue gas desulfurization efficiency and gypsum quality

2020 ◽  
pp. 42-42
Author(s):  
Lin Lv
Keyword(s):  
Citric Acid ◽  
Power Plant ◽  
Acrylic Acid ◽  
Moisture Content ◽  
Benzoic Acid ◽  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
So2 Removal ◽  
Coal Power ◽  
Desulfurization Efficiency

The effects of different additives including MgSO4, MnSO4, adipic acid, citric acid, benzoic acid, succinic acid and acrylic acid on SO2 removal from a limestone-gypsum wet flue gas desulfurization (FGD) system and gypsum characteristics were investigated. An optimized formulation additive for simultaneously improving flue gas desulfurization efficiency and gypsum quality was found out. This formulation additive was successfully applied in an industrial scale FGD system of a local coal-power plant (600 MW, Shanghai Wujing Power plant, China), and the gypsum quality was improved. The optimized formulation additive was acrylic acid, MnSO4 and citric acid mixed at a ratio of 1:1:2, which can simultaneously achieve an increased desulfurization efficiency of 97.02% and a low gypsum moisture content of 4.32%. Moreover, MnSO4 and acrylic acid were found to be most effective for improving SO2 removal, and citric acid contributed to gypsum particles with more uniform sizes and regular shapes, as well as good dewatering characteristics.

TEM characterization of proton-exchanged LiNbO3 optical waveguides

1986 ◽  
Vol 44 ◽  
pp. 480-481
Author(s):  
W. E. Lee
Keyword(s):  
Refractive Index ◽  
Benzoic Acid ◽  
Optical Waveguides ◽  
Total Internal Reflection ◽  
Index Of Refraction ◽  
Optical Measurements ◽  
Lithium Ions ◽  
Wide Channel ◽  
Tem Characterization

An optical waveguide consists of a several-micron wide channel with a slightly different index of refraction than the host substrate; light can be trapped in the channel by total internal reflection.Optical waveguides can be formed from single-crystal LiNbO3 using the proton exhange technique. In this technique, polished specimens are masked with polycrystal1ine chromium in such a way as to leave 3-13 μm wide channels. These are held in benzoic acid at 249°C for 5 minutes allowing protons to exchange for lithium ions within the channels causing an increase in the refractive index of the channel and creating the waveguide. Unfortunately, optical measurements often reveal a loss in waveguiding ability up to several weeks after exchange.

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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