Month: November 2022

Shen, Zhenpeng published the artcileIron-Promoted Decarboxylation of Arylacetic Acids for the Synthesis of Aromatic Nitriles with Sodium Nitrite as the Nitrogen Source, Product Details of C9H10O3, the main research area is aromatic nitrile preparation; arylacetic acid decarboxylation iron catalyst.

A new and effective method was developed for the synthesis of aromatic nitriles ArCN (Ar = 4-chlorophenyl, naphthalen-1-yl, thiophen-2-yl, etc.) (I) from arylacetic acids ArCH2C(O)OH (II) by using NaNO2 as the nitrogen source and Fe(OTf)3 as the promoter at 50°C. A series of arylacetic acids II underwent this transformation to give the targeted products I in yields of 51-90%. Because of the mild conditions, the reaction is compatible with a broad range of functional groups, including ester, carboxy, hydroxy, acetamido, halo, nitro, cyano, methoxy, and even highly reactive formyl groups.

Synlett published new progress about Aromatic carboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Meszaros, Rebeka published the artcileExploiting a silver-bismuth hybrid material as heterogeneous noble metal catalyst for decarboxylations and decarboxylative deuterations of carboxylic acids under batch and continuous flow conditions, Application of 1,3-Dimethoxybenzene, the main research area is silver bismuth hybrid material catalyst preparation crystallinity; aromatic carboxylic acid silver bismuth hybrid material catalyst decarboxylation; deutero aromaticcarboxylic acid silver bismuth hybrid material catalyst deuterativedecarboxylation.

A novel catalytic methodologies for protodecarboxylations and decarboxylative deuterations of carboxylic acids utilizing a silver-containing hybrid material as a heterogeneous noble metal catalyst were reported. After an initial batch method development, a chem. intensified continuous flow process was established in a simple packed-bed system which enabled gram-scale protodecarboxlyations without detectable structural degradation of the catalyst. The scope and applicability of the batch and flow processes were demonstrated through decarboxylations of a diverse set of aromatic carboxylic acids. Catalytic decarboxylative deuterations were achieved on the basis of the reaction conditions developed for the protodecarboxylations using D2O as a readily available deuterium source.

Green Chemistry published new progress about Aromatic carboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Maddila, Surya Narayana published the artcileAn eco-friendly approach for synthesis of novel substituted 4H-chromenes in aqueous ethanol under ultra-sonication with 94% atom economy, Quality Control of 86-51-1, the main research area is chromene preparation ultrasonication green chem; aryl aldehyde active methylene compound dimedone three component cyclization.

An operational approach for synthesis of eleven substituted 4H-chromene derivatives I (R = 2-CH3OC6H4, 4-CF3C6H4, pyridin-3-yl, etc.; R1 = Me, Et) by one-pot, three-component reaction of aromatic aldehydes RCHO, Me/Et cyanoacetate and 5,5 di-Me 1,3-cyclohexadione through ultrasound irradiation, in the presence of aqueous ethanol under catalyst-free condition is reported. Different spectral methods, including 1H, 13C and 15N NMR and HRMS were utilized to characterize the new mols. Benefits of the eco-friendly method are fast reaction (10 min), excellent yields (92-98%), no column chromatog. and no byproducts. Reaction offers 94% atom economy and 100% carbon capture.

Journal of Molecular Structure published new progress about Aryl aldehydes, heteroaryl Role: RCT (Reactant), RACT (Reactant or Reagent). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Quality Control of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mastuo, Kasumi published the artcileNickel-Catalyzed Hydrodeoxygenation of Aryl Sulfamates with Alcohols as Mild Reducing Agents, Application In Synthesis of 151-10-0, the main research area is aromatic hydrocarbon preparation; aryl sulfamate hydrodeoxygenation nickel catalyst.

The nickel-catalyzed hydrodeoxygenation of aryl sulfamates ROS(O)2R1 [R = 2-propanoylbenzen-1-yl, 1-ethyl-1H-indol-4-yl, 4-(4-acetylpiperazin-1-yl)benzen-1-yl, etc.; R1 = dimethylaminyl, piperidin-1-yl, bis(propan-2-yl)aminyl, etc.] has been developed with alcs. as mild reductants. A variety of functional groups and heterocycles were tolerated in this reaction system to give the desired products RH in high yields. In addition, the gram-scale process and stepwise cine-substitution were also achieved with high efficiency.

Synthesis published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Shi, Jiale published the artcileMetal-Free Heterogeneous Semiconductor for Visible-Light Photocatalytic Decarboxylation of Carboxylic Acids, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is aliphatic hetero aromatic arene preparation; hetero aromatic aliphatic acid hydrodecarboxylation photocatalyst; deuteride aliphatic hetero aromatic arene preparation; aromatic hetero aliphatic acid decarboxylative deuteration photocatalyst; diaryl methane preparation; carboxylic acid hetero aryl cyanide decarboxylative arylation photocatalyst.

A suitable protocol for the photocatalytic decarboxylation of carboxylic acids RC(O)OH (R = 3,5-dimethylphenyl, 2-(4-methylphenyl)ethyl, diphenylmethyl, isoquinolin-1-yl, etc.) was developed with metal-free ceramic boron carbon nitrides (BCN). With visible light irradiation, BCN oxidizes carboxylic acids to give carbon-centered radicals, which were trapped by hydrogen atom donors or employed in the construction of the carbon-carbon bond. In this system, both (hetero)aromatic and aliphatic acids proceed through the decarboxylation smoothly; and C-H, C-D, and C-C bonds are formed in moderate to high yields (35 examples, yield up to 93%). Control experiments support a radical process, and isotopic experiments show that methanol is employed as the hydrogen atom donor. Recycling tests and a gram-scale reaction elucidate the practicability of the heterogeneous ceramic BCN photoredox system. It provides an alternative to homogeneous catalysts in the valuable carbon radical intermediates formation. Moreover, the metal-free system is also applicable to late-stage functionalization of anti-inflammatory drugs, such as naproxen and ibuprofen, which enrich the chem. toolbox.

ACS Catalysis published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Recommanded Product: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shi, Jiale published the artcileMetal-Free Heterogeneous Semiconductor for Visible-Light Photocatalytic Decarboxylation of Carboxylic Acids, Application In Synthesis of 151-10-0, the main research area is aliphatic hetero aromatic arene preparation; hetero aromatic aliphatic acid hydrodecarboxylation photocatalyst; deuteride aliphatic hetero aromatic arene preparation; aromatic hetero aliphatic acid decarboxylative deuteration photocatalyst; diaryl methane preparation; carboxylic acid hetero aryl cyanide decarboxylative arylation photocatalyst.

A suitable protocol for the photocatalytic decarboxylation of carboxylic acids RC(O)OH (R = 3,5-dimethylphenyl, 2-(4-methylphenyl)ethyl, diphenylmethyl, isoquinolin-1-yl, etc.) was developed with metal-free ceramic boron carbon nitrides (BCN). With visible light irradiation, BCN oxidizes carboxylic acids to give carbon-centered radicals, which were trapped by hydrogen atom donors or employed in the construction of the carbon-carbon bond. In this system, both (hetero)aromatic and aliphatic acids proceed through the decarboxylation smoothly; and C-H, C-D, and C-C bonds are formed in moderate to high yields (35 examples, yield up to 93%). Control experiments support a radical process, and isotopic experiments show that methanol is employed as the hydrogen atom donor. Recycling tests and a gram-scale reaction elucidate the practicability of the heterogeneous ceramic BCN photoredox system. It provides an alternative to homogeneous catalysts in the valuable carbon radical intermediates formation. Moreover, the metal-free system is also applicable to late-stage functionalization of anti-inflammatory drugs, such as naproxen and ibuprofen, which enrich the chem. toolbox.

ACS Catalysis published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Moore, James T. published the artcileLight-Driven Hydrodefluorination of Electron-Rich Aryl Fluorides by an Anionic Rhodium-Gallium Photoredox Catalyst, Category: isoquinoline, the main research area is rhodium gallium aluminum indium trisphosphinomethylaminophenylamine complex preparation structure property; arene preparation; photoredox rhodium gallium complex catalyst defluorination fluoroarene; Gallium; Heterobimetallic; Hydrodefluorination; Photoredox Catalysis; Rhodium.

An anionic Rh-Ga complex I·{Li(THF)4} catalyzed the hydrodefluorination of challenging C-F bonds in electron-rich aryl fluorides and trifluoromethylarenes when irradiated with violet light in the presence of H2, a stoichiometric alkoxide base, and a crown-ether additive. Based on theor. calculations, the LUMO (LUMO), which is delocalized across both the Rh and Ga atoms, becomes singly occupied upon excitation, thereby poising the Rh-Ga complex for photoinduced single-electron transfer (SET). Stoichiometric and control reactions support that the C-F activation is mediated by the excited anionic Rh-Ga complex. After SET, the proposed neutral Rh0 intermediate was detected by EPR spectroscopy, which matched the spectrum of an independently synthesized sample. Deuterium-labeling studies corroborate the generation of aryl radicals during catalysis and their subsequent hydrogen-atom abstraction from the THF solvent to generate the hydrodefluorinated arene products. Altogether, the combined exptl. and theor. data support an unconventional bimetallic excitation that achieves the activation of strong C-F bonds and uses H2 and base as the terminal reductant.

Angewandte Chemie, International Edition published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Luo-Yan published the artcileLigand-Promoted Non-Directed C-H Cyanation of Arenes, Safety of 1,3-Dimethoxybenzene, the main research area is arene silver cyanide palladium pyridinol catalyst regioselective cyanation; cyanoarene preparation; 2-pyridone; C−H activation; arenes; cyanation; palladium.

The first example of a 2-pyridone accelerated non-directed C-H cyanation with an arene as the limiting reagent was reported. This protocol was compatible with a broad scope of arenes, including advanced intermediates, drug mols. and natural products. A kinetic isotope experiment (kH/kD=4.40) indicated that the C-H bond cleavage is the rate-limiting step. Also, the reaction is readily scalable, further showcasing the synthetic utility of this method.

Chemistry – A European Journal published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Safety of 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chiaia-Hernandez, Aurea C. published the artcileSuspect and nontarget screening approaches to identify organic contaminant records in lake sediments, COA of Formula: C11H9I3N2O4, the main research area is suspect nontarget screening identification organic contaminant record lake sediment; identification organic contaminant record lake sediment Switzerland.

Sediment cores provide a valuable record of historical contamination, but so far, new anal. techniques such as high-resolution mass spectrometry (HRMS) have not yet been applied to extend target screening to the detection of unknown contaminants for this complex matrix. A combination of target, suspect, and nontarget screening using liquid chromatog. (LC)-HRMS/MS was performed on extracts from sediment cores obtained from Lake Greifensee and Lake Lugano located in the north and south of Switzerland, resp. A suspect list was compiled from consumption data and refined using the expected method coverage and a combination of automated and manual filters on the resulting measured data. Nontarget identification efforts were focused on masses with Cl and Br isotope information available that exhibited mass defects outside the sample matrix, to reduce the effect of anal. interferences. In silico methods combining the software MOLGEN-MS/MS and MetFrag were used for direct elucidation, with addnl. consideration of retention time/partitioning information and the number of references for a given substance. The combination of all available information resulted in the successful identification of 3 suspect (chlorophene, flufenamic acid, lufenuron) and 2 nontarget compounds (hexachlorophene, flucofuron), confirmed with reference standards, as well as the tentative identification of 2 chlorophene congeners (dichlorophene, bromochlorophene) that exhibited similar time trends through the sediment cores. This study demonstrates that complementary application of target, suspect, and nontarget screening can deliver valuable information despite the matrix complexity and provide records of historical contamination in 2 Swiss lakes with previously unreported compounds

Analytical and Bioanalytical Chemistry published new progress about Amine oxides, C10-16-alkyldimethyl Role: POL (Pollutant), OCCU (Occurrence). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, COA of Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Richards, Kenza published the artcileEco-Friendly Methodology for the Formation of Aromatic Carbon-Heteroatom Bonds by Using Green Ionic Liquids, HPLC of Formula: 151-10-0, the main research area is haloarene green preparation melted ferric chloride ionic liquid; DFT-HF calculation; aromatic electrophilic substitution; ionic liquids; mixed melted salts; sustainable chemistry.

A new sustainable method is reported for the formation of aromatic carbon-heteroatom bonds under solvent-free and mild conditions (no co-oxidant, no strong acid and no toxic reagents) by using a new type of green ionic liquid The bromination of methoxy arenes was chosen as a model reaction. The reaction methodol. is based on only using natural sodium bromine, which is transformed into an electrophilic brominating reagent within an ionic liquid, easily prepared from the melted salt FeCl3 hexahydrate. Bromination reactions with this in-situ-generated reagent gave good yields and excellent regioselectivity under simple and environmentally friendly conditions. To understand the unusual bromine polarity reversal of sodium bromine without any strong oxidant, the mol. structure of the reaction medium was characterized by Raman and direct infusion electrospray ionization mass spectroscopy (ESI-MS). An extensive computational investigation using d. functional theory methods was performed to describe a mechanism that suggests indirect oxidation of Br- through new iron adducts. The versatility of the methodol. was successively applied to nitration and thiocyanation of methoxy arenes using KNO3 and KSCN in melted hexahydrated FeCl3.

Chemistry – A European Journal published new progress about Alkyl aryl ethers, aryl Me Role: RCT (Reactant), RACT (Reactant or Reagent). 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