Tag: M.W=200-250

Surya Prakash, G. K. published the artcileReduction of carbonyl to methylene. Organosilane-Ga(OTf)₃ as an efficient reductant system, Related Products of catalysis-chemistry, the publication is Catalysis Letters (2011), 141(4), 507-511, database is CAplus.

Direct carbonyl reduction to methylene was achieved by mild reductant system obtained from the combination of organosilane and Ga(OTf)₃, a water tolerant, recyclable, catalyst. Among a series of organosilanes studied, Me₂SiHCl showed the highest efficiency. Both aromatic and aliphatic ketones were effectively reduced to the corresponding methylene products with high functional groups tolerance, under very mild conditions in a relatively short period of time with good to excellent yields.

Catalysis Letters 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 C25H23NO4, Related Products of catalysis-chemistry.

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

Peterson, John R. published the artcileCerium(IV)-induced nitration of cinnamic acids. Novel remote electrophilic substitution, Quality Control of 16909-09-4, the publication is Canadian Journal of Chemistry (1988), 66(7), 1670-4, database is CAplus.

The treatment of (E)-3,4-(MeO)₂C₆H₃CH:CHCO₂H with (NH₄)Ce(NO₃)₆ in CF₃CO₂H afforded 79% (E)-4,5,2-(MeO)₂(O₂N)C₆H₂CH:CHNO₂ (I). The unusual ipso substitution of the CO₂H moiety by NO₂ illustrated a new reaction manifold of Ce(IV). Four cinnamic acids were similarly nitrated to give products analogous to I, though in only 3-39% yields. The bidentate nitrato structure of the metal salt is believed to account for the nitrating ability of this system.

Canadian Journal of Chemistry 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, Quality Control of 16909-09-4.

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

Ruiz Cruz, J. published the artcilePollution of natural waters by synthetic detergents. XV. Relation between structure and biodegradation of cationic surfactants in river water, COA of Formula: C14H31NO2, the publication is Grasas y Aceites (Sevilla, Spain) (1979), 30(2), 67-74, database is CAplus.

The influence of chem. structure on the biodegradability of 9 cationic surfactants in river water was studied. The effects of the structure of the hydrophilic and other secondary groups and the number and length of alkyl chains and their nature were considered for typical cationic surfactants.

Grasas y Aceites (Sevilla, Spain) 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

Otsuki, Akira published the artcileSeparation of rare earth fluorescent powders by two-liquid flotation using organic solvents, Computed Properties of 2016-56-0, the publication is Japanese Journal of Applied Physics (2008), 47(6), 5093-5099, database is CAplus.

We describe a method for separation of ultra-fine particles prior to recycling. The authors suggest a 2-step process for separating a mixture of 3 different rare earth fluorescent powders (i.e., red, green, and blue). Each step of the process is a 2-liquid flotation, which involves 2 organic solvents (i.e., a non-polar and a polar solvent, in order to create 2 different phases) and a surfactant to manipulate the wettability of the powders. In the 1st step, the green powder migrates toward a non-polar phase such as n-heptane and remains at the interface of 2 solvents. The remaining 2 components precipitate in the polar phase. In the 2nd step, the blue powder migrates toward a non-polar phase and remains at the interface of 2 solvents, while the red powder precipitates in the polar phase. After testing various non-polar solvents, a selection was made, and the operational parameters (e.g., concentration of surfactant and solid) were varied in order to maximize the efficiency of the process. The grade and recovery of each separated fluorescent powder were both >90%.

Japanese Journal of Applied Physics 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, Computed Properties of 2016-56-0.

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

Woods, Lucy A. published the artcileNative State Mass Spectrometry, Surface Plasmon Resonance, and X-ray Crystallography Correlate Strongly as a Fragment Screening Combination, Application of 2-(3-(Benzyloxy)phenyl)acetic acid, the publication is Journal of Medicinal Chemistry (2016), 59(5), 2192-2204, database is CAplus and MEDLINE.

Fragment-based drug discovery (FBDD) is contingent on the development of anal. methods to identify weak protein-fragment noncovalent interactions. Herein we have combined an underutilized fragment screening method, native state mass spectrometry, together with two proven and popular fragment screening methods, surface plasmon resonance and X-ray crystallog., in a fragment screening campaign against human carbonic anhydrase II (CA II). In an initial fragment screen against a 720-member fragment library (the “CSIRO Fragment Library”) seven CA II binding fragments, including a selection of nonclassical CA II binding chemotypes, were identified. A further 70 compounds that comprised the initial hit chemotypes were subsequently sourced from the full CSIRO compound collection and screened. The fragment results were extremely well correlated across the three methods. Our findings demonstrate that there is a tremendous opportunity to apply native state mass spectrometry as a complementary fragment screening method to accelerate drug discovery.

Journal of Medicinal Chemistry 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 C6H13N3O2, Application of 2-(3-(Benzyloxy)phenyl)acetic acid.

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

Chernyshev, E. A. published the artcileAddition of arylfluorosilanes to styrene, HPLC of Formula: 312-40-3, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1965), 650-4, database is CAplus.

Addition of 16 g. 40% HF at -30 to -40¡ã to 60 g. PhSiHCl₂ gave 74% PhSiHF₂, b. 111-11.5¡ã, n²⁰_D 1.4442, d₂₀ 1.1194; similarly were prepared 55% Ph₂SiHF, b₂ 92-3¡ã, 1.5550, 1.1072, and 48% 1-C₁₀H₇SiHF₂, b₂₀ 124-6¡ã, 1.5600, 1.2136. PhSiHCl₂ added to PhCH:CH₂ in the presence of H₂PtCl₆ catalyst gave after 5 hrs. on a stream bath 43% PhCH₂CH₂SiPhF₂, b_2.5 134¡ã, 1.5650, 1.1688. PhCH:CH₂ and PhSiHF₂ similarly gave in 2 hrs. at 30-5¡ã 83% mixed PhC₂H₄SiPhF₂, b₂₀ 160-2¡ã, 1.5262, 1.1156; ir spectra indicated that the CHMe bridge predominated over the CH₂CH₂ bridge in this mixture by 3:1. PH₂SiHF and PhCH:CH₂ gave 80% 1:1 mixture of isomeric PhC₂H₄SiPh₂F, b_4.5 194.5-96¡ã, 1.5828, 1.1036. 1-C₁₀H₇SiHF₂ and PhCH:CH₂ gave 65% mixed isomers of 1-C₁₀H₇Si(C₂H₄Ph)F₂, b₂ 154-6¡ã, 1.5915, 1.1876. A 1:1 mixture of PhSiHF₂ and PhSiHCl₂ kept 1.5 hrs. then treated with PhCH:CH₂ and H₂PtCl₆ gave 83.8% PhC₂H₄SiPhF₂; other ArSiHF₂ behaved similarly. Passage of PhSiHF₂ and PhCl through a quartz tube at 580¡ã gave 22% Ph₂SiF₂, b₄ 98¡ã, 1.5372, 1.1554, and some PhSiF₃ and PhSiHF₂.

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya 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, HPLC of Formula: 312-40-3.

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

Apostolopoulos, A. X. published the artcileSilylation of human enamel and dentine and its effect on acid dissolution, Safety of Difluorodiphenylsilane, the publication is Archives of Oral Biology (1971), 16(2), 233-5, database is CAplus and MEDLINE.

Treatment of human enamel and dentine particles with diphenyldifluorosilane (I), triphenyl-chlorosilane, dodecyltrichlorosilane, and 2 other silylating agents caused a reduction in their rate of dissolution by an acidic acetate buffer. Significant differences in the effect of these reagents were observed between enamel and dentine. These differences could be attributed to: the ability of each silylating agent to react with various functional groups on the surface of the enamel and dentine particles and form water-stable silyl derivatives; the density of the silyl derivatives and their degree of hydrophobicity; the generation of HF during the silylation process with reagents containing displaceable F and exchange of its F- with the hydroxyl group on the apatite lattice.

Archives of Oral Biology 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, Safety of Difluorodiphenylsilane.

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

Aleksandrovich, Kh. M. published the artcileESR-spectroscopic study of the micellar state of solutions of higher aliphatic amine salts, Quality Control of 2016-56-0, the publication is Kolloidnyi Zhurnal (1990), 52(5), 835-40, database is CAplus.

An ESR-spectroscopic study was made of micellar solutions of aliphatic amine acetate salts with a long C₁₂-C₁₈ chain, aimed at evaluation of their micellar state on the basis of mol. interaction and ionization of polar groups. The change of these parameters was examined various factors (ionic strength of surfactant solutions, temperature, solubilization of organic oleophilic substances). A relation between the micellar state and the flotability of surfactants was established.

Kolloidnyi Zhurnal 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, Quality Control of 2016-56-0.

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

Korshuk, E. F. published the artcileCharacteristics of structure and water-repellent effect of solutions of bases and salts of higher aliphatic amines, Safety of Dodecylamineacetate, the publication is Vestsi Akademii Navuk BSSR, Seryya Khimichnykh Navuk (1989), 29-33, database is CAplus.

The structure and hydrophobization activity of solutions of C₁₂-, C₁₄-, and C₁₈-aliphatic amines and their acetates were studied with respect to their use as collectors for the separation of KCl and NaCl in K ore flotation. H₂O was used as a solvent for amine acetates, while ETOH and iso-PrOH as solvents for amines. The adsorption of amine acetates on KCl crystals is preceded by the association of mols. and ions in micelles, while the adsorption of amine bases takes place, predominantly, from their ionic-mol. solutions with subsequent association in the surface adsorption layer. The higher effectiveness of amine collectors compared to their acetates at equal length of the alkyl chain was due to the higher d. of the adsorption layer at lower equilibrium concentrations Thus, the consumption of amine solutions in iso-PrOH for the flotation of sylvinite ores is much lower than that of amine salts.

Vestsi Akademii Navuk BSSR, Seryya Khimichnykh Navuk 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, Safety of Dodecylamineacetate.

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

Korshuk, E. F. published the artcileEffect of surface-active modifiers (aliphatic amines and their salts) on the physicochemical properties of granulated potassium fertilizer, Related Products of catalysis-chemistry, the publication is Zhurnal Prikladnoi Khimii (Sankt-Peterburg) (1999), 72(4), 559-563, database is CAplus.

A study was made of the physicochem. properties of granulated potassium fertilizers (water absorption, hydrophobicity, dynamic strength) in relation to the possibility of using higher aliphatic amines and their salts to regulate these properties. Data are reported for the acetates and chlorides of C_12-18 amines; other amines (Armin NT, ASSA-E, Fludiram F-94, Fludiram BR-3) were also investigated.

Zhurnal Prikladnoi Khimii (Sankt-Peterburg) 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, Related Products of catalysis-chemistry.

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