Tag: M.W=200-250

Purohit, D. M. published the artcileSynthesis of 1,1,1-trichloro-2-(2′,4′-dichloro-5′-carboxymethoxyphenyl)-2-(carboxyaryl/carboxymethoxyaryl)ethanes as possible antimicrobial agents, Recommanded Product: 2,2-(1,2-Phenylenebis(oxy))diacetic acid, the publication is Indian Journal of Heterocyclic Chemistry (1999), 8(3), 209-212, database is CAplus.

The title compounds I (R = HO₂C, HO₂CCH:CH, HO₂CCH₂, HO₂CCH₂O; R¹ = H, HO₂C, Me, Cl, MeO, NO₂, HO₂CCH₂O) were prepared by reaction of 2,4-Cl₂C₆H₃OCH₂CO₂H with chloral hydrate in the presence of concentrated H₂SO₄ to afford the (trichloroethyl)phenoxyacetic acid II. II reacted with RR¹C₆H₄ in the presence of a catalytic amount of concentrated H₂SO₄ to give I. All products were screened for antimicrobial activity. The mol. structures of the products were supported by IR, PMR, and mass spectroscopy and elemental anal.

Indian Journal of Heterocyclic 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, Recommanded Product: 2,2-(1,2-Phenylenebis(oxy))diacetic acid.

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

Purohit, D. M. published the artcileSynthesis of 1,1,1-trichloro-2,2-bis(carboxymethoxyaryl)ethanes as potential antimicrobial and insecticidal agents, HPLC of Formula: 5411-14-3, the publication is Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry (1999), 38B(5), 618-622, database is CAplus.

Some new 1,1,1-trichloro-2,2-bis(carboxymethoxyaryl)ethanes have been synthesized by treating aryloxyacetic acids (2 mol) with chloral hydrate (1 mol) in the presence of a catalytic amount of concentrated sulfuric acid. The aryloxyacetic acids are prepared by reaction of phenols with chloroacetic acid in the presence of aqueous sodium hydroxide. The antimicrobial activities of these compounds have been assayed against Gram pos. and Gram neg. bacteria and fungi; insecticidal activities have been examined against the rice leaf hopper.

Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal 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, HPLC of Formula: 5411-14-3.

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

Roeder, F. published the artcileTHz generation by optical rectification of intense near-infrared pulses in organic crystal BNA, Quality Control of 201157-13-3, the publication is Optics Express (2020), 28(24), 36274-36285, database is CAplus and MEDLINE.

Generation of terahertz radiation by optical rectification of intense near-IR laser pulses in N-benzyl-2-methyl-4-nitroaniline (BNA) is investigated in detail by carrying out a complete characterization of the terahertz radiation. We studied the scaling of THz yield with pump pulse repetition rate and fluence which enabled us to predict the optimal operating conditions for BNA crystals at room temperature for 800 nm pump wavelength. Furthermore, recording the transmitted laser spectrum allowed us to calculate the nonlinear refractive index of BNA at 800 nm.

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, Quality Control of 201157-13-3.

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

Pieber, Bartholomaeus published the artcileContinuous heterogeneous photocatalysis in serial micro-batch reactors, SDS of cas: 1798-04-5, the publication is Angewandte Chemie, International Edition (2018), 57(31), 9976-9979, database is CAplus and MEDLINE.

Solid reagents, leaching catalysts, and heterogeneous photocatalysts are commonly employed in batch processes but are ill-suited for continuous-flow chem. Heterogeneous catalysts for thermal reactions are typically used in packed-bed reactors, which cannot be penetrated by light and thus are not suitable for photocatalytic reactions involving solids. We demonstrate that serial micro-batch reactors (SMBRs) allow for the continuous utilization of solid materials together with liquids and gases in flow. This technol. was utilized to develop selective and efficient fluorination reactions using a modified graphitic carbon nitride heterogeneous catalyst instead of costly homogeneous metal polypyridyl complexes. The merger of this inexpensive, recyclable catalyst and the SMBR approach enables sustainable and scalable photocatalysis.

Angewandte Chemie, International Edition 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, SDS of cas: 1798-04-5.

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

Reddy, Raju Jannapu published the artcileMetal-free, highly regioselective sulfonylation of NH-1,2,3-triazoles with sodium sulfinates and thiosulfonates, Recommanded Product: 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, the publication is Tetrahedron Letters (2018), 59(21), 2014-2017, database is CAplus.

A convenient and metal-free protocol for the highly regioselective sulfonylation of NH-1,2,3-triazoles such as 4-methyl-5-phenyl-2H-1,2,3-triazole, 4-furan-2-yl-5-methyl-2H-[1,2,3]triazole, 4-phenyl-2H-1,2,3-triazole, etc. was described. A range of readily accessible NH-1,2,3-triazoles was sulfonylated with various aryl sulfinates such as sodium p-toluenesulfinate, sodium 4-bromobenzenesulfinate, sodium benzenesulfinate, sodium 4-chlorobenzenesulfinate in the presence of mol. iodine. The scope was extended to thiosulfonates such as S-Ph 4-Me benzenesulfonothioate, S-Ph benzenesulfonothioate as an efficient sulfonylating agent and nitrochromene derived triazoles which were also explored for selective N-sulfonylation. A variety of synthetically viable N2-sulfonyl triazoles e.g., I was obtained in moderate to high yields with excellent regioselectivities via N-S bond construction under mild reaction conditions.

Tetrahedron Letters published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C10H11NO4, Recommanded Product: 1,2-Dimethoxy-4-(2-nitrovinyl)benzene.

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

Balachandra, Biguvu published the artcileIodine catalyzed one-pot synthesis of highly substituted N-methyl pyrroles via [3 + 2] annulation and their in vitro evaluation as antibacterial agents, Safety of 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, the publication is RSC Advances (2015), 5(79), 64781-64789, database is CAplus.

A class of highly substituted pyrroles I [R = 2-F, 3-Cl, 4-OCH₃, etc.] have been synthesized via a simple, fast, and efficient method using environmentally friendly iodine catalyzed [3 + 2] annulation. N-Methyl-N-[(E)-1-(methylsulfanyl)-2-nitro-1-ethenyl]amine (NMSM) and U+03B2-nitrostyrenes underwent cycloaddition to afford the desired products I in excellent yields under solvent and metal free conditions. All the pyrrole derivatives I were evaluated for their in vitro anti-bacterial activity. Among the synthesized pyrrole derivatives I [R = H, 3-OCH₃, 3,4,5-(OCH₃)₃, 4-F, 4-Cl, 2-Br, 3-OH, 4-NO₂, 1,2-C₄H₄] displayed good inhibitory properties against a panel of Gram pos. and neg. infectious pathogens.

RSC Advances published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C10H11NO4, Safety of 1,2-Dimethoxy-4-(2-nitrovinyl)benzene.

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

Kaur, Gurpreet published the artcileInvestigating mixed micellar system of dodecylammonium acetate for solubilisation of curcumin, Application In Synthesis of 2016-56-0, the publication is Science of Advanced Materials (2015), 7(8), 1546-1555, database is CAplus.

The present work deals with the anal. of aggregation behavior of cationic surfactant dodecylammonium acetate (DAA) (in single and mixed micellar formulations). Thermodn. parameters reveal that the micellization of DAA is predominantly entropy driven. In mixed micellar system of DAA with dodecyltrimethylammonium bromide (DTAB), the synergistic effect dominates between two cationic surfactants mainly due to the dominance of chain-chain van der Waal interactions. Further, the micellar system has been evaluated for solubilization of curcumin. The solubilization locus, encapsulation efficiency and in vitro release mechanism have been evaluated. The distribution coefficient, binding constant, Stern-Volmer quenching constant, along with the free energy of transfer of curcumin in mixed micelles have been assessed fluorometrically. The results obtained indicate that the mixed cationic micellar system is stable and can prove to be a thriving vector for water insoluble curcumin in future.

Science of Advanced Materials 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, Application In Synthesis of 2016-56-0.

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

Chinn, Alex J. published the artcilePhosphine/Photoredox Catalyzed Anti-Markovnikov Hydroamination of Olefins with Primary Sulfonamides via ¦Á-Scission from Phosphoranyl Radicals, Recommanded Product: 2,4,6-Triisopropylbenzenethiol, the publication is Journal of the American Chemical Society (2021), 143(43), 18331-18338, database is CAplus and MEDLINE.

A dual phosphine and photoredox catalytic system that enables direct formation of sulfonamidyl radicals from primary sulfonamides RSO₂NH₂ (R = 4-tert-butylphenyl, Me, cyclopropyl, thiophen-2-yl, etc.) was reported. Mechanistic investigations support that the N-centered radical is generated via ¦Á-scission of the P-N bond of a phosphoranyl radical intermediate, formed by sulfonamide nucleophilic addition to a phosphine radical cation. As compared to the recently well-explored ¦Â-scission chem. of phosphoranyl radicals, this strategy is applicable to activation of N-based nucleophiles and is catalytic in phosphine. The application of this activation strategy to an intermol. anti-Markovnikov hydroamination of unactivated olefins (such as cyclohexene, hex-1-ene, styrene, etc.) with primary sulfonamides RSO₂NH₂ is highlighted. A range of structurally diverse secondary sulfonamides [such as 4-(tert-butyl)-N-hexylbenzenesulfonamide, 4-(tert-butyl)-N-(3-phenylpropyl)benzenesulfonamide, 2-chloro-N-cyclohexylbenzenesulfonamide, etc.] can be prepared in good to excellent yields under mild conditions.

Journal of the American Chemical Society 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, Recommanded Product: 2,4,6-Triisopropylbenzenethiol.

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

Bernerd, Cyril published the artcileQuadratic nonlinear optical properties of the organic N-benzyl-2-methyl-4-nitroaniline (BNA) biaxial crystal, Formula: C14H14N2O2, the publication is Optics Letters (2018), 43(8), 1818-1821, database is CAplus and MEDLINE.

We performed the direct measurement of second harmonic generation and sum frequency generation phase-matching directions in the organic N-benzyl-2-methyl-4-nitroaniline crystal over its visible and near-IR transparency range. The fit of these data allowed us to refine the Sellmeier equations of the three principal refractive indexes in this range. With these equations, we improved the calculated tuning curves of terahertz emission from a phase-matched difference frequency process. We also determined the absolute magnitude of the d₂₄ nonlinear coefficient

Optics Letters 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, Formula: C14H14N2O2.

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

Burow, David published the artcileModifications to the silver physical developer, Related Products of catalysis-chemistry, the publication is Journal of Forensic Sciences (2003), 48(5), 1094-1100, database is CAplus and MEDLINE.

The silver phys. developer is currently the most successful reagent used for visualizing the water-insoluble components (e.g., lipids) of latent prints on porous surfaces. It is normally used after the amino acid visualizing reagents (e.g., ninhydrin and DFO) are used. This work found that the performance of the current formulation of silver phys. developer is strongly reduced when the water used is changed from the usual distilled water to the more purified reverse osmosis/deionized (RO/DI) water. Based on numerous experiments involving the systematic variation of the component concentrations, the performance was restored and even improved by reducing the concentration of all the components (except that of the ferric salt) and by including malic acid in the formulation. These modifications resulted in a new silver phys. developer formulation that performs as well as or better than the current formulation and is less expensive to make.

Journal of Forensic Sciences 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