Catalysis-chemistry

Xu, Weiqiang published the artcileThe crystal structures of ten supramolecular salts of benzylamine and organic acids, Safety of 2,2′-Dithiodibenzoic acid, the publication is Journal of Molecular Structure (2020), 128554, database is CAplus.

This article studies the benzylamine based supramol. adducts in ten crystalline solids, where the acids have been integrated. Addition of the benzylamine to the solution of organic acid makes the corresponding supramol. assemblies. All the compounds crystallize as their organic salts with the acidic H moved to the NH₂ of the benzylamine and they have been featured via IR, mp, EA and XRD in detail. The key driving force is attributed to the classical H-bonds from benzylamine and the acids. The other extensive non-covalent interactions also play great functions in space association with the mol. counter partners in relevant crystals. The homo, hetero supramol. synthons or both were built at these salts, and the characteristic R²₄(8), R³₄(10) and R⁴₄(12) graph sets have been frequently established in the salts due to the H-bonds and non-covalent associations For the synergistic effects of the classical H-bonds and the various non-covalent bonds, these salts adopted 1D/2D/3D arrangements.

Journal of Molecular Structure published new progress about 119-80-2. 119-80-2 belongs to catalysis-chemistry, auxiliary class sulfides,Carboxylic acid,Benzene, name is 2,2′-Dithiodibenzoic acid, and the molecular formula is C5H8N2O, Safety of 2,2′-Dithiodibenzoic acid.

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

Dilworth, Jonathan R. published the artcileSyntheses and structures of [Re(SC₆H₃Me₂-2,6)₃(PPh₃)], [Re(SC₆H₃Me₂-2,6)₃(Bu^tNC)₂], [Re(SC₆H₂Prⁱ₃-2,4,6)₃L(PPh₃)] (L = N₂ or CO) and [ReH₄(PPh₃)₄][ReO(SC₆H₂Prⁱ₃-2,4,6)₄], Quality Control of 22693-41-0, the publication is Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1995), 3153-64, database is CAplus.

The hydride [ReH₇(PPh₃)₂] reacted with 2,6-dimethylbenzenethiol in toluene to give [Re(SC₆H₃Me₂-2,6)₃(PPh₃)] (1). A crystal structure showed a trigonal-bipyramidal geometry about the Re with an agostic interaction to a thiolate Me occupying an apical site, trans to the PPh₃ ligand. 1 Reacts rapidly with MeCN to give the known [Re(SC₆H₃Me₂-2,6)₃(MeCN)(PPh₃)] (2) and with Bu^tNC to form [Re(SC₆H₃Me₂-2,6)₃(Bu^tNC)₂] (3). The crystal structure of 3 showed trigonal-pyramidal geometry about the Re with asym. coordination of the isocyanide ligands and an unusual configuration for the thiolate aromatic groups. The reactions of the hydrides [ReH₇(PPh₃)₂] and [ReH₅(PPh₃)₃] with 2,4,6-triisopropyl-, 2,6-dimethoxybenzenethiol and tris(2-sulfanylphenyl)phosphine were also studied. With HSC₆H₂Prⁱ₃-2,4,6, [Re(SC₆H₂Prⁱ₃-2,4,6)₃(N₂)(PPh₃)] (4) was formed and its structure determined The preparations and structures of [ReH₄(PPh₃)₄][ReO(SC₆H₂Prⁱ₃-2,4,6)₄], [Re{SC₆H₃(OMe)₂-2,6}₃(PPh₃)] and [Re{P(C₆H₄S-2)₃}(PPh₃)] are also discussed. An alternative convenient route to [ReH₄(PPh₃)₄]⁺ from [ReH₅(PPh₃)₃] is presented.

Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Quality Control of 22693-41-0.

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

Xiao, He-Xin published the artcileBulky Di(1-adamantyl)phosphinous Acid-Ligated Pd(II) Precatalysts for Suzuki Reactions of Unreactive Aryl Chlorides, Name: 4,4′-Dimethyldiphenyl, the publication is ACS Omega (2021), 6(50), 35134-35143, database is CAplus and MEDLINE.

Di(1-adamantyl)phosphine oxide (SPO-Ad: Ad₂P(V)(=O)H), a stable tautomer of di(1-adamantyl)phosphinous acid (PA-Ad: Ad₂P(III)-OH), was employed to synthesize two new PA-Ad-coordinated complexes, POPd-Ad and POPd2-Ad. POPd-Ad was easily transformed from POPd2-Ad in MeCN, and the [M – H]^– ion of the deprotonated POPd-Ad was observed in the electrospray ionization-mass spectrum of POPd2-Ad. Both complexes are effective precatalysts for the Suzuki reaction of aryl chlorides. The reduction of Pd(II) in POPd-Ad and POPd2-Ad by arylboronic acid was examined, and the ideal Pd-to-PA ratio in the Suzuki reaction is 1:1. The effect of temperature on the catalytic yields was studied to examine the possible ligation state of the active species and the dimer-to-monomer process of POPd2-Ad. Mononuclear and mono-ligated Pd species was assumed to be catalytically active. The electronic and steric effects of PA-Ad were slightly better than those reported for PA-tBu (^tBu₂P(III)-OH). D. functional theory calculations were performed to evaluate the formation of mono-ligated and mononuclear Pd species from POPd-Ad and POPd2-Ad. Also, the reaction time and catalyst loading could be reduced for the reported POPd1-tBu precatalyst using the optimized reaction conditions for POPd-Ad. The complexes synthesized in this extensive study will complement the existing SPO-coordinated POPd series of precatalysts.

ACS Omega published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C9H12O, Name: 4,4′-Dimethyldiphenyl.

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

Chao, Chen-Shen published the artcileStudies on fabric dye additives – dye additives for polyacrylic fibers, COA of Formula: C14H31NO2, the publication is Yingyong Jiemian Huaxue (1979), 2-8, database is CAplus.

In the dyeing of polyacrylonitrile fibers with Astrazon Yellow 3 GL, Astrazon Red GTL, and Astrazon Blue FRR in the presence of 21 cationic surfactants, 15 anionic surfactants, and 26 nonionic surfactants, alkylbenzyldimethylammonium chlorides, alkyltrimethylammonium chlorides, and alkylhydroxyimidazolines gave good results. Dyeing was improved by mixing the above cationic surfactants with C₁₆H₃₃(OCH₂CH₂)_nOH [9004-95-9], C₁₇H₃₅CO(OCH₂CH₂)_nOH [9004-99-3], or similar nonionic surfactants.

Yingyong Jiemian Huaxue published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H31NO2, COA of Formula: C14H31NO2.

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

London, Clare published the artcileImidazopyridines: a novel class of hNa_v1.7 channel blockers, Related Products of catalysis-chemistry, the publication is Bioorganic & Medicinal Chemistry Letters (2008), 18(5), 1696-1701, database is CAplus and MEDLINE.

A series of imidazopyridines were evaluated as potential sodium channel blockers for the treatment of neuropathic pain. Several members were identified with good hNa_v1.7 potency and excellent rat pharmacokinetic profiles. Compound I had good efficacy (52% and 41% reversal of allodynia at 2 and 4 h post-dose, resp.) in the Chung rat spinal nerve ligation (SNL) model of neuropathic pain when dosed orally at 10 mg/kg.

Bioorganic & Medicinal Chemistry Letters published new progress about 421-49-8. 421-49-8 belongs to catalysis-chemistry, auxiliary class Trifluoromethyl,Fluoride,Amine,Aliphatic hydrocarbon chain, name is 1,1,1-Trifluoropropan-2-amine, and the molecular formula is C3H6F3N, Related Products of catalysis-chemistry.

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

Boethling, Robert S. published the artcileDoes the semi-continuous activated sludge (SCAS) test predict removal in secondary treatment?, Recommanded Product: Dodecylamineacetate, the publication is Chemosphere (1997), 35(10), 2119-2130, database is CAplus.

The SCAS test was formalized by the US Soap and Detergent Association in 1965. The SCAS procedure has also been adopted by the Organization for Economic Cooperation and Development as a test for inherent biodegradability and by the US EPA as a test guideline (40CFR 835.3120) under the Toxic Substances Control Act. To study whether the SCAS test may be used to predict removal in full-scale activated sludge treatment systems, we collected all available SCAS data for organic chems., and retrieved data from full-, pilot- or bench-scale continuous-feed activated sludge studies for the chems. that had SCAS data. The intersected file was subjected to statistical anal. Conclusions are: (1) SCAS data were strongly clustered at high (>90%) removal; (2) for SCAS removal >90%, it is probable that removal in the field will be >50%; (3) however, for SCAS removal <90% adequate treatability cannot be predicted with confidence.

Chemosphere published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H31NO2, Recommanded Product: Dodecylamineacetate.

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

Lee, Kang-sang published the artcileMonodentate Non-C₂-symmetric Chiral N-Heterocyclic Carbene Complexes for Enantioselective Synthesis. Cu-Catalyzed Conjugate Additions of Aryl- and Alkenylsilylfluorides to Cyclic Enones, Recommanded Product: Difluorodiphenylsilane, the publication is Journal of Organic Chemistry (2009), 74(12), 4455-4462, database is CAplus and MEDLINE.

A new class of enantioselective conjugate addition (ECA) reactions that involve aryl- or alkenylsilyl fluoride reagents and are catalyzed by chiral non-C₂-sym. Cu-based N-heterocyclic carbene (NHC) complexes are disclosed. Transformations were designed based on the principle that a catalytically active chiral NHC-Cu-aryl or NHC-Cu-alkenyl complex can be accessed from reaction of a Cu-halide precursor with in situ-generated aryl- or alkenyltetrafluorosilicate. Reactions proceed in the presence of 1.5 equiv of the aryl- or alkenylsilane reagents and 1.5 equiv of tris(dimethylamino)sulfonium difluorotrimethylsilicate (TASF). Desired products are isolated in 63-97% yield and 73.5:26.5-98.5:1.5 enantiomeric ratio (47%-97% ee). A major focus of the present studies is the design, evaluation, and development of new chiral imidazolinium salts and their derived NHC-Cu complexes as catalysts that promote reactions of various carbosilanes to a range of electrophilic substrates. Toward this end, nearly 20 new chiral monodentate imidazolinium salts, most of which are non-C₂-sym., were prepared and fully characterized and their ability to serve as catalysts in the ECA reactions was studied.

Journal of Organic Chemistry published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Recommanded Product: Difluorodiphenylsilane.

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

Tu, Yongqiang published the artcileSynthesis of 9-iminedibenzocycloiodonium salts, HPLC of Formula: 1821-27-8, the publication is Lanzhou Daxue Xuebao, Ziran Kexueban (1990), 26(1), 30-4, database is CAplus.

Cyclic iodonium compounds I (R, R¹ = NO₂, NHAc, Br, Cl, iodo; X = Cl, iodo) were prepared starting from 4,4′-dinitrodiphenylamine (II). E.g., iodination of II with I₂/SbCl₅ gave 75% 2,2′-diiodo-4,4′-dinitrodiphenylamine, cyclization of which with K₂S₂O₈/H₂SO₄ gave, after treatment with NaCl/HCO₂H, 45% I (R = R¹ = NO₂, X = Cl).

Lanzhou Daxue Xuebao, Ziran Kexueban 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 C9H7NO4, HPLC of Formula: 1821-27-8.

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

Zhang, Kai published the artcileEfficient and Reversible Absorption of CO₂ by Functional Deep Eutectic Solvents, Formula: C6H20Cl2N4, the publication is Energy & Fuels (2018), 32(7), 7727-7733, database is CAplus.

Extremely low-volatility functional deep eutectic solvents (DESs), based on ethylene glycol (EG) and diethylene glycol (DG) as hydrogen-bond donor and the ammonium salts obtained from triethylenetetramine (TETA) and HCl at different mole ratios as hydrogen-bond acceptor, were designed and used to capture CO₂. All of the designed DESs can efficiently capture CO₂ even at low partial pressures. CO₂ absorption capacity of [TETA]Cl-EG DES with n_[TETA]Cl/n_EG 1:3 is high up to 17.5 wt % (1.456 mol CO₂/mol [TETA]Cl) at 40 ¡ãC and 1 atm. CO₂ absorption capacity decreases with increasing temperature and decreasing CO₂ partial pressure. Regeneration experiments show that CO₂ absorption capacities in [TETA]Cl-EG DES and [TETA]Cl-DG DES do not vary after five absorption/desorption cycles. It is found that EG or DG can increase the absorption capacity via activating -NH- or -NH₂ on [TETA]Cl and enhance the basicity of DESs. In addition, CO₂ absorption mechanism in [TETA]Cl-EG DES based on the change of its viscosity during absorption and FTIR anal. indicates that there is a chem. interaction between CO₂ and [TETA]Cl, and the stoichiometry for the reversible absorption is 1.5 mols. of CO₂ per [TETA]Cl-EG DES mol.

Energy & Fuels published new progress about 38260-01-4. 38260-01-4 belongs to catalysis-chemistry, auxiliary class Chelating Agents, name is N1,N1′-(Ethane-1,2-diyl)bis(ethane-1,2-diamine) dihydrochloride, and the molecular formula is C20H19NO4, Formula: C6H20Cl2N4.

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

Wang, Chong published the artcileBiomimetic donor-acceptor motifs in carbon nitrides: enhancing red-light photocatalytic selective oxidation by rational surface engineering, Product Details of C13H10F2, the publication is Applied Catalysis, B: Environmental (2021), 120259, database is CAplus.

Oxidation, especially selective oxidation by a heterogeneous catalyst with mol. oxygen, is a core technol. for the conversion of petrochem. feedstock to commodity chems. and pharmaceuticals. Existing catalytic approaches for efficient aerobic oxidation normally rely on the engagement of organometallic centers or transition-metal nanoparticles. In light of the necessity to develop sustainable production methodologies, multiple approaches for the metal-free polymeric carbon nitride (PCN) photocatalytic selective oxidation have been evaluated. However, the insufficient visible light optical absorption, poor charge-carriers separation and the weak driving force towards oxidation reaction impart a serious restriction on the efficiency and selectivity of the organic photosynthesis, especially under extended wavelength solar light irradiation Here, we report a surface engineering photochem. modification method to fabricate a donor-acceptor (D-A) functional carbon nitride photocatalyst (ECN) under ambient conditions. The well-developed D-A structure, preserved high crystallinity and enlarged ¦Ð-conjugation framework of the hybrid semiconductor-mol. ECN samples favor the improvement of the optical absorption, as well as the enhanced separation and migration of the photo-generated charge carriers. As a result, the obtained ECN photocatalysts exhibited remarkable enhancement in the photocatalytic aerobic oxidation of alcs., even under an extended light wavelength of 620 nm red-light irradiation The photocatalytic aerobic sulfides and sp³ C-H oxidation reactions were also considerably accelerated over ECN and may serve as a direct approach for the construction of value-added sulfoxide and ketone products.

Applied Catalysis, B: Environmental published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C10H10O2, Product Details of C13H10F2.

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