Category: isoquinoline

Lui, Yuen Wai published the artcileMethylation with Dimethyl Carbonate/Dimethyl Sulfide Mixtures: An Integrated Process without Addition of Acid/Base and Formation of Residual Salts, HPLC of Formula: 151-10-0, the main research area is methylphenol preparation; methylbenzoate preparation; phenylpropanenitrile preparation; alkylation; dimethyl carbonate; green solvent; lignin; organocatalysis.

Di-Me sulfide, a major byproduct of the Kraft pulping process, was used as an inexpensive and sustainable catalyst/co-reagent (Me donor) for various methylations with di-Me carbonate (as both reagent and solvent), which afforded excellent yields of O-methylated phenols and benzoic acids, and mono-C-methylated arylacetonitriles. Furthermore, these products could be isolated using a remarkably straightforward workup and purification procedure, realized by di-Me sulfide’s neutral and distillable nature and the absence of residual salts. The likely mechanisms of these methylations were elucidated using exptl. and theor. methods, which revealed that the key step involves the generation of a highly reactive trimethylsulfonium methylcarbonate intermediate. The phenol methylation process represents a rare example of a Williamson-type reaction that occurs without the addition of a Bronsted base.

ChemSusChem published new progress about Alkylphenols Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Shang, Yaping published the artcileRhodium(III)-catalyzed indole synthesis at room temperature using the transient oxidizing directing group strategy, Recommanded Product: 4-Methoxy-N-methylaniline, the main research area is alkyl indole preparation; internal alkyne aniline transient oxidizing directing group rhodium catalyst.

Rh-catalyzed reactions of N-alkyl anilines with internal alkynes at room temperature have been developed using an in situ generated N-nitroso group as a transient oxidizing directing group. Due to mild reaction conditions, this method enabled synthesis of a broad range of N-alkyl indoles, including even two indole-based medicinal compds I (R1 = Me, allyl, C6H5, etc.; R2 = 5-Me, 6-CH2OMe, 5-NO2, etc.) and II (R1 = Me, Et, i-Pr, etc.; R2 = H, 5-Me, 5-CO2Me, etc.; R3 = n-Bu, C6H5, 4-MeC6H5, etc.; R4 = Me, COMe, 3-FC6H5, etc.). This work disclosed the feasibility of the transient oxidizing directing group strategy in C-H functionalization reactions, which possesses the potential to enhance overall step-economy and impart new reactivity patterns to substrates.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alkynes, internal Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Jud, Wolfgang published the artcileElectrochemical α-Arylation of Ketones via Anodic Oxidation of in situ Generated Silyl Enol Ethers, Name: 1,3-Dimethoxybenzene, the main research area is aryl ketone electrochem arylation arene; aralkyl ketone preparation.

An electrochem. procedure for the α-arylation of ketones has been developed. The method is based on the generation and one-pot anodic oxidation of silyl enol ethers in the presence of an arene. This strategy avoids isolation of the silyl enol intermediate and the utilization of external supporting electrolytes. Intermol. arylations, which had not been reported so far, are possible when electron-rich arenes are utilized as coupling partners. The method has been demonstrated for a wide variety of aryl ketones and activated arenes in moderate to good yields (up to 69%). Mechanistic insights and a theor. rationale that explained the ketone α-arylation vs. dimerization selectivity are also presented.

Journal of Organic Chemistry published new progress about Aralkyl ketones Role: SPN (Synthetic Preparation), PREP (Preparation). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Name: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Guan, Renpeng published the artcileDecarboxylative oxygenation of carboxylic acids with O2via a non-heme manganese catalyst, Category: isoquinoline, the main research area is manganese photocatalyst preparation; aryl carboxylic acid manganese photocatalyst oxygenation; arylaldehyde preparation; arylketone preparation.

Decarboxylative oxygenation of carboxylic acids using a non-heme manganese catalyst under blue light irradiation with O2 as the sole oxidant. Featuring mild reaction conditions, the protocol allowed readily available carboxylic acids to be converted into a wide variety of valuable aldehydes, ketones and amides. Mechanistic studies indicated that the decarboxylation and oxygenation involved the formation of active Mn-oxygen species.

Green Chemistry published new progress about Aromatic amides Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Pradhan, Suman published the artcileRegiodivergent Aromatic Electrophilic Substitution Using Nitrosoarenes in Hexafluoroisopropanol: A Gateway for Diarylamines and p-Iminoquinones Synthesis, Application of 1,3-Dimethoxybenzene, the main research area is diaryl amine iminoquinone regiodivergent preparation; arene nitrosoarene regiodivergent aromatic electrophilic substitution.

A metal-free aromatic electrophilic substitution reaction using nitrosoarenes as electrophiles in 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) was reported. HFIP activates nitrosoarene toward the electrophilic C-H amination followed by a concomitant N-O bond cleavage to deliver diarylamines, e.g. I (R1 = H, Cl, I, CF3, R2 = H; R1 = H, R2 = Br, Me, EtO2C) from 1,3,5-trimethoxybenzene, without requiring any extra reagent or further treatment. The dual electrophilic nature of nitrosoarene permitted a switch-over of selectivity to C-H oxygenation furnishing dearomatized p-iminoquinones, such as II, following a unique mechanistic rationale of two consecutive [2,3] sigmatropic rearrangement in nitroso-chem.

Advanced Synthesis & Catalysis published new progress about Aromatic amines 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 of 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Pandey, Vipin K. published the artcileSimple silver(I)-salt catalyzed selective hydroboration of isocyanates, pyridines, and quinolines, SDS of cas: 5961-59-1, the main research area is hydroboration isocyanate pyridine quinoline preparation formamide amine dihydropyridine tetrahydroquinoline; silver hexafluoroantimonate catalyst hydroboration reduction isocyanate pyridine quinoline.

AgSbF6 has been established as an effective catalyst for the hydroboration of structurally and electronically diverse isocyanates under ligand- and solvent-free conditions which selectively yielded either N-boryl formamides or N-boryl methylamines under different conditions. Further, various N-heterocycles can be selectively hydroborated using this simple catalytic system; pyridine derivatives undergo preferential 1,4 hydroboration whereas the formation of tetrahydroquinoline (after hydrolysis) via complete heterocycle hydrogenation was observed for quinolines.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aromatic amines Role: SPN (Synthetic Preparation), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, SDS of cas: 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Kumar, Devarapalli Ravi published the artcileCopper-Catalyzed Chemoselective 1,4-Reductions: Sequential One-Pot Synthesis of Esters, Formula: C9H10O3, the main research area is cabonyl ester preparation chemoselective; carbonyl compound triethyl phosphonoacetate reduction copper catalyst; indanone preparation chemoselective; triethyl phosphonoacetate carbonyl compound cyclization copper catalyst.

A sequential one-pot Horner-Wadsworth-Emmons reaction followed by [Cu]-catalyzed 1,4-reduction for an efficient preparation of esters (R1)(R2)CHCH2C(O)OC2H5 (R1 = H, Me; R2 = Ph, naphthalen-1-yl, thiophen-2-yl, 2H-1,3-benzodioxol-5-yl, 4-chlorophenyl, etc.; R1R2 = -(CH2)4-, -(CH2)5-, -(CH2)6-) is described. The protocol showed excellent chemoselectivity and broad functional group tolerance. In addition, the strategy was successfully applied for the synthesis of indanones I (R3 = 4-Me, 5-iso-Pr, 7-methoxy, 5-methoxy; R4 = H, Me) by using a single column chromatog. process.

ChemistrySelect published new progress about Aromatic esters Role: SPN (Synthetic Preparation), PREP (Preparation). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yadykov, Anton V. published the artcileCyclization of Polarized Divinyl Ketones under Aqueous and Ambient Conditions, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is combretastatin A4 analog preparation Nazarov cyclization polarized divinyl ketone.

An ‘on-water’ protocol has been developed for the synthesis of combretastatin A-4 (CA-4) analogs by cyclization of polarized triaryldivinyl ketones using hydrochloric acid as a promoter in 45-95% yields. The reaction time was reduced by about 30 times due to ultrasonic irradiation at ambient temperature The other advantages of this new method are operational simplicity, easy workup, no column purification, and applicability on a gram-scale. It was shown that the amphiphilicity of the substrate and a low energy barrier of the reaction are a prerequisite for electrophilic and concerted reactions under aqueous and ambient conditions.

Advanced Synthesis & Catalysis published new progress about Combretastatins 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

Bonnefoy, Clemence published the artcileStudy of Carbamoyl Fluoride: Synthesis, Properties and Applications, Category: isoquinoline, the main research area is carbamoyl fluoride preparation stability; amine fluorocarbonylation dinitrotrifluoromethoxybenzene; radiolabeled carbamoyl fluoride preparation; carbamoyl fluorides; dinitrotrifluoromethoxybenzene; fluorine; radiochemistry; trifluoromethoxide.

In this study, the little-explored carbamoyl fluorides have been studied in order to bring relevant information for their application to the community of chemists. A new easy, safe, inexpensive, and metal-free synthesis method is also described. Finally, a potential use in radiochem. through a 18F/19F isotopic exchange is demonstrated.

Chemistry – A European Journal published new progress about Acid fluorides Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Tekguel, Yeliz published the artcileDetermination of the effect of wheat germ on the mineral and fatty acid composition and aroma compounds of tarhana: A traditional fermented cereal food, Recommanded Product: 5-Methyl-2-phenylhex-2-enal, the main research area is tarhana wheat germ mineral fatty acid aroma compound detection.

In this study, to supply to the trend toward natural and functional foods that do not include synthetic products, the wheat germ which exists as waste in nature was added to tarhana formulation in order to increase the nutritional content of tarhana. Wheat germ supplemented tarhana samples met the recommended dietary allowances of iron. A total of 63 compounds were detected and quantitated in all samples. Terpenes and terpenoids were observed as the dominant compound group. The addition of wheat germ to tarhana dough resulted in an increase in the number of volatile compounds The most abundant odor-active compounds were acetic acid and 2-acetylpyyrole.The mineral (Mg, K, Zn, Mn), fatty acid (undecaenoic, linoleic, gondoic acid, and α-linolenic), oil, acid (propanoic and hexanoic), alc. (linalool, benzyl, phenylethyl), aldehyde ((E)-2-heptenal, nonanal, 5-methyl-2-phenyl-2-hexenal), ketone (3-Octen-2-one), terpene (junipene, citronellol, trans-Carveol) contents of tarhana samples can be increased by addition of the wheat germ. The wheat germ which exists as waste in nature and contains a high amount of essential amino acids, proteins, fatty acids, minerals, dietary fiber, vitamins, etc. Wheat germ can be added to cereal-based food formulation such as tarhana in order to supply to the trend toward natural and functional foods that do not include synthetic products. Tarhana (basically made from yogurt, wheat flour, herbs, tomato, pepper, onion, etc.) which is a traditional fermented dry Turkish soup is rich in vitamins, minerals, and proteins. Wheat germ based-fermented products such as Tarhana may be considered promising new functional foods due to its probiotic effects in order to expand the market due to the increasing trend toward functional foods.

Journal of Food Processing and Preservation published new progress about Acids Role: ANT (Analyte), PRP (Properties), ANST (Analytical Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Recommanded Product: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem