Category: 971-66-4

Morin, Marie S. T. published the artcileCopper-Catalyzed Petasis-Type Reaction: A General Route to α-Substituted Amides From Imines, Acid Chlorides, and Organoboron Reagents, Quality Control of 971-66-4, the publication is Journal of Organic Chemistry (2012), 77(4), 2013-2017, database is CAplus and MEDLINE.

A copper-catalyzed Petasis-type reaction of imines, acid chlorides, and organoboranes to form α-substituted amides is described. This reaction does not require the use of activated imines or the transfer of special units from the organoboranes and represent a useful generalization of the Petasis reaction.

Journal of Organic Chemistry published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Quality Control of 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Figueiredo, Joana published the artcileHazard of novel anti-fouling nanomaterials and biocides DCOIT and silver to marine organisms, SDS of cas: 971-66-4, the publication is Environmental Science: Nano (2020), 7(6), 1670-1680, database is CAplus.

Biocide-based coatings have been applied for several years to tackle marine biofouling. Recently, engineered nanomaterials, such as silica mesoporous nanocapsules (SiNCs), were used to encapsulate DCOIT, an anti-fouling booster biocide, and Ag, a broad-spectrum bactericidal agent, in order to control their release with time. This study aims to assess the environmental hazard of three novel anti-fouling nanomaterials (SiNC-DCOIT, SiNC-Ag and SiNC-DCOIT-Ag) and their free counterparts (DCOIT, Ag and SiNCs) to marine ecosystems. In order to accomplish this goal, marine toxicity data (L/E/IC₅₀ or NOEC) were compiled to derive PNEC values for each compound based on statistical and deterministic approaches. The first approach relies on the hazardous concentration for 5% of the species (HC₅ using species sensitivity distribution curves) and the second relies on the lowest L/E/IC₅₀ or NOEC value, considering the appropriate assessment factors. In both approaches, PNEC values were lower for the encapsulated biocides than for their free forms. Thus, biocide encapsulation appears to be a promising solution to develop a new generation of efficient anti-fouling additives for maritime coatings with lower environmental hazard than the current state-of-the-art biocides.

Environmental Science: Nano published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, SDS of cas: 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Wolf, William J. published the artcileExamining the Effects of Monomer and Catalyst Structure on the Mechanism of Ruthenium-Catalyzed Ring-Opening Metathesis Polymerization, Product Details of C23H20BN, the publication is Journal of the American Chemical Society (2019), 141(44), 17796-17808, database is CAplus and MEDLINE.

The mechanism of Ru-catalyzed ring-opening metathesis polymerization (ROMP) is studied in detail using a pair of third generation ruthenium catalysts with varying sterics of the N-heterocyclic carbene (NHC) ligand. Exptl. evidence for polymer chelation to the Ru center is presented in support of a monomer-dependent mechanism for polymerization of norbornene monomers using these fast-initiating catalysts. A series of kinetic experiments, including rate measurements for ROMP, rate measurements for initiation, monomer-dependent kinetic isotope effects, and activation parameters were useful for distinguishing chelating and nonchelating monomers and determining the effect of chelation on the polymerization mechanism. The formation of a chelated metallacycle is enforced by both the steric bulk of the NHC and by the geometry of the monomer, leading to a ground-state stabilization that slows the rate of polymerization and also alters the reactivity of the propagating Ru center toward different monomers in copolymerizations The results presented here add to the body of mechanistic work for olefin metathesis and may inform the continued design of catalysts for ROMP to access new polymer architectures and materials.

Journal of the American Chemical Society published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C9H10O4, Product Details of C23H20BN.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Li, Yakun published the artcileSuper-structural 2D ultrathin carbon nitride/acrylate boron silane polymer with multi-function for enhancing antifouling performance, Recommanded Product: Triphenyl(pyridin-1-ium-1-yl)borate, the publication is Journal of Coatings Technology and Research (2021), 18(4), 1051-1064, database is CAplus.

Haunted by marine biofouling and the ecol. crisis caused by toxic antifouling paints, the demand for environmental coatings has become more and more pressing. In this work, a series of super-structural 2D ultrathin carbon nitride/acrylate boron silane polymers (CNPs) was prepared by incorporating C₃N₄ into a self-polishing acrylate boron silane polymer (ABSP). The antifouling, environmental performances were evaluated, and the antifouling mechanism was investigated. The results showed that when the content of C₃N₄ was 3-7 wt%, the coatings showed the best resistance to diatoms, Staphylococcus aureus and Escherichia coli in visible light. It was noted that the coatings showed weak antibacterial properties in the dark. In addition, the CNPs and ABSP were shown to expel mussels by photocatalytic active species, self-renewal and amphiphilic surfaces. The COD (COD) values showed that the addition of C₃N₄ made the CNPs become environmental coatings.

Journal of Coatings Technology and Research published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Recommanded Product: Triphenyl(pyridin-1-ium-1-yl)borate.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Zhang, Zixu published the artcilePhotocatalytic antifouling coating based on carbon nitride with dynamic acrylate boron fluorinated polymers, Product Details of C23H20BN, the publication is New Journal of Chemistry (2021), 45(2), 780-787, database is CAplus.

Based on the situation of marine biofouling and the ecol. crisis caused by toxic antifouling paints, a series of environmental carbon nitride (C₃N₄) nanocomposite films (CNPs) were prepared by incorporating C₃N₄ into a self-polishing acrylate boron fluorinated polymer (ABFP). The antifouling performance was evaluated by the diatom anti-attachment test, photocatalytic antibacterial measurements and a mussel settlement assay. The results showed that the optimal content of C₃N₄ to inhibit the adhesion of diatoms was 3-7 wt%, the antibacterial rate of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) reached 98.10% and 96.94% in the presence of 7 wt% C₃N₄ under irradiation with visible light for 90 min. In addition, the CNPs and ABFP showed an ability to expel mussels. As a synergistic effect, the self-renewable polymer surfaces could also strip the attached fouling organisms without light. The undifferentiated growth rates between the CNPs and blank proved the environmental properties of the prepared films. The COD values showed that the addition of C₃N₄ contributed to the eco-friendly properties of the CNPs.

New Journal of Chemistry published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C7H11N, Product Details of C23H20BN.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Gragg, B. R. published the artcileA carbon-13 NMR study on some phenylborane derivatives, SDS of cas: 971-66-4, the publication is Journal of Organometallic Chemistry (1977), 132(1), 29-36, database is CAplus.

The intensity of 13C NMR signals of C atoms bonded to B can frequently be increased by recording the spectra at low temperatures Though this procedure results in a loss of fine structure, it enables the determination of chem. shift data for NMR signals that are either broad or unobservable at ambient temperature High temperature recording of spectra seems to be a useful technique for resolving multiplet resonance signals that are collapsed in ambient temperature spectra. 13C NMR data are reported for a variety of phenylborane derivatives; no simple correlation seems to exist between δ13C of the phenyl C atom bonded to B and δ11B of the phenylborane species.

Journal of Organometallic Chemistry published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, SDS of cas: 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Oishi, Michio published the artcileEffect of L-cysteine on α-amylase production and nucleic acid metabolism in Bacillus subtilis, Product Details of C23H20BN, the publication is Journal of General and Applied Microbiology (1963), 9(3), 337-41, database is CAplus.

In B. subtilis, 10^-4M L-cysteine caused an almost complete inhibition of adenine incorporation into ribo- and DNAs and 2 × 10^-5M amounts suppressed α-amylase production to 80-90% of the controls. The latter inhibition was reversed by unidentified compounds in yeast extract

Journal of General and Applied Microbiology published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Product Details of C23H20BN.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Okamura, H. published the artcileEcotoxicity of the degradation products of triphenylborane pyridine (TPBP) antifouling agent, Category: pyridine-derivatives, the publication is Chemosphere (2009), 74(9), 1275-1278, database is CAplus and MEDLINE.

Triphenylborane pyridine (TPBP) is an alternative to organotin antifouling compounds This work aimed to identify the unknown Peak #1, and to evaluate the ecotoxicity of TPBP and its degradation products. Peak #1 was produced from TPBP dissolved in acetonitrile under UV-A photolysis using a high-pressure Hg lamp. The Peak #1 fraction was purified using 2-step column chromatog. from a TPBP-acetonitrile solution The major compound of the fraction was identified as being biphenyl from the ¹H NMR and ¹³C NMR spectra. The ecotoxicity of 4 degradation products (diphenylborane hydroxide, phenylborane dihydroxide, phenol, and biphenyl) and TPBP towards 2 marine planktons were assessed. The 48 h LC₅₀ values of the crustacean, Artemia salina, were 0.13 mg L^-1 for TPBP, 14 mg L^-1 for biphenyl, 17 mg L^-1 for phenol, and >50 mg L^-1 for the other degradation products. The 72 h EC₅₀ values of the diatom, Skeletonema costatum, were 0.0022 mg L^-1 for TPBP, 1.2 mg L^-1 for biphenyl, and >2 mg L^-1 for the other degradation products. Thus, the ecotoxicity of biphenyl and the other degradation products were not high compared to the parent compound, TPBP.

Chemosphere published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Category: pyridine-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Chen, Jinghu published the artcileFacile synthesis of highly porous hyper-cross-linked polymer for light hydrocarbon separation, HPLC of Formula: 971-66-4, the publication is Polymer Engineering & Science (2021), 61(3), 662-668, database is CAplus.

Light hydrocarbon separation is a crucial process associated with high energy expenditure in the petrochem. industry. The utilization of porous organic materials as solid porous adsorbents for light hydrocarbon separation has found widespread attention because of the advantages of low cost, excellent stability, and good recyclability. Here, we present the facile synthesis of a porous organic material, constructed from pyridine-triphenylborane by using a Friedel-Crafts alkylation coupling reaction, affording the hyper-crosslinked polymer, HCP-B. HCP-B features significant thermal stability, and high surface area. Gas adsorption experiments show that this material adsorbs much larger amounts of ethane, ethylene, and acetylene than that of methane. Ideal adsorbed solution theory (IAST) calculations also predict that HCP-B selectively adsorbs ethane, ethylene, and acetylene over methane. Both are indicative of the great potential of HCP-B in light hydrocarbon separation

Polymer Engineering & Science published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, HPLC of Formula: 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Ishida, Naoki published the artcileSynthesis of Pyridine-N-oxide-Borane Intramolecular Complexes by Palladium-Catalyzed Reaction of 2-Bromopyridine-N-oxides with Alkynyltriarylborates, Application In Synthesis of 971-66-4, the publication is Organic Letters (2011), 13(12), 3008-3011, database is CAplus and MEDLINE.

Pyridine-N-oxide-borane intramol. complexes, e.g., I, having an aza-stilbene π-framework were synthesized by the Pd-catalyzed coupling reactions of 2-bromopyridine-N-oxides with alkynyltriarylborates. E.g., reaction of 2-bromo-5-methoxypyridine-N-oxide and HN(ⁱPr)₂ in toluene at room temperature with [Me₄N][HCCBPh₃] in the presence of [PdCl(π-allyl)]₂/DPEPhos catalyst to give I in 79% yield.

Organic Letters published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Application In Synthesis of 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem