Catalysis-chemistry

Mohammadzadeh, Safoora published the artcileThe electrochemical behavior of 4-nitrobenzyl bromide and its catalytic activity for reduction of CO₂ in the acetonitrile solvent at the Cu/Pd/rGO/GCE surface, Computed Properties of 104-03-0, the publication is Electrochimica Acta (2020), 136483, database is CAplus.

4-Nitrobenzyl bromide was used as a catalyst for reduction of CO₂ and as an initial substrate for electrosynthesis of 4-nitrophenylacetic acid. Cu nanoparticles/Pd nanoparticles/reduced graphene oxide nanocomposite modified glassy C electrode (Cu/Pd/rGO/GCE) was used to promote electroactivation of CO₂. rGO film was fabricated via electrochem. reduction of dispersed GO nanosheets on the GCE surface. Cyclic voltammetry procedure was applied in two steps to deposit Pd and Cu nanoparticles on the rGO/GCE surface. The morphol. and structure of the nanocomposites were characterized using FESEM, EDS, AFM and XRD anal. FTIR, ¹H and ¹³C NMR spectral characteristics were used to identify the final products of the catalytic process. The electrocarboxylation of 4-nitrobenzyl bromide occurs at a potential which is less neg. than those reported for other aryl halides. 4-Nitrobenzyl bromide, as a catalyst, plays a dual role in the electrosynthesis of 4-nitrophenylacetate. The dual role includes the electrocatalytic reduction of CO₂ and reaction of produced CO^?-₂ with 4-nitrobenzyl bromide radical anion. Finally, an EC’C mechanism is proposed for the electrosynthesis of 4-nitrophenylacetate.

Electrochimica Acta published new progress about 104-03-0. 104-03-0 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Carboxylic acid,Benzene, name is 4-Nitrophenylacetic acid, and the molecular formula is C8H7NO4, Computed Properties of 104-03-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sharghi, Hashem published the artcileEfficient synthesis of some novel macrocyclic diamides using fast addition method, Category: catalysis-chemistry, the publication is Synthesis (2006), 999-1004, database is CAplus.

Synthesis of some new macrocyclic diamides based on catechol scaffold (I; X = (CH₂)₃, (CH₂)₆, CH₂CH₂NHCH₂CH₂, naphthalene-1,8-diyl, 3-nitro-1,2-phenylene, 3-methoxycarbonyl-1,2-phenylene, 3-pentyloxycarbonyl-1,2-phenylene, 3-octyloxycarbonyl-1,2-phenylene) and (II; X =3-methoxycarbonyl-1,2-phenylene, 3-pentyloxycarbonyl-1,2-phenylene, 3-octyloxycarbonyl-1,2-phenylene) by cyclization reactions between various diamines, i.e. 1,3-propanediamine, 1,6-hexanediamine, 3-aza-1,5-pentanediamine, 3-nitro-1,2-benzenediamine, Et 3,4-diaminobenzoate, pentyl 3,4-diaminobenzoate, or octyl; 3,4-diaminobenzoate, and 2-[2-(2-chloro-2-oxoethoxy)phenoxy]ethanoyl chloride using fast addition method has been described. The reactions were carried out in short reaction times and the expected macrocycles were obtained in good to high yields.

Synthesis published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C14H22O2, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Alizadeh, N. published the artcileSpectroscopic studies of charge-transfer complexation of iodine with a new benzo-substituted macrocyclic diamide in chloroform, dichloromethane and their 1:1 mixture, Application In Synthesis of 5411-14-3, the publication is Journal of the Iranian Chemical Society (2008), 5(4), 610-616, database is CAplus.

Charge-transfer complexation of iodine with a new benzo-substituted macrocyclic diamide 5,6,7,8,9,10-hexahydro-2H-1,13,4,7,10-benzodioxatriazacyclopentadecine-3,11(4H,12H)-dione (L) with iodine was studied spectrophotometrically in chloroform, dichloromethane and their 1:1 (volume/volume) mixture The observed time dependence of the charge-transfer band and subsequent formation of I₃^– ion are related to the slow formation of the initially formed 1:1 L.I₂ outer complex to an inner electron donor-acceptor (EDA) complex, followed by fast reaction of the inner complex with iodine to form a triiodide ion, as follows:. L + I₂ ¡ú L.I₂ (outer complex), fast. L.I₂ (outer complex) ¡ú (L.I⁺)I^– (inner complex), slow. (L.I⁺)I^– (inner complex) + I₂ ¡ú (L.I⁺)I₃^–, fast. The pseudo-first-order rate constants for the transformation process were evaluated in different solvent systems. The stability constants of the resulting EDAr complexes were also evaluated and the solvent effect on their stability is discussed. The resulting complexes were isolated and characterized by FTIR and ¹H NMR spectroscopy.

Journal of the Iranian Chemical Society published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Application In Synthesis of 5411-14-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Esmaeilzadeh, Pouriya published the artcileSelective Fabrication of Robust and Multifunctional Super Nonwetting Surfaces by Diverse Modifications of Zirconia-Ceria Nanocomposites, Category: catalysis-chemistry, the publication is Langmuir (2022), 38(30), 9195-9209, database is CAplus and MEDLINE.

The creation of surfaces with various super nonwetting properties is an ongoing challenge. We report diverse modifications of novel synthesized zirconia-ceria nanocomposites by different low surface energy agents to fabricate nanofluids capable of regulating surface wettability of mineral substrates to achieve selective superhydrophobic, superoleophobic-superhydrophilic, and superamphiphobic conditions. Surfaces treated with these nanofluids offer self-cleaning properties and effortless rolling-off behavior with sliding angles ¡Ü7¡ã for several liquids with surface tensions between 26 and 72.1 mN/m. The superamphiphobic nanofluid coating imparts nonstick properties to a solid surface whereby liquid drops can be effortlessly displaced on the coating with a near-zero tilt and conveniently lifted off using a needle tip, leaving no trace. Further, the superamphiphobic surface demonstrates good oil repellency toward ultralow surface tension liquids such as n-hexane and n-heptane. The superoleophobic-superhydrophilic surface repels oil droplets well regardless of whether it is in the air or underwater conditions. In addition, reaping the benefits of the ZrO₂-CeO₂ nanocomposites¡ä photocatalysis feature, the superoleophobic-superhydrophilic coating exhibits self-cleaning ability by the degradation of color dyes. Modification of the wettability of substrates is carried out by a cost-effective and facile solution-immersion approach, which creates surfaces with hierarchical nano-submicron-scaled structures. The multipurpose coated surfaces have outstanding durability and mech. stability. They also resist well high-temperature-high-pressure conditions, which will provide various practical applications in different fields, including the condensate banking removal in gas reservoirs or the separation of oil/water mixtures

Langmuir published new progress about 13822-56-5. 13822-56-5 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is 3-(Trimethoxysilyl)propan-1-amine, and the molecular formula is C6H17NO3Si, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Longo, Beatrice published the artcileDesign, synthesis, conjugation and reactivity of novel trans,trans-1,5-cyclooctadiene-derived bioorthogonal linkers, Application In Synthesis of 1466420-02-9, the publication is Bioconjugate Chemistry (2020), 31(9), 2201-2210, database is CAplus and MEDLINE.

The tetrazine/trans cyclooctene (TCO) inverse-electron-demand Diels-Alder (IEDDA) reaction is the fastest bioorthogonal ”click” ligation process reported to date. In this context, TCO reagents have found widespread applications, however their availability and structural diversity is still somewhat limited, due to challenges connected with their synthesis and structural modification. To address this issue, a novel strategy for the conjugation of TCO derivatives to a biomol. was developed, which allows for the creation of greater structural diversity from a single precursor mol., i.e. trans,trans-1,5-cyclooctadiene [(E,E)-COD], whose preparation requires standard laboratory equipment and readily available reagents. This two-step strategy relies on the use of new bifunctional TCO-linkers (3aSR,9aSR,E)-I (R = 2-[(2,5-dioxopyrrolidin-1-yl)oxy]-2-oxoethyl, 2-[2-(2-(2-[(4-nitrophenoxycarbonyl)oxy]ethoxy)ethoxy)ethoxy]ethyl, (4-([(2,5-dioxopyrrolidin-1-yl)oxy]carbonyl)phenyl)methyl, etc.) for IEDDA reactions, which can be synthesized via 1,3-dipolar cycloaddition of (E,E)-COD with different azido-spacers RN₃ carrying an electrophilic function (NHS-ester, N-succinimidyl carbonate, p-nitrophenyl-carbonate, maleimide) in the ¦Ø-position. Following bioconjugation of these electrophilic linkers to the nucleophilic residue (cysteine or lysine) of a protein (step 1), the resulting TCO-decorated constructs can be subjected to a IEDDA reaction with tetrazines functionalized with fluorescent or near IR (NIR) tags (step 2). This strategy to label bovine serum albumin with the TCO-linker (3aSR,9aSR,E)-I (II, R = 14-[(2,5-dioxopyrrolidin-1-yl)oxy]-14-oxo-3,6,9,12-tetraoxatetradecan-1-yl) and to subsequently react it in a cell lysate with the fluorescein-isothiocyanate (FITC)-derived tetrazine II was successfully used. The same strategy was then used to label the bacterial wall of gram-pos. S. aureus showing the potential of these linkers for live-cell imaging. Finally, the impact of structural differences of the linkers upon the stability of the bioorthogonal constructs was determined The compounds for stability studies were prepared by conjugation of TCO-linkers (3aSR,9aSR,E)-I (R = (4-([(2,5-dioxopyrrolidin-1-yl)oxy]carbonyl)phenyl)methyl, 2-[2-(2-(2-[(4-nitrophenoxycarbonyl)oxy]ethoxy)ethoxy)ethoxy]ethyl, II) to mAbs, such as Rituximab and Obinutuzumab, and subsequent labeling with a reactive Cy3-functionalized tetrazine.

Bioconjugate Chemistry published new progress about 1466420-02-9. 1466420-02-9 belongs to catalysis-chemistry, auxiliary class Copper-Free Click Chemistry,Tetrazine, name is (4-(6-Methyl-1,2,4,5-tetrazin-3-yl)phenyl)methanamine trifluoroacetic acid, and the molecular formula is C12H12F3N5O2, Application In Synthesis of 1466420-02-9.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Bianchi, Alberto published the artcileUltrastructural studies of the effects of Allium sativum on phytopathogenic fungi in vitro, COA of Formula: C3H8N2S, the publication is Plant Disease (1997), 81(11), 1241-1246, database is CAplus and MEDLINE.

A study was made of the effects of garlic on the development of mycelium in the following phytopathogenic fungi: Fusarium solani (Mart.) Sacc., Rhizoctonia solani Kuhn, Pythium ultimum Trow var. ultimum, and Colletotrichum lindemuthianum (Sacc. and Magnus) Briosi and Cav. A suspension of micronized garlic powder, which has volatile organic compounds mainly consisting of linear chain aldehydes, allyl sulfides and disulfides, was used for the trials. Mycelial development of the fungi was strongly inhibited at the maximum concentration of the aqueous extract tested (100 mL/L); however only the growth of P. ultimum var. ultimum was entirely blocked. Transmission and SEM revealed cytomorphol. alterations of the hyphae treated with garlic. R. solani and C. lindemuthianum hyphae appeared especially collapsed, while those of F. solani were less damaged, although thinner than the control hyphae. A general increase in vacuolization was also observed, with consequent reduction in the cytoplasm of the treated fungal cells. R. solani also revealed a thickening of the cell wall, whereas C. lindemuthianum revealed a singular accumulation of osmiophil bodies immediately under the cell membrane.

Plant Disease published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C3H8N2S, COA of Formula: C3H8N2S.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Khachatryan, R. H. published the artcilePhase-transfer catalysis in synthesis of unsaturated phosphine oxides, SDS of cas: 4141-48-4, the publication is Khimicheskii Zhurnal Armenii (1999), 52(1-2), 77-84, database is CAplus.

Unsaturated tertiary phosphine oxides were prepared in 51-93% yields by reaction of R₂P(O)H (R = Ph, Et) with alkenyl or alkynyl halides, e.g., CH₂:CHCH₂Br, ClCH₂CH:CMe₂, ClCH₂CH:C(Me)Cl, ClCH₂Cú·CMe, ClCH₂Cú·CH, ClCH₂CH:CH₂, in C₆H₆ containing a catalytic amount of Katamine AB and excess KOH or K₂CO₃. The nature of the base affects the structure of the products obtained. Effective methods for synthesis of tertiary phosphine oxides with 1- and 2-propenyl, substituted 2-propenyl, 1,2-propadienyl, 1-propynyl and 2-butynyl groups were worked out. A higher tendency for isomerization of diphenyl-2-propynyl-phosphine oxide as compared with the di-Et analog was observed Use of phase-transfer catalysis for synthesis of unsaturated tertiary phosphine oxides is preferable to a superbasic medium.

Khimicheskii Zhurnal Armenii published new progress about 4141-48-4. 4141-48-4 belongs to catalysis-chemistry, auxiliary class Aryl phosphine ligand,Mono-phosphine Ligands, name is Allyldiphenylphosphine oxide, and the molecular formula is C15H15OP, SDS of cas: 4141-48-4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Mysak, A. E. published the artcileGas-chromatographic analysis of branched carboxylic acids formed during the carboxylation of C6-10 ¦Á-alkenes, Quality Control of 3115-28-4, the publication is Zhurnal Analiticheskoi Khimii (1970), 25(10), 2014-17, database is CAplus.

The aliphatic isomeric acids formed during the carboxylation of C6-10 ¦Á-alkenes were determined by gas chromatog. of their Me esters on a capillary column (50 m long and 0.25 mm diameter) coated with polypropylene glycol, column temperature 120¡ã, by using a flame ionization detector, and 1.3 ml N/min., 15 ml H/min., and 150 ml air/min. Relative retention volumes of the Me esters of the isomeric acids increase in the order: ¦Á-methyl-¦Á-propyl-, ¦Á, ¦Á-dimethyl-, ¦Á-methyl-¦Á-ethyl-, ¦Á-butyl-¦Á-propyl-, ¦Á-ethyl-, and ¦Á-methylalkenes.

Zhurnal Analiticheskoi Khimii published new progress about 3115-28-4. 3115-28-4 belongs to catalysis-chemistry, auxiliary class Aliphatic Chain, name is 2-Butylhexanoic acid, and the molecular formula is C10H20O2, Quality Control of 3115-28-4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Keshavarz, Mohammad Hossein published the artcileAn improved simple method for prediction of entropy of fusion of energetic compounds, Safety of Bis(4-nitrophenyl)amine, the publication is Fluid Phase Equilibria (2013), 52-62, database is CAplus.

A new general method has been introduced for prediction of entropy of fusion of important classes of energetic compounds including polynitro arene, acyclic and cyclic nitramine, nitrate ester and nitroaliph. compounds It extends earlier work, which was restricted to nitroarom. compounds, to estimate entropy of fusions of any compound containing at least one of the groups ArNO₂, CNO₂, CONO₂ or NNO₂ through additive and correcting non-additive functions. The number of nitrogen and oxygen atoms in an energetic compound was used as additive function. For 92 compounds (corresponding to 167 measured values) belong to different types of energetic materials, the root-mean square (rms) deviation of the additive part is 13.5 J/(K mol). The reliability of the new model can be increased by considering one correcting non-additive function for which the value of rms deviation is 10.2 J/(K mol). The predicted outcomes of the new method, by using only additive part or both additive and non-additive functions, give more reliable results as compared to one of the best available methods.

Fluid Phase Equilibria published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Safety of Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gudun, Kristina A. published the artcileCobalt-Catalyzed Deoxygenative Hydroboration of Nitro Compounds and Applications to One-Pot Synthesis of Aldimines and Amides, Product Details of C8H8O2, the publication is Advanced Synthesis & Catalysis (2022), 364(3), 601-611, database is CAplus.

The com. available and bench-stable Co(acac)₂ ligated with bis[(2-diphenylphosphino)phenyl] ether (dpephos) was employed for selective room temperature hydroboration of nitro compounds with HBPin (TOF up to 4615 h^-1), tolerating halide, hydroxy, amino, ether, ester, lactone, amide and heteroaromatic functionalities. These reactions offered a direct access to a variety of N-borylamines RN(H)BPin, which were in situ treated with aldehydes and carboxylic acids to produce a series of aldimines and secondary carboxamides without the need for dehydrating and/or coupling reagents. Combination of these transformations in a sequential one-pot manner allowed for direct and selective synthesis of aldimines and secondary carboxamides from readily available and inexpensive nitro compounds

Advanced Synthesis & Catalysis published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, Product Details of C8H8O2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia