Tag: M.W=100-150

Li, Lingzi published the artcilePhotochemical electrocyclization and leaving group expulsion with a naphthothiophene-2-carboxanilide linked to a chromophore, Recommanded Product: 4-Methoxy-N-methylaniline, the main research area is photochem electrocyclization leaving group expulsion chromophore naphthothiophene carboxanilide.

A naphthiothiophene-2-carboxanilide bearing a leaving group at the C-3 position undergoes efficient electrocyclic ring closure and leaving group expulsion upon direct photolysis. The reaction occurs in the triplet excited state and can be sensitized by thioxanthone. Thioxanthone as chromophore can also be covalently attached to amide nitrogen by a trimethylene linker, and the photoreaction is equally efficient. Quenching studies show that the triplet excitation is localized primarily on the naphthothiophene moiety, due to rapid exothermic energy transfer from the thioxanthone chromophore. Acriflavin dye is capable of sensitizing the photoreaction at 450 nm, but the quantum yield is low in this case.

Tetrahedron published new progress about Absorption spectra. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Recommanded Product: 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Bukhtiyarova, M. V. published the artcileN-Methylation of p-Anisidine on the Catalysts Based on Cu-Containing Layered Double Hydroxides, Product Details of C8H11NO, the main research area is anisidine methylation copper layered double hydroxide catalyst.

Cu-containing layered double hydroxides with different Cu : Al ratios are synthesized by co-precipitation using a mixture of hydroxide and sodium carbonate as a precipitation agent. The influence of the precipitation agent concentration on the formation of the hydrotalcite phase was studied by thermal anal. and X-ray diffraction. The surface of the obtained samples after calcination at 450°C and their subsequent reduction at 300°C in hydrogen, was characterized by XPS and transmission electron microscopy. The synthesized catalysts were tested in the reaction of N-methylation of p-anisidine with methanol in an autoclave reactor to produce N-methyl-p-anisidine. The influence of the Cu : Al ratio in them on the catalytic activity and selectivity was studied.

Kinetics and Catalysis published new progress about Lattice parameters. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Product Details of C8H11NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Suleymanov, Abdusalom A. published the artcileSynthesis of Tetraarylethene Luminogens by C-H Vinylation of Aromatic Compounds with Triazenes, HPLC of Formula: 151-10-0, the main research area is carbon hydrogen bond vinylation aromatic compound triazene; synthesis tetraarylethene luminogen; aggregation; fluorescence; synthetic methods; tetraralyethenes; vinylation.

Tetraarylethenes are obtained by acid-induced coupling of vinyl triazenes with aromatic compounds This new C-H activation route for the synthesis of aggregation-induced emission luminogens is simple, fast, and versatile. It allows the direct grafting of triarylethenyl groups onto a variety of aromatic compounds, including heterocycles, supramol. hosts, biol. relevant mols., and com. polymers.

Angewandte Chemie, International Edition published new progress about C-H bond activation. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, HPLC of Formula: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Hui published the artcileAnalysis of dissolved and colloidal substances in old corrugated containers’ whitewater and dissolved substances’ impact on colloidal substances’ stability, Product Details of C8H10O2, the main research area is corrugated container whitewater dissolved colloidal substance analysis; dissolved colloidal substances aging corrugated container whitewater.

The physicochem. properties of dissolved and colloidal substances (DCS) in the old corrugated containers’ (OCC) whitewater were studied. Then, the colloidal substances (CS) were separated from dissolved substances (DS) and the effect of inorganic salts on the stability of CS (not DCS) was studied for the first time. The results showed that many DCS aggregated and attached to the fiber surface when pulping. The primary sources were resin, lignin, adhesives, coating fixatives, and fillers. The colloidal stability of DCS and solids of whitewater differed because the DCS contained less filler. Both Ca2+ and Na+ can affect the stability of CS, but Ca2+ led to more CS instability and aggregated into larger flocculant precipitates The surprising discovery in the experiment was that when Ca2+ and Na+ were added together, the instability degree of the system was between the addition of Ca2+ and Na+ alone. Ca2+ played a dominant role in affecting the stability of CS, and Na+ competed for adsorption sites.

BioResources published new progress about Colloidal stability. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Product Details of C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Verevkin, Sergey P. published the artcileWeaving a Network of Reliable Thermochemistry around Lignin Building Blocks: Methoxy-Phenols and Methoxy-Benzaldehydes, Application of 1,3-Dimethoxybenzene, the main research area is thermochem lignin methoxyphenol methoxybenzaldehyde sublimation vaporization.

The methoxy, hydroxy, and carbonyl substituted benzenes are the simplest fragments from the lignin separation feedstocks. Extensive exptl. thermochem. studies of these compounds were carried out, including combustion calorimetry, vapor pressure measurements and differential scanning calorimetry. We have collected available primary exptl. results on enthalpies of formation and vapor pressures as well as on phase transitions liquid-gas, liquid-solid, crystal-liquid These data were evaluated using empirical, semiempirical and quantum chem. methods. The consistent sets of evaluated thermodn. data were used to design the method for predicting enthalpies of vaporization and enthalpies of formation of di- and trisubstituted benzenes. It is expected that parameters and pairwise interactions will be transferable to predict the thermochem. properties of poly methoxy-substituted and poly hydroxy-substituted benzenes that appear in reaction products of lignin transformations in the value-adding chems. and materials. Comparison of the Exptl. (ΔfHmo(g)exp) and Theor. (ΔfHmo(g)theor) Standard Molar Gas-Phase Enthalpies of Formation Substituted Benzenes at T = 298.15 K and p° = 0.1 MPa (in kJ·mol-1)compoundΔfHmo(g)expG4G4G3MP2G3MP2M06/QZ4PM06/QZ4PΔfHmo(g)theorExp. ATWBRATWBRATWBRaverage2,3-dimethoxyphenol-393.0 ± 2.1-389.5-390.2-390.2-391.4—390.3 ± 2.42,4-dimethoxyphenol-398.3 ± 2.8-397.2-397.9-397.5-398.6-394.4-396.7-397.1 ± 2.42,5-dimethoxyphenol–397.8-398.5-397.8-398.9-395.3-397.6-396.9 ± 2.42,6-dimethoxyphenol-384.8 ± 1.9-388.9-389.5-388.8-390.0-386.6-388.7-388.9 ± 2.03,4-dimethoxyphenol-380.9 ± 3.3-380.5-381.2-379.9-381.0-379.2-381.1-380.5 ± 2.03,5-dimethoxyphenol-401.2 ± 1.7-402.0-402.7-401.4-402.5-401.7-404.2-402.4 ± 2.42,3-dimethoxybenzaldehyde–323.4-323.9-324.0-325.5-319.2-318.0-322.8 ± 2.82,4-dimethoxybenzaldehyde-346.9 ± 1.8-347.3-347.8-347.4-348.7-350.3-349.9-348.6 ± 2.02,5-dimethoxybenzaldehyde-338.1 ± 2.2-337.5-338.0-337.9-339.2-339.0-338.3-338.3 ± 2.12,6-dimethoxybenzaldehyde–323.1-323.6-322.6-324.1-325.9-324.9-324.0 ± 2.03,4-dimethoxybenzaldehyde-343.1 ± 2.4-341.2-341.7-340.6-342.0-344.0-343.5-342.2 ± 2.23,5-dimethoxybenzaldehyde–349.6-350.1-349.3-350.6-350.8-350.5-350.2 ± 2.01,2-dimethoxybenzene-206.0 ± 3.1-209.4-211.3-209.1-211.4-207.8-210.9-210.0 ± 2.41,3-dimethoxybenzene-223.6 ± 1.9-224.2-226.0-223.8-226.0-222.9-226.4-224.8 ± 2.61,4-dimethoxybenzene-216.2 ± 0.9-216.0-217.8-216.1-218.4-214.8-218.1-216.9 ± 2.42-methoxyphenol-247.3 ± 1.8-247.3-249.4-247.9-250.1-244.0-248.2-247.8 ± 3.63-methoxyphenol-241.2 ± 1.2-244.8-247.0-244.5-246.7-243.3-247.5-245.6 ± 2.84-methoxyphenol-234.3 ± 1.3-236.2-238.4-236.3-238.6-234.4-238.3-237.0 ± 2.82-methoxy-benzaldehyde-190.1 ± 2.7-185.7-184.3-185.9-184.8-185.2 ± 2.43-methoxy-ben. The uncertainties are given as the twice standard deviation. Calculated by the G4, G3MP2, or M06/QZ4P method according to the standard atomization procedure and corrected with empirical equations specific for each method (see text). Calculated by the G4, G3MP2 or M06/QZ4P method with help of reactions or using exptl. ΔfHmo(g)-values for the reaction participants (see Table S7). Numerical data for reactions and are given in Tables S11 and S12 in ESI. Numerical data for dimethoxy-benzenes (R-21), methoxy-phenols (R-22), and methoxy-benzaldehydes (R-23) are also given in Tables S13-S15 in ESI.

Industrial & Engineering Chemistry Research published new progress about Combustion enthalpy. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Application of 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ma, Yun published the artcileReactions of Sodium Diisopropylamide: Liquid-Phase and Solid-Liquid Phase-Transfer Catalysis by N,N,N’,N”,N”-Pentamethyldiethylenetriamine, Product Details of C8H10O2, the main research area is Liquid Phase Solid Liquid PhaseTransfer Catalysis pentamethyldiethylenetriamine; Reactions Sodium Diisopropylamide.

Sodium diisopropylamide (NaDA) in dimethylethylamine (DMEA) and DMEA-hydrocarbon mixtures with added N,N,N’,N”,N”-pentamethyldiethylene triamine (PMDTA) reacts with alkyl halides, epoxides, hydrazones, arenes, alkenes, and allyl ethers. Comparisons of PMDTA with N,N,N’,N’-tetramethylethylenediamine (TMEDA) accompanied by detailed rate and computational studies reveal the importance of the trifunctionality and κ2-κ3 hemilability. Rate studies show exclusively monomer-based reactions of 2-bromooctane, cyclooctene oxide, and dimethylresorcinol. Catalysis with 10 mol % PMDTA shows up to >30-fold accelerations (kcat > 300) with no evidence of inhibition over 10 turnovers. Solid-liquid phase-transfer catalysis (SLPTC) is explored as a means to optimize the catalysis as well as explore the merits of heterogeneous reaction conditions.

Journal of the American Chemical Society published new progress about Dehydrohalogenation. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Product Details of C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Gao, Yang published the artcilePractical synthesis of 3-aryl anthranils via an electrophilic aromatic substitution strategy, HPLC of Formula: 151-10-0, the main research area is aryl anthranil preparation chemoselective regioselective green chem; anthranil arene formal oxidative cross coupling triflic anhydride.

A practical route for the synthesis of valuable 3-aryl anthranils from readily available anthranils and simple arenes by using the classical electrophilic aromatic substitution (EAS) strategy was reported. This transformation goes through an electrophilic substitution and rearomatisation sequence by employing Tf2O as an effective activator. A wide range of arenes were compatible in this transformation, delivering various structurally diversified 3-aryl anthranils in good yields and high regioselectivity. In addition, a variety of readily available feedstocks such as olefins, alkenyl triflates, silyl enolethers, carbonyl compounds, thiophenols and thiols could also participate in the reaction to achieve the C3 alkenylation, alkylation and thioetherification of anthranils. Of note, the synthesized 3-aryl anthranils proved to be a highly robust platform to access a series of biol. active compounds, drug derivatives and organic optoelectronic materials.

Chemical Science published new progress about Absorption spectra. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, HPLC of Formula: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ojah, Emmanuel Onah published the artcileChemical Compositions, Antioxidant and Anti-diabetic Activities of Root Wood and Root Bark Essential Oils from Pterocarpus soyauxii TAUB., SDS of cas: 151-10-0, the main research area is Pterocarpus root bark essential oil antioxidant antidiabetic agent.

The chem. composition of essential oils (EOs) isolated by hydrodistillation from Pterocarpus soyauxii Taub. root wood and root bark were determined for the first time by GC/MS anal. The EOs gave a percentage yield (weight/weight) of 0.34% and 0.31% for root wood and root bark resp. A total of 60 compounds accounting for 86.1% of the root wood EO composition were identified with monoterpenes (45.4%) and sesquiterpenes (14.7%) as predominant constituents. Root bark EO gave 53 identified constituents which make up about 78.5% of the EO dominated by non-terpenes (23.4%) and alkanes (14.1%). The EOs are good sources of limonene (16.9%), γ-terpinene (9.8%) and p-cymene (6.70%). The anti-diabetic (α-amylase and α-glucosidase models) and antioxidant activities (DPPH and H2O2 models) of EOs were evaluated in comparison with standard drugs. Alpha-amylase inhibition gave IC50 values (mg/mL) of 0.0493 and 0.0471 for root wood and root bark EOs resp., compared to acarbose the standard anti-diabetic drug (0.0401) while α-glucosidase assay gave IC50 values (mg/mL) of 0.0517 and 0.0486 for root wood and root bark EOs resp., compared with acarbose (0.0418). In the DPPH antioxidant assay, root bark EO showed higher activity (0.157 mg/mL) compared to root wood EO (0.159 mg/mL) while Root wood and root bark EOs had IC50 values (mg/mL) of 0.157 and 0.171 resp. using the H2O2 model. Results revealed the presence of chem. constituents in the EOs which could be responsible for activities expressed by the plant.

Journal of Essential Oil-Bearing Plants published new progress about Antidiabetic agents. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, SDS of cas: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lee, Shih-Yi published the artcileA novel isoquinoline derivative exhibits anti-inflammatory properties and improves the outcomes of endotoxemia, Application In Synthesis of 151-10-0, the main research area is isoquinoline derivative anti inflammatory endotoxemia septic cardiomyopathy; Cytokine; Endotoxemia; Nuclear factor kappa-B; Septic cardiomyopathy.

Sepsis initiates an inflammatory response that causes widespread injury, and candidates for related myocardial depressant factors include cytokines and nitric oxide (NO). Nuclear factor kappa-B (NF-κB) stimulated by toll-like receptor 4 activation in sepsis mediates the transcription of multiple proinflammatory genes. These inflammatory mediators can cause myocardial dysfunction, which may deteriorate sepsis outcomes. To address this risk, we investigated the potential beneficial effects of a novel isoquinolines derivative, CYY054c, in LPS-induced inflammatory response leading to endotoxemia. The effects of CYY054c on cytokine and inflammatory-related protein production were evaluated in lipopolysaccharide (LPS)-stimulated macrophages. To determine whether CYY054c alleviates inflammatory storm-induced myocardial dysfunction in vivo, LPS was injected in rats, and cardiac function was measured by a pressure-volume loop. CYY054c inhibited LPS-induced NF-κB expression in macrophages and reduced the release of tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6), as well as the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). In the animal studies, CYY054c alleviated LPS-upregulated plasma TNF-α, IL-1β, IL-6, and NO concentrations, as well as cardiac monocyte chemotactic protein-1, iNOS, and COX-2 expression in rats, contributing to the improvement of cardiac function during endotoxemia. The reduction of NF-κB-mediated inflammatory mediators and the maintenance of hemodynamic performance by CYY054c improved the outcomes during endotoxemia. CYY054c may be a potential therapeutic agent for sepsis.

Pharmacological Reports published new progress about Cardiac contraction. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Application In Synthesis of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Yang published the artcileMonitoring the volatile composition and change in different geographical regions and harvest time of Chinese truffle (Tuber indicum Cooke & Massee), SDS of cas: 151-10-0, the main research area is Tuber hexanal flavor texture volatile composition.

Truffle is ectomycorrhizal ascomycota and produces hypogeous edible ascocarps, which was globally acknowledged as one of the most expensive food in the gastronomy market due to its unique flavor and texture, good culinary properties as well as health value. The volatile organic compounds (VOCs) are the important contributor for truffle unique flavor. In this study, the VOCs of the Chinese black truffle T. indicum ascocarps from seven different geog. regions and five harvest time in China were analyzed using gas chromatog.-mass spectrometry (GC-MS). Total 589 compounds were analyzed and 1-octen-3-ol had the highest content in all analyzed samples. Discriminant anal. was carried out on the VOCs to build the models which can determine T. indicum collection region and time authenticity. This study clearly illustrated the characteristics of the VOCs profile of Chinese black truffle in relation to geog. regions and harvest time and provide profitable information for the scientific collection, conservation and utilization of the precious truffle resources in China in future.

European Food Research and Technology published new progress about Castanea mollissima. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, SDS of cas: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem