Tag: M.W=200-250

Rao, L. F. published the artcileComplexation of the uranyl ion (UO₂²⁺) with phenylene-1,2-dioxydiacetic acid, Related Products of catalysis-chemistry, the publication is Inorganic Chemistry (1990), 29(18), 3589-92, database is CAplus.

Complexation of uranyl cations by phenylene-1,2-dioxydiacetic acid was studied by potentiometry, calorimetry, solvent extraction, and ¹H NMR spectroscopy. Complexation parameters at 298 K and ionic strength 0.1 (NaClO₄) were determined The thermodn. and NMR data are consistent with bonding of UO₂²⁺ to the carboxylate groups of the ligand, with weak or no interaction with the ether oxygens. No 1:2 complexation was observed

Inorganic Chemistry 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, Related Products of catalysis-chemistry.

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

Go, Maybelle Kho published the artcileEstablishing a Toolkit for Precursor-Directed Polyketide Biosynthesis: Exploring Substrate Promiscuities of Acid-CoA Ligases, SDS of cas: 16909-09-4, the publication is Biochemistry (2012), 51(22), 4568-4579, database is CAplus and MEDLINE.

Polyketides are chem. diverse and medicinally important biochems. that are biosynthesized from acyl-CoA precursors by polyketide synthases. One of the limitations to combinatorial biosynthesis of polyketides has been the lack of a toolkit that describes the means of delivering novel acyl-CoA precursors necessary for polyketide biosynthesis. Using five acid-CoA ligases obtained from various plants and microorganisms, we biosynthesized an initial library of 79 acyl-CoA thioesters by screening each of the acid-CoA ligases against a library of 123 carboxylic acids. The library of acyl-CoA thioesters includes derivatives of cinnamyl-CoA, 3-phenylpropanoyl-CoA, benzoyl-CoA, phenylacetyl-CoA, malonyl-CoA, saturated and unsaturated aliphatic CoA thioesters, and bicyclic aromatic CoA thioesters. In our search for the biosynthetic routes of novel acyl-CoA precursors, we discovered two previously unreported malonyl-CoA derivatives (3-thiophenemalonyl-CoA and phenylmalonyl-CoA) that cannot be produced by canonical malonyl-CoA synthetases. This report highlights the utility and importance of determining substrate promiscuities beyond conventional substrate pools and describes novel enzymic routes for the establishment of precursor-directed combinatorial polyketide biosynthesis.

Biochemistry published new progress about 16909-09-4. 16909-09-4 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Benzene,Ether, name is (E)-3-(2,4-Dimethoxyphenyl)acrylic acid, and the molecular formula is C11H12O4, SDS of cas: 16909-09-4.

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

Wang, Juan published the artcileAdsorptive separation of fluoroborate anion in a foam column, Related Products of catalysis-chemistry, the publication is Huagong Xuebao (Chinese Edition) (1994), 45(3), 380-4, database is CAplus.

A foam column was used for removing fluoroborate anion. The removal rate of fluoroborate anion was measured. Dodecylamine acetate could be used as a carrier. Dodecylamineacetate concentrations, gas flow rates, and pH were significant factors.

Huagong Xuebao (Chinese Edition) 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 C25H47NO8, Related Products of catalysis-chemistry.

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

Tadpetch, Kwanruthai published the artcileCytotoxic naphthoquinone and a new succinate ester from the soil fungus Fusarium solani PSU-RSPG227, Product Details of C15H14O3, the publication is Phytochemistry Letters (2015), 106-110, database is CAplus.

A new naphthoquinone, solaninaphthoquione (1), and a new succinate ester derivative, 4-(4-hydroxyphenethoxy)-4-oxobutanoic acid (2), were isolated from the soil fungus Fusarium solani PSU-RSPG227 together with five previously reported compounds; javanicin (3), monaspilosin (4), aspergillol B (5), tyrosol (6) and 4-hydroxyphenylacetic acid (7). Their structures were elucidated primarily by NMR spectroscopic data. Due to paucity of materials, compounds 2, 4 and 5 as well as analogs of 5 were prepared for biol. activity evaluation. Compound 1 showed significant cytotoxic activity against breast cancer (MCF-7) cells and mild cytotoxic activity against oral human carcinoma (KB) cells (IC₅₀ values of 21.3 and 22.6 ¦ÌM, resp.) compared to standard compounds Compound 1 also displayed weak antimalarial activity (IC₅₀ of 26.1 ¦ÌM).

Phytochemistry Letters published new progress about 1860-58-8. 1860-58-8 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(3-(Benzyloxy)phenyl)acetic acid, and the molecular formula is C11H10N4, Product Details of C15H14O3.

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

Zelenina, L. N. published the artcileFluorophenyl derivatives of elements II-VI groups. Phase transitions thermodynamics and growing films by CVD, Category: catalysis-chemistry, the publication is Journal of Thermal Analysis and Calorimetry (2008), 92(3), 723-727, database is CAplus.

The enthalpies and temperatures of melting of RSi(CH₃)₃, R₄Si, R₃P, R₃As, R₃Sb, R₃Bi, R₂Te, and R₂Hg (R = C₆F₅) were obtained by scanning calorimetry measurements. The pressure of the saturated and unsaturated vapors of RSi(CH₃)₃, R₂Si(CH₃)₂, R₄Si, R₃Ga, R₃P, R₃As, R₃Sb, R₃Bi, R₂Te, and R₂Hg was measured by the static method with a membrane-gauge manometer. All investigated substances proceeded to vapor as monomers. Equations approximating the dependences of saturated vapor pressures on temperature and the enthalpies and entropies of vaporization were obtained. Graphite films with silicon intercalated up to 25 at.% were grown by CVD using R₄Si as a precursor. These films showed semiconductor properties in the temperature interval 80-300 K.

Journal of Thermal Analysis and Calorimetry 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 C17H18N3NaO3S, Category: catalysis-chemistry.

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

Zelenina, L. N. published the artcileThe thermodynamic properties of talyl- and phenylsilanes, Safety of Trimethyl(perfluorophenyl)silane, the publication is Russian Journal of Physical Chemistry (2006), 80(2), 139-142, database is CAplus.

The enthalpies of fusion of C₆H₅SiH₃, C₆F₅SiMe₃, and (C₆F₅)₄Si were obtained in scanning calorimetry measurements. Pressure over the condensed talylsilane 4-CF₃C₆F₄SiCH₃, phenylsilane C₆H₅SiH₃, and pentafluorophenylsilane C₆F₅SiCH₃, (C₆F₅)₂SiMe₂, and (C₆F₅)₄Si phases was measured by the static method using membrane null manometers. Equations approximating the dependences of saturated vapor pressures on temperature and the enthalpy and entropy of vaporization were obtained.

Russian Journal of Physical Chemistry 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 C19H15NO3, Safety of Trimethyl(perfluorophenyl)silane.

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

Gawryszewska, P. published the artcileStructure and optical spectroscopy of Yb(III) complex with o-phenylenedioxydiacetic acid, HPLC of Formula: 5411-14-3, the publication is Journal of Molecular Structure (2011), 988(1-3), 59-64, database is CAplus.

The Na[Ln(C₁₀H₈O₆)₂(H₂O)₂]¡¤2H₂O (Ln = Yb(III), Lu(III)) monocrystals were obtained and the crystal structure was solved. The Yb(III) complex forms a structure with the space group P2₁/c and a 15.528(1), b 21.098(1), c 7.766(1) ?, and ¦Â 92.58(2)¡ã. Optical properties of this complex were studied using the methods of absorption (293 K, 4 K), luminescence (77 K) and IR spectroscopy. The ligand-field splitting in the relevant states can be determined from low-temperature high-resolution absorption and luminescence. The split of ²F_5/2 and ²F_7/2 was determined as 540 and 592 cm^-1, resp. The f-f luminescence was not induced by exciting into the ¹¦Ð-¹¦Ð^* absorption band of the ligand but only by exciting into Yb(III) level with a very short ²F_5/2 level decay time equal to 0.32 and 0.69 ¦Ìs at 293 and 77 K, resp.

Journal of Molecular Structure 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, HPLC of Formula: 5411-14-3.

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

Arienzo, Rosa published the artcileStructure-activity relationships of a novel series of melanin-concentrating hormone (MCH) receptor antagonists, Recommanded Product: 2-(4-(Trifluoromethyl)phenoxy)acetic acid, the publication is Bioorganic & Medicinal Chemistry Letters (2004), 14(15), 4099-4102, database is CAplus and MEDLINE.

A new series of 2-aminoquinolines, e.g. I [R¹R²N = N-methylpiperazino, morpholino, piperidino, etc.; R¹ = Me₂CH, cyclopentyl, R² = H; R¹ = Me, PhCH₂, R² = Me; R³ = Ph, 4-ClC₆H₄, 4-F₃CC₆H₄, 2,4-Cl₂C₆H₃, etc.] has been identified as antagonists of the melanin concentrating hormone receptor (MCH-1R). Syntheses and structure-activity relationships are described leading to a compound having low nanomolar activity against the receptor and demonstrating functional antagonism. Studies also showed that some of the compounds were selective against a range of other G protein-coupled receptors.

Bioorganic & Medicinal Chemistry Letters published new progress about 163839-73-4. 163839-73-4 belongs to catalysis-chemistry, auxiliary class Trifluoromethyl,Fluoride,Carboxylic acid,Benzene,Ether, name is 2-(4-(Trifluoromethyl)phenoxy)acetic acid, and the molecular formula is C9H7F3O3, Recommanded Product: 2-(4-(Trifluoromethyl)phenoxy)acetic acid.

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

Benmalek, M. published the artcileExtraction of halides with organometallics. I. Comparative study of extraction with phenyl derivatives of Group IV and VA elements, Recommanded Product: Difluorodiphenylsilane, the publication is Journal of Inorganic and Nuclear Chemistry (1974), 36(6), 1359-63, database is CAplus.

The extraction of F- from aqueous solutions was studied using Ph derivatives of Group IVA and VA elements. At pH < 2, Ph2SiCl2 is the most suitable extractant, but Ph3SbCl2 and Ph3BiCl2, although less soluble, allow F- separation at pH 1-7.

Journal of Inorganic and Nuclear 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

Joseph, Roymon published the artcileBenzothiazole appended lower rim 1,3-di-amido-derivative of calix[4]arene: Synthesis, structure, receptor properties towards Cu²⁺, iodide recognition and computational modeling, Computed Properties of 1798-04-5, the publication is Inorganica Chimica Acta (2010), 363(12), 2833-2839, database is CAplus.

A new mol. fluorescent sensor (L) for Cu²⁺ was synthesized by derivatizing the lower rim of calix[4]arene with benzothiazole moiety, through amide linkage to result in 1,3-di-derivative The receptor mol., L exhibited fluorescence quenching towards Cu²⁺ among eleven divalent ions, viz., Mn²⁺, Fe²⁺, Co²⁺, Ni²⁺, Cu²⁺, Zn²⁺, Cd²⁺, Hg²⁺, Ca²⁺, Mg²⁺ and Pb²⁺, studied. The 1:1 stoichiometry of the complex formed between L and Cu²⁺ was demonstrated by electronic absorption and ESI-MS. The role of calix[4]arene for the selective sensing of Cu²⁺ was established by comparing the data with that obtained for an appropriate control mol. The min. concentration at which L can detect Cu²⁺ is 403 ppb. The computations carried out at DFT level provided the coordination and structural features of the Cu²⁺ complex of L as species of recognition. The Cu²⁺ complex thus formed recognizes iodide by bringing change in the color, among the 14 anions studied.

Inorganica Chimica Acta 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 C12H16O3, Computed Properties of 1798-04-5.

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