Tag: M.W=200-250

Takeda, Shuichi published the artcileMetabolic fate of triethylenetetramine dihydrochloride (trientine hydrochloride, TJA-250) 2. Metabolism study in rats using ¹⁴C-TJA-250, SDS of cas: 38260-01-4, the publication is Oyo Yakuri (1995), 49(2), 173-8, database is CAplus.

The metabolites of triethylenetetramine dihydrochloride (TJA-250) in urine, feces, liver, kidney, and plasma were studied in rats after i.v. or oral administration of ¹⁴C-TJA-250. By both administration routes, the metabolite M-1, which is 1-acetamido-8-amino-3,6-di-azaoctane (acetylated metabolite), was isolated from urine, liver, kidney and plasma. No metabolites were found in feces after oral administration. This observation is supported by the finding that ¹⁴C-TJA-250 was not decomposed in the intestinal microflora in vitro. When ¹⁴C-TJA-250 was incubated at 37 ¡ãC with the whole homogenates of liver, kidney and small intestine, some metabolites including M-1 were generated by small intestine. M-1 was also produced by the S-9 mixture of liver and kidney plus acetyl CoA. These results suggested that TJA-250 is excreted mainly in urine after biotransformation including acetyl conjugation.

Oyo Yakuri 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 C14H26O2, SDS of cas: 38260-01-4.

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

Nishida, Masakazu published the artcileReactions of alicyclic perfluoroimines with trimethyl(pentafluorophenyl)silane, Name: Trimethyl(perfluorophenyl)silane, the publication is Nippon Kagaku Kaishi (2000), 817-820, database is CAplus.

The title substitution reactions were achieved in the presence of a fluoride anion: the reaction of perfluoro-(5,6-dihydro-2H-1,4-oxazine) (I) with an equal amount of tri-Me(pentafluorophenyl) silane (II) provided not only a monosubstituted compound, i.e. perfluoro-(3-phenyl-5,6-dihydro-2H-1,4-oxazine), but also di- and trisubstituted compounds, i.e. perfluoro-(5,5-diphenyl-phenyl-5,6-dihydro-2H-1,4-oxazine) and perfluoro-(3,5,5-triphenyl-5,6-dihydro-2H-1,4-oxazine), while the reaction of I with three molar excess of II only gave trisubstituted compounds A significant heterocyclic ring effect was observed: the reaction of perfluoro-(3,4-dihydro-2H-pyrrole) (III) with II mainly gave a dimer of III, i.e. perfluoro-(5-pyrrolidino-3,4-dihydro-2H-pyrrole), with a trace amount of a monosubstituted compound, i.e. perfluoro-(5-phenyl-3,4-dihydro-2H-pyrrole).

Nippon Kagaku Kaishi published new progress about 1206-46-8. 1206-46-8 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Trimethyl(perfluorophenyl)silane, and the molecular formula is C9H9F5Si, Name: Trimethyl(perfluorophenyl)silane.

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

Takahashi, Yasuo published the artcileConcentrations of surfactant-derived impure and degradation compounds in river waters and water supplies, Name: 2-(4-(tert-Butyl)phenoxy)acetic acid, the publication is Kankyo Kagaku (2004), 14(4), 845-853, database is CAplus.

The concentrations of surfactant-derived impure and degradation compounds in water samples from the TE river differ among water sampling station. The concentration was about 0.01-0.20 ¦Ìg/L for alkylbenzene, from under quantification limit to ?0.010 ¦Ìg/L for 4-t-butylphenol, about 0.005-0.050 ¦Ìg/L for 4-t-octylphenol, from under quantification limit to ?0.50 ¦Ìg/L for nonylphenol, from under quantification limit to ?0.10 ¦Ìg/L for nonylphenol monoethoxylate, from under quantification limit to ?0.02 ¦Ìg/L for 4-t-butylphenoxy acetic acid, and 0.02-0.07 ¦Ìg/L for 4-t-octylphenoxy acetic acid; chlorides and n-type alkylphenols were not detected. In the TE river water, the anion surfactant concentration was estimated to be higher ?2000 times than alkylbenzene concentration, and the nonionic surfactant concentration to be higher ?200 times than the total concentration of nonylphenol and 4-t-octylphenol. No impure and degradation compounds derived from surfactants were detected in the water supplies. This is because these compounds react with Cl, forming byproducts.

Kankyo Kagaku published new progress about 1798-04-5. 1798-04-5 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(4-(tert-Butyl)phenoxy)acetic acid, and the molecular formula is C38H74Cl2N2O4, Name: 2-(4-(tert-Butyl)phenoxy)acetic acid.

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

Smith, Graham published the artcileStructures of the divalent metal complexes with benzene-1,2-dioxydiacetic acid, COA of Formula: C10H10O6, the publication is Polyhedron (1987), 6(5), 871-9, database is CAplus.

The divalent Ca, Mn, Zn, Co, Mg and Ni complexes of benzene-1,2-dioxydiacetic acid (BDDAH₂) were prepared and their structures were determined by x-ray diffraction. [Ca(BDDA)(H₂O)₂]_n.nH₂O and [Mn(BDDA)(H₂O)₂]_n.nH₂O are isomorphous and isostructural. There is a pentagonal bipyramidal 7-coordination about each metal, involving 4 oxygens of the BDDA ligand, 2 axial waters and a 5th bridging carboxyl O giving a polymer structure. In contrast, [Zn(BDDA)(H₂O)₃].3.5H₂O (and the Co and Mg isomorphs) is discretely monomeric with the bridging position of the Ca/Mn structure replaced by a water. [Ni(BDDAH)₂(H₂O)₄].H₂O is monomeric and 6-coordinate, bonded through only 1 carboxyl group of each of 2 trans-related BDDAH ligands.

Polyhedron 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 C6H5NO, COA of Formula: C10H10O6.

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

Eren, Nimrod M. published the artcileSynthesis, Structure, and Solution Studies of Lithiated Allylic Phosphines and Phosphine Oxides, Safety of Allyldiphenylphosphine oxide, the publication is Organometallics (2020), 39(11), 2080-2090, database is CAplus.

This study reports a new series of 12 ¦Á-lithiated allylic phosphines and phosphine oxides. By incorporating Lewis base donors including di-Et ether (Et₂O), THF (THF), N,N,N’,N’,-tetramethylethylenediamine (TMEDA), and N,N,N’,N’,N”,-pentamethyldiethylenetriamine (PMDETA), nine complexes were structurally characterized by single-crystal X-ray crystallog. This includes novel dilithiated allylic phosphine 4 [PhP{CHCHCH₂Li(TMEDA)}₂] and a rare hemisolvated lithiated phosphine oxide 6 [{Ph₂P(O)CHC(Me)CH₂Li}₂(TMEDA)]. Interestingly, in the solid state, P(III) complexes take advantage of Li-¦Ð interactions to the newly formed delocalized system, in comparison to P(V) complexes where the oxophillic nature of the lithium atom dominates. All 12 complexes were fully characterized in the solution state by multinuclear NMR spectroscopy. DFT calculations on isomers of monomeric lithiated complex 3 [Ph₂PCHC(Me)CH₂Li(PMDETA)] described the low energy barrier between transition steps of the subtle delocalization of the allylic chain.

Organometallics 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, Safety of Allyldiphenylphosphine oxide.

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

Gajewska, Agnieszka published the artcileSynthesis of sulfur containing macrocycles with sucrose scaffold, Product Details of C16H20N2, the publication is Carbohydrate Research (2019), 107825, database is CAplus and MEDLINE.

The first synthesis of sucrose-based macrocycles containing two sulfur atoms in the ring was presented. The synthesis was initiated from known 6,6′-dideoxy-6,6′-di-chloro-1′,2,3,3′,4,4′-hexa-O-benzyl-sucrose in which both terminal positions (C6 and C6′) were elongated by the -S-CH₂-CH₂-OH unit. The resulting diol was converted into dichloride and reacted further with a series of diamines which afforded the corresponding macrocyclic derivatives in high yields.

Carbohydrate Research published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Product Details of C16H20N2.

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

Nokami, Toshiki published the artcileIterative Molecular Assembly Based on the Cation-Pool Method. Convergent Synthesis of Dendritic Molecules, Recommanded Product: Bis(4-fluorophenyl)methane, the publication is Journal of the American Chemical Society (2008), 130(33), 10864-10865, database is CAplus and MEDLINE.

An iterative method for mol. assembly has been developed based on the cation-pool method using (trimethylsilyl)diphenylmethane as a building block. The silyl group works as both an activating group of the benzene ring in the Friedel-Crafts type reaction and an electroauxiliary in the subsequent low temperature anodic oxidation to generate dendritic diarylcarbenium ions, which were well characterized by low-temperature NMR spectroscopy. The convergent synthesis of dendritic mols. has been achieved by repeating the sequence.

Journal of the American Chemical Society 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 C13H10F2, Recommanded Product: Bis(4-fluorophenyl)methane.

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

Ohta, Shun published the artcileSynthesis and characterization of heteroleptic iron(II) thiolate complexes with weak iron-arene interactions, Synthetic Route of 22693-41-0, the publication is Journal of Organometallic Chemistry (2007), 692(21), 4792-4799, database is CAplus.

Selective preparation and characterization of heteroleptic thiolate complexes of Fe(II) are described. The compounds were synthesized by treatment of Fe bis-amide Fe{N(SiMe₃)₂}₂ (1) with 1 equiv of terphenyl thiols HS(2,6-(aryl)₂C₆H₃) (aryl = mesityl, C₆H₃Me₂-2,6, Ph, p-tol) followed by addition of another equivalent of a different thiol. Five heteroleptic thiolate complexes were synthesized according to this pathway. Addnl., three new homoleptic thiolate complexes were also prepared by addition of 2 equiv of bulky thiols to 1. An amide-thiolate intermediate [{(Me₃Si)₂N}Fe]₂(¦Ì-SDpp)₂ (2; Dpp = 2,6-Ph₂C₆H₃) was isolated from the 1:1 reaction of 1 and HSDpp. The x-ray crystal structures of all new thiolate complexes were determined The compounds crystallize as monomers or dimers, dependent on the substituents. They consist of distorted tetrahedral or trigonal-planar Fe centers with weak interactions to the aromatic rings of the thiolate ligands. The shortest Fe-C(arene) contact is 2.272(2) ?. Stronger Fe-arene interactions appear to induce a more pyramidalized arrangement at the Fe center.

Journal of Organometallic 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, Synthetic Route of 22693-41-0.

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

Taniyama, Nobuhiro published the artcileSynthesis of V/Fe/S Clusters Using Vanadium(III) Thiolate Complexes Bearing a Phenoxide-Based Tridentate Ligand, Synthetic Route of 22693-41-0, the publication is Inorganic Chemistry (2014), 53(11), 5438-5446, database is CAplus and MEDLINE.

Vanadium(III) thiolate complexes carrying a phenoxide-based tridentate ligand were prepared from the reactions of V(NMe₂)₄ with the protonated forms of tridentate ligands (H₂(O,P,O) = bis(3,5-di-tert-butyl-2-hydroxyphenyl)phenylphosphine or H₂(O,O,O) = bis(3,5-di-tert-butyl-2-hydroxyphenyl)phenylphosphineoxide) and thiols (HSR; R = mesityl (Mes), 2,4,6-ⁱPr₃C₆H₂ (Tip)). The vanadium-thiolate complexes were subjected to the V/Fe/S cluster synthesis via treatment with an Fe(II) thiolate complex [(TipS)Fe]₂(¦Ì-SDmp)₂ (4, Dmp = 2,6-(mesityl)₂C₆H₃) and elemental sulfur in toluene, giving two new V/Fe/S clusters. One is an edge-bridged double-cubane-type [VFe₃S₄]-[VFe₃S₄] cluster [(O,P,O)VFe₃S₄(SDmp)(HNMe₂)]₂ (5) having face-capping tridentate (O,P,O) ligands on vanadium atoms. The other is a [VFe₃S₄-Fe] cluster [(¦Ì-O,O,O)VFe₃S₄(SDmp)(STip)Fe(¦Ì-SDmp)] (6), the core of which consists of a cubane-type [VFe₃S₄] unit and an external iron atom. The external iron is bound to an SDmp ligand and two oxygen atoms of the tridentate (O,O,O) ligand. Cluster 6 is structurally relevant to the active site of nickel-dependent CO dehydrogenase, and their common structural features include a cubane-type unit with a heterometal, one more iron atom besides the cubane unit, and a bridging ligand between the external iron and the heterometal of the cubane unit.

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 C6H10O2S, Synthetic Route of 22693-41-0.

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

Miyamoto, Katsuhiko published the artcileOptimized terahertz-wave generation using BNA-DFG, Safety of N-Benzyl-2-methyl-4-nitroaniline, the publication is Optics Express (2009), 17(17), 14832-14838, database is CAplus and MEDLINE.

An effective and widely tunable means of producing terahertz (THz) radiation using difference-frequency generation (DFG) in an organic N-benzyl-2-methyl-4-nitroaniline (BNA) crystal was demonstrated by optimizing the pump wavelengths. We calculated the (wideband) refractive index and coherence length mapping of BNA to establish the optimum phase-matching condition of the DFG configuration. To satisfy the phase-matching conditions over the range 0.120 THz, both pump wavelengths were varied from 780 to 950 nm, and the optical wavelength dependency of the THz-wave output was clearly observed We expanded the range of THz-wave generation and increased the power output to ten times that obtained using previous methods.

Optics Express published new progress about 201157-13-3. 201157-13-3 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is N-Benzyl-2-methyl-4-nitroaniline, and the molecular formula is C14H14N2O2, Safety of N-Benzyl-2-methyl-4-nitroaniline.

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