Tag: M.W=200-250

Krut’ko, N. P. published the artcileEffect of surfactants and hydrocarbons on physicomechanical properties of granulated potassium fertilizers, SDS of cas: 2016-56-0, the publication is Vestsi Natsyyanal’nai Akademii Navuk Belarusi, Seryya Khimichnykh Navuk (2006), 72-77, database is CAplus.

The effects of granulated KCl fertilizer hydrophobization on granule water absorption and KCl solubility were studied with the aim to find treatments improving the granule transport and storage stability and resistance to caking. The granules were treated with C₁₂-C₁₆ aliphatic amines in free or salt (acetate, chloride) forms, with free fatty acids (C₄, C₅, C₆, C₇, oleic, linoleic, linolenic), with fatty acid tech. mixtures, petroleum hydrocarbons, and their combinations. Free amines and their acetate salts were more effective in hydrophobization than chloride salts; the effects also increased with the amine chain length. The fatty acids were inferior to amines in the hydrophobization effects. Combined treatments with fatty amines, fatty acids, and non-polar hydrocarbons were very effective in waterproofing the KCl granules, providing up to 60% hydrophobization and 96-97% dynamic strength.

Vestsi Natsyyanal’nai Akademii Navuk Belarusi, 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, SDS of cas: 2016-56-0.

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

Mueller, Richard published the artcileSilicones. LXII. Sulfur tetrafluoride as a fluorinating agent in organosilicon chemistry, Application of Difluorodiphenylsilane, the publication is Zeitschrift fuer Anorganische und Allgemeine Chemie (1963), 324(1-2), 78-85, database is CAplus.

cf. CA 58, 10229g; 59, 7699h. In autoclaves, SF₄ with Me₃SiCl, (Me₃Si)₂O, and Me₃SiOH at 20¡ã gave Me₃SiF in 90, 42, and 70% yields, resp. At -50 to -20¡ã, Ph₂Si(OH)₂ and SF₄ gave 79% Ph₂SiF₂. Me₂Si(OEt)₂ and SF₄ at 20¡ã gave 77% Me₂SiF₂, EtF, and SO(OEt)₂.

Zeitschrift fuer Anorganische und Allgemeine Chemie 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, Application of Difluorodiphenylsilane.

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

Mueller, Richard published the artcileSilicones. LXIII. Thionyl fluoride as a fluorinating agent in organosilicon chemistry, Computed Properties of 312-40-3, the publication is Zeitschrift fuer Anorganische und Allgemeine Chemie (1963), 324(1-2), 86-9, database is CAplus.

In autoclaves at 20¡ã, SOF₂ with Me₂Si(OEt)₂, Me₃SiCl, Me₃SiOH, and Ph₂Si(OH)₂ gave 60-75% Me₂SiF₂ and SO(OEt)₂, 23% Me₃SiF, 90% Me₃SiF, and 80% Ph₂SiF, resp. SOF₂ did not fluorinate (Me₃Si)₂O.

Zeitschrift fuer Anorganische und Allgemeine Chemie 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, Computed Properties of 312-40-3.

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

Mueller, Richard published the artcileCarbonyl fluoride as a fluorination reagent in organosilicon chemistry, Product Details of C12H10F2Si, the publication is Zeitschrift fuer Chemie (1971), 11(10), 382-4, database is CAplus.

The title reaction was investigated on a series of silanols and siloxanes at 0-20¡ã. For example, Me3SiOH gave 79% Me3SiF; Ph2Si(OH)2 gave 59% Ph2SiF2; Me3SiOMe gave 97% Me3SiF and 73% FCO2Me; Me2Si(OEt)2 gave 77.5% Me2SiF2, 86% FCO2Et, and 1.8% (EtO)2CO2H. Other examples were given; Me3SiOSiMe3 and Me3SiOPh did not react.

Zeitschrift fuer Chemie 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, Product Details of C12H10F2Si.

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

Zhao, Zhiming published the artcileDesign and synthesis of tweezers-like artificial receptor of aromatic heterocycles based on multiple hydrogen-bonding sites, SDS of cas: 5411-14-3, the publication is Sichuan Daxue Xuebao, Ziran Kexueban (2001), 38(3), 402-406, database is CAplus.

Eight mol. tweezers 2,6-dibenzamidopyridine, 2,6-di(4-ethoxybenzamido)pyridine, 2,2′-di(pyridine-2-aminocarbonyl)diphenyl, 1,3-di(phenoxyacetamido)pyridine, 1,2-di(phenoxyacetamido)pyridine, 1,3-di(6-benzamidopyridine-2-aminocarbonyl)benzene, 1,3-di[6-(4-nitrobenzamido)pyridine-2-aminocarbonyl]benzeene, and 1,3-di(6-benzamidopyridine-2-aminocarbonyl)pyridine were designed and synthesized by acylation. The structures of these receptors were identified by MS, ¹HNMR, and IR spectra.

Sichuan Daxue Xuebao, Ziran Kexueban 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 C26H26N4O7, SDS of cas: 5411-14-3.

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

Dewanji, Abhishek published the artcileC-F Activation in Perfluorinated Arenes with Isonitriles under UV-Light Irradiation, Category: catalysis-chemistry, the publication is Chemistry – A European Journal (2015), 21(35), 12295-12298, database is CAplus and MEDLINE.

The aryl and alkyl isonitriles efficiently activated the strong C-F bond in perfluoroarenes by simple UV irradiation under mild conditions. Reactions proceeded by formal direct insertion of the isonitrile into the C-F bond without any transition metal. Activation occurs at arene C-F bonds whereas aliphatic C-F bonds remain unreacted. For selected perfluoroarenes C-F activation occurred with high regioselectivity and resulting imidoyl fluorides were transformed into other valuable compounds Theor. studies gave insights into the reaction mechanism.

Chemistry – A European Journal 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, Category: catalysis-chemistry.

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

Febles, Martin published the artcileSynthesis and biological evaluation of crown ether acyl derivatives, Safety of 2-(3-(Benzyloxy)phenyl)acetic acid, the publication is Bioorganic & Medicinal Chemistry Letters (2016), 26(22), 5591-5593, database is CAplus and MEDLINE.

A set of crown Et acyl derivatives based on 18-crown-6 moiety was synthesized and evaluated for biol. activity. In vitro antiproliferative profiling demonstrated significant activities against HBL-100, HeLa, SW1573 and WiDr human cell lines. The most active compound exhibited GI₅₀ values in the range of 3.7-5.6 ¦ÌM. Antimicrobial evaluation showed that three polyaromatic compounds were active against Staphylococcus aureus (MIC₉₀ values from 8.3 ¦ÌM to 50 ¦ÌM), whereas a (decyloxy)benzene substitution exhibited moderate activity against Candida albicans (MIC₉₀ values 36 ¦ÌM). According to SAR evaluation, the size of the crown ether and the acyl side chain had a significant effect on the bioactivity. Aromatic moieties close to the acyl group led to improved bioactivity as exemplified by some of the tested compounds These results provide further evidence on the potential of crown Et structure as a scaffold for developing new biol. probes and lead candidates for drug development.

Bioorganic & Medicinal Chemistry 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 C15H14O3, Safety of 2-(3-(Benzyloxy)phenyl)acetic acid.

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

Matos, M. A. R. published the artcileStandard molar enthalpies of combustion of five trans-dimethoxycinnamic acids, COA of Formula: C11H12O4, the publication is Journal of Chemical Thermodynamics (2001), 33(8), 899-904, database is CAplus.

The standard (p^o = 0.1 MPa) molar enthalpies of formation for 2,3-, 2,4-, 2,5-, 3,4- and 3,5- trans-dimethoxycinnamic acids in the gaseous phase were derived from the standard molar enthalpies of combustion in oxygen of the crystalline compounds determined by static bomb combustion calorimetry at T = 298.15 K and from the literature values for the resp. enthalpies of sublimation. (c) 2001 Academic Press.

Journal of Chemical Thermodynamics 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, COA of Formula: C11H12O4.

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

Dilworth, Jonathan R. published the artcileRhodium and iridium complexes with thiolate and tertiary phosphine ligands. The synthesis and structures of trans-[Ir(SC₆H₃Cl₂-2,6)(CO)(PPh₃)₂], [Rh₂(¦Ì-SC₆H₃Prⁱ₃-2,4,6)₂(CO)₂(PPh₃)₂], [Rh₂H₂(¦Ì-SC₆H₄PPh₂-2)₂(CO)₂(PPh₃)₂][BF₄]₂, and [Rh₂I₆(MeSC₆H₄PPh₂-2)₂], Related Products of catalysis-chemistry, the publication is Dalton (2000), 3007-3015, database is CAplus.

Reaction of [MF(CO)(PPh₃)₂] (M = Rh or Ir) with bulky aromatic thiols ArSH gave binuclear [M₂(¦Ì-SAr)₂(CO)₂(PPh₃)₂] (M = Rh, SAr = SC₆H₂Prⁱ₃-2,4,6 or SC₆H₃Me₂-2,6) and mononuclear [M(SAr)(CO)(PPh₃)₂] (M = Rh or Ir, SAr = SC₆H₃Cl₂-2,6 or SC₆H₄SiPh₃-2; M = Ir, SAr = SC₆H₂Prⁱ₃-2,4,6 or SC₆H₃Me₂-2,6). The crystal structure of [Rh₂(¦Ì-SC₆H₃Prⁱ₃-2,4,6)₂(CO)₂(PPh₃)₂] showed a binuclear thiolate bridged core while that of [Ir(SC₆H₃Cl₂-2,6)(CO)(PPh₃)₂] revealed a conventional square planar geometry with trans PPh₃ ligands. Three Rh complexes are efficient catalysts for the hydroformylation of hept-1-ene under mild conditions with good selectivity for linear aldehyde for SAr = SC₆H₄SiPh₃-2. Reaction of [MF(CO)(PPh₃)₂] with phosphinothiolate proligands PSH gave monomeric [M(PS)(CO)(PPh₃)₂] (M = Rh or Ir; PS = SC₆H₄PPh₂-2 or S(CH₂)₃PPh₂; M = Rh, PS = SCH₂CH₂PPh₂ or SCHMeCH₂PPh₂). [Rh(SC₆H₄PPh₂-2)(CO)(PPh₃)] reacted reversibly with protons (HBF₄) to give the dimeric dication [Rh₂(¦Ì-SC₆H₄PPh₂-2)₂(CO)₂(PPh₃)₂]²⁺, shown by a crystal structure be a thiolate bridged dimer with an Rh-Rh bond and pseudo-octahedral geometry about each Rh^III. Electrophilic attack by [Me₃O][BF₄] on [Rh(SC₆H₄PPh₂-2)(CO)(PPh₃)] occurred at S to give [Rh(MeSC₆H₄PPh₂-2)(CO)(PPh₃)]⁺ and excess of MeI gave [Rh₂I₆(MeSC₆H₄PPh₂-2)₂], with octahedral Rh^III linked by a double iodide bridge. Attack at S also occurred in [Rh(SC₆H₄PPh₂-2)(CO)(PPh₃)] with I(CH₂)₃I and ICH₂CO₂H to give [Rh(2-Ph₂PC₆H₄SCH₂CH₂CH₂)(CO)(PPh₃)] and [RhI₂(2-Ph₂PC₆H₄SCH₂CO₂)(PPh₃)], resp. [RhI₃(CO)(PPh₃)₂] was a byproduct and shown by a crystal structure to have a pseudo-octahedral structure with trans-PPh₃ ligands.

Dalton 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, Related Products of catalysis-chemistry.

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

Wales, Steven M. published the artcileReversible Capture and Release of a Ligand Mediated by a Long-Range Relayed Polarity Switch in a Urea Oligomer, Computed Properties of 140-28-3, the publication is Journal of the American Chemical Society (2022), 144(7), 2841-2846, database is CAplus and MEDLINE.

Ethylene-bridged oligoureas characterized by a continuous, switchable chain of hydrogen bonds and carrying a binding site (an N,N’-disubstituted urea) for a hydrogen-bond-accepting ligand (a phosphine oxide) were synthesized. These oligomers show stronger ligand binding when the binding site is located at the hydrogen-bond-donating terminus than when the same binding site is at the hydrogen-bond-accepting terminus. An acidic group at the terminus remote from the binding site allows hydrogen bond polarity, and hence ligand binding ability, to be controlled remotely by a deprotonation/reprotonation cycle. Addition of base induces a remote conformational change that is relayed through up to five urea linkages, reducing the ability of the binding site to retain an intermol. association to its ligand, which is consequently released into solution Reprotonation returns the polarity of the oligomer to its original directionality, restoring the function of the remote binding site, which consequently recaptures the ligand. This is the first example of a synthetic mol. structure that relays intermol. binding information, and these “dynamic foldamer” structures are prototypes of components for chem. systems capable of controlling chem. function from a distance.

Journal of the American Chemical Society 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 C21H24O8, Computed Properties of 140-28-3.

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