Category: isoquinoline

Wols, B. A. published the artcileDegradation of pharmaceuticals in UV (LP)/H2O2 reactors simulated by means of kinetic modeling and computational fluid dynamics (CFD), Synthetic Route of 117-96-4, the main research area is hydrogen peroxide reactor kinetic model CFD UV pharmaceutical degradation; Advanced oxidation process; CFD; Modelling; Pharmaceuticals; UV; Water treatment.

UV/H2O2 treatment is a well-established technique to degrade organic micropollutants. A CFD model in combination with an advanced kinetic model is presented to predict the degradation of organic micropollutants in UV (LP)/H2O2 reactors, accounting for the hydraulics, fluence rate, complex (photo)chem. reactions in the water matrix and the interactions between these processes. The model incorporates compound degradation by means of direct UV photolysis, OH radical and carbonate radical reactions. Measurements of pharmaceutical degradations in pilot-scale UV/H2O2 reactors are presented under different operating conditions. A comparison between measured and modeled degradation for a group of 35 pharmaceuticals resulted in good model predictions for most of the compounds The research also shows that the degradation of organic micropollutants can be dependent on temperature, which is relevant for full-scale installations that are operated at different temperatures over the year.

Water Research published new progress about Computational fluid dynamics. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Synthetic Route of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wols, B. A. published the artcileDesign aspects of UV/H2O2 reactors, Synthetic Route of 117-96-4, the main research area is design UV hydrogen peroxide reactor.

The design of UV/H2O2 reactors was studied. An anal. approach was followed to provide characteristics (maximum fluence and maximum possible degradation) for an ideal system. An efficiency parameter was introduced that relates the actual performance of a reactor with the best possible performance for a reactor with a certain water flow, lamp power and UV transmittance. From the anal. model, several design parameters were studied. The desired treatment level influences the choice of a design parameter, as the fluence distribution becomes less important at lower desired treatment levels. As the desired degradation levels in UV/H2O2 applications are lower than the desired inactivation levels for UV disinfection, a UV/H2O2 reactor may be designed with a larger water layer depth than UV disinfection reactors. Manipulating the velocity profile towards a profile that mimics the fluence rate profile is beneficial, as well as increasing mixing. Increasing the number of lamps (while the total energy consumption remains the same) is beneficial, as it results in a more uniform fluence rate profile. Enlarging the quartz sleeve has limited effect. Changing the distribution of H2O2 in the reactor also has limited effects. Using the design parameters, new UV/H2O2 reactor types were developed with CFD simulations and tested exptl. An increase in log degradation ≤30% was demonstrated by the improved reactor design.

Chemical Engineering Science published new progress about Computational fluid dynamics. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Synthetic Route of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Young, Claire M. published the artcileEvaluating aryl esters as bench-stable C(1)-ammonium enolate precursors in catalytic, enantioselective Michael addition-lactonizations, Product Details of C9H10O3, the main research area is keto ester preparation enantioselective diastereoselective; trifluoromethyl enone trichlorophenyl ester Michael lactonization methanolysis isothiourea catalyst; dihydropyranone preparation enantioselective diastereoselective; trichlorophenyl ester trifluoromethyl enone Michael addition lactonization isothiourea catalyst.

An evaluation of a range of aryl, alkyl and vinyl esters as prospective C(1)-ammonium enolate precursors in enantioselective Michael addition-lactonization processes with (E)-trifluoromethylenones using isothiourea catalysis was reported. Electron deficient aryl esters were required for reactivity, with 2,4,6-trichlorophenyl esters providing optimal product yields. Catalyst screening showed that tetramisole was the most effective isothiourea catalyst, giving the desired dihydropyranone products I [Ar = Ph, 4-MeC6H4, 4-F3CC6H4; Ar1 = Ph] in excellent yield and stereoselectivity (up to 90 : 10 dr and 98 : 2 er). The scope and limitations of this process were evaluated, with a range of keto ester products II [Ar1 = Ph, 2-furyl, 4-MeC6H4, 3-MeOC6H4, 4-BrC6H4] being generated after ring-opening with MeOH to give stereodefined dihydropyranones with excellent stereocontrol (10 examples, typically ∼90 : 10 dr and >95 : 5 er).

Organic & Biomolecular Chemistry published new progress about Diastereoselective synthesis. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tan, Chen published the artcilePractical Synthesis of Phosphinic Amides/Phosphoramidates through Catalytic Oxidative Coupling of Amines and P(O)-H Compounds, Category: isoquinoline, the main research area is phosphinic amide phosphoramidate preparation; catalytic oxidative coupling amine organophosphorus compound green chem stereoselective; cross-coupling; late-stage functionalization; phosphinic amides; phosphoramidates; phosphorus.

Herein, we report a highly efficient ZnI2-triggered oxidative cross-coupling reaction of P(O)-H compounds and amines. This operationally simple protocol provides unprecedented generic access to phosphinic amides/phosphoramidate derivatives in good yields and short reaction time. Besides, the reaction proceeds under mild conditions, which avoids the use of hazardous reagents, and is applicable to scale-up syntheses as well as late-stage functionalization of drug mols. The stereospecific coupling is also achieved from readily available optically enriched P(O)-H compounds

Chemistry – A European Journal published new progress about Diastereoselective synthesis. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Filatov, Vadim E. published the artcilecis-Diastereoselective Synthesis of Spirooxindolo-β-Lactams by Staudinger Cycloaddition with TsCl as Activating Co-reagent, Computed Properties of 104-01-8, the main research area is spirooxindolo beta lactam preparation cis diastereoselective Staudinger cycloaddition TsCl.

A convenient and versatile one-pot method for synthesis of 1,3-bis-aryl spirooxindolo-β-lactams from isatin Schiff bases and substituted phenylacetic acids using ketene-imine cycloaddition reaction with TsCl for a ketene generation has been developed. The reaction procedure does not require absolute solvents and unstable starting reagents. The studied reactions lead to cis-diastereoselective β-lactam formation for all tested phenylacetic acids except 4-MeOC6H4CH2COOH. An increase of trans-diastereomers yields with increasing temperature and solvent polarity was demonstrated.

ACS Omega published new progress about Diastereoselective synthesis. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Computed Properties of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Viayna, Antonio published the artcileHolistic approach to anti-knock agents: A high-throughput screening of aniline-like compounds, Synthetic Route of 5961-59-1, the main research area is aniline compound antiknock fuel additive library screening.

The increasing concerns about greenhouse gas emissions are encouraging the search for efficient combustion technologies for transportation. A valuable strategy consists of tailoring the properties of fuels through addition of additives that might increase the octane number subject to the classification, labeling and packaging regulation of fuel quality. In this context, we present an integrated approach involving a high-throughput screening that relies on selected physicochem. factors of aniline-like compounds, measurements of structural resemblance and susceptibility to participate in chem. reactions with radical species, in conjunction with production viability as well as environmental and toxicol. risks. This process led to a final set of representative compounds that were chosen to explore their behavior as anti-knock additives. The suitability of these compounds was determined through assays performed to determine the impact on fuel volatility and RON booster efficiency in conjunction with a critical assessment of their eco/toxicol. risk estimated by means of a safety index. This holistic strategy led to the identification of N-methyl-p-anisidine, N’,N’-diethyl-2-methyl-p-phenylenediamine and N-nitroso-diphenylamine as promising anti-knock additives. This approach is proposed as an alternative strategy to the unsupervised exptl. screening of fuel additives.

Fuel published new progress about Gasoline antiknock additives. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Synthetic Route of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Aegurla, Balakrishna published the artcileDehydrative C- and S-Alkylation: Access to Highly Substituted 1-Sulfonylpropanes, SDS of cas: 151-10-0, the main research area is aryl sulfonylpropane preparation; hydroxysulfone arene thiophenol dehydrative alkylation.

A dehydrative C- and S-alkylation procedure by nucleophilic substitution of γ-hydroxysulfones with arenes and thiophenols is reported. This study represents an elegant and ecol. concept to construct C-C and C-S bonds leading to unsym. 1,1- and 3,3-branched propanes. The γ-hydroxysulfones underwent BF3.OEt2-mediated dehydrative arylation and thiolation at room temperature and elimination at 40°. The nucleophile attack occurred on the less hindered side of a planar benzylic carbocation to furnish the title compounds with good diastereoselectivity.

Asian Journal of Organic Chemistry published new progress about Alkylation, stereoselective. 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

Zhang, Yongjun published the artcileRemoval of emerging organic contaminants with a pilot-scale biofilter packed with natural manganese oxides, Related Products of isoquinoline, the main research area is pharmaceutical pollution wastewater biofilter packed manganese oxide.

Emerging organic contaminants (EOCs), consisting of pharmaceuticals, industrial/household additives, and their transformation products, have been widely detected in surface water bodies and may lead to potential ecol. risks. Installing a tertiary treatment step in sewage treatment plants (STP) is an effective method to control their contamination. In this study, a pilot-scale biofilter was set up with natural manganese oxides as carrier materials at a local STP to treat the real secondary effluent. This innovative and simple reactor was on-site operated for approx. 500 days. Some EOCs were effectively removed after adaptation, including 10,11-dihydro-10,11-dihydroxycarbamazepine (98%), gabapentin (97%), tramadol (93%), carbamazepine (91%), benzotriazole (91%), sulfamethoxazole (88%), erythromycin (86%). By contrast, the removal of others can be obtained without adaptation, including diclofenac (91%), carboxy-acyclovir (91%), iomeprol (89%), 1-hydroxybenzotriazol (87%), 4′-hydroxydiclofenac (86%), acyclovir (73%), tolyltriazole (70%). Overall, 80% of the total mass of 15 detected EOCs was eliminated from the secondary effluent. In addition, 53% of UV254 was removed from wastewater, indicating the aromatic content was damaged to a certain extent.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Advanced wastewater treatment. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Banaschik, Robert published the artcileDegradation and intermediates of diclofenac as instructive example for decomposition of recalcitrant pharmaceuticals by hydroxyl radicals generated with pulsed corona plasma in water, SDS of cas: 117-96-4, the main research area is recalcitrant pharmaceutical diclofenac decomposition hydroxyl pulsed corona plasma wastewater; Advanced oxidation process; Hydroxyl radicals; Pharmaceutical residues diclofenac; Pulsed corona plasma; Water treatment.

Seven recalcitrant pharmaceutical residues (diclofenac, 17α-ethinylestradiol, carbamazepine, ibuprofen, trimethoprim, diazepam, diatrizoate) were decomposed by pulsed corona plasma generated directly in water. The detailed degradation pathway was investigated for diclofenac and 21 intermediates could be identified in the degradation cascade. Hydroxyl radicals have been found primarily responsible for decomposition steps. By spin trap enhanced ESR spectroscopy (EPR), ·OH-adducts and superoxide anion radical adducts were detected and could be distinguished applying BMPO as a spin trap. The increase of concentrations of adducts follows qual. the increase of hydrogen peroxide concentrations Hydrogen peroxide is eventually consumed in Fenton-like processes but the concentration is continuously increasing to about 2 mM for a plasma treatment of 70 min. Degradation of diclofenac is inversely following hydrogen peroxide concentrations No qual. differences between byproducts formed during plasma treatment or due to degradation via Fenton-induced processes were observed Findings on degradation kinetics of diclofenac provide an instructive understanding of decomposition rates for recalcitrant pharmaceuticals with respect to their chem. structure. Accordingly, conclusions can be drawn for further development and a first risk assessment of the method which can also be applied towards other AOPs that rely on the generation of hydroxyl radicals.

Journal of Hazardous Materials published new progress about Advanced wastewater treatment. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, SDS of cas: 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Garcia-Segura, Sergi published the artcileRemoval of organic contaminants from secondary effluent by anodic oxidation with a boron-doped diamond anode as tertiary treatment, Product Details of C11H9I3N2O4, the main research area is organic contaminant secondary wastewater anodic oxidation boron doped diamond; Boron-doped diamond anode; Electrochemical oxidation; Micropollutants; Secondary effluent; Tertiary water treatment.

Electrochem. advanced oxidation processes (EAOPs) have been widely studied as promising technologies to remove trace organic contaminants from water, but have rarely been used for the treatment of real waste streams. Anodic oxidation with a B-doped diamond (BDD) anode was applied for the treatment of secondary effluent from a municipal sewage treatment plant containing 29 target pharmaceuticals and pesticides. The effectiveness of the treatment was assessed from the contaminants decay, dissolved organic carbon and COD removal. The effect of applied current and pH was evaluated. Almost complete mineralization of effluent organic matter and trace contaminants can be obtained by this EAOP primarily due to the action of hydroxyl radicals formed at the BDD surface. The oxidation of Cl- in the wastewater at the BDD anode gave rise to active Cl species (Cl/HClO/ClO-), which are competitive oxidizing agents yielding chloramines and organohalogen byproducts, quantified as adsorbable organic halogen. However, further anodic oxidation of HClO/ClO- species led to the production of ClO3- and ClO4-. The formation of these species hampers the application as a single-stage tertiary treatment, but posterior cathodic reduction of chlorate and perchlorate species may reduce the risks associated to their presence in the environment.

Journal of Hazardous Materials published new progress about Advanced wastewater treatment. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Product Details of C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem