Category: isoquinoline

Sole, Daniel published the artcileIron-promoted dealkylative carbene aminocyclization of δ-arylamino-α-diazoesters, Synthetic Route of 5961-59-1, the main research area is aryl proline preparation; arylamino diazoester preparation aminocyclization iron catalyst.

Herein, a novel methodol. to access N-aryl proline derivatives I (R = Ph, 2,4-dimethylphenyl, naphthalen-1-yl, etc.; R1 = Me, Et) using amino-tethered α-diazoesters RN(R2)(CH2)3C(=N2)C(O)OR1 [R2 = Me, Et, i-Pr, t-Bu, Bn] and cheap, readily available iron salts were reported. Mechanistically, the aminocyclization reaction involves the initial formation of an iron-carbene complex followed by a nucleophilic attack of the aniline nitrogen atom to give an ammonium ylide intermediate, which finally undergoes the iron-promoted dealkylation.

Dalton Transactions published new progress about Anilines 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, Synthetic Route of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Zhong-Wei published the artcileEfficient Synthesis of 7H-Chromeno[3,2-c]quinolin-5-ium Salts and Quinolin-4-ones through Acid-Promoted Cascade Reaction of 3-Formylchromones and Anilines, Synthetic Route of 5961-59-1, the main research area is hydroxybenzoyl quinolinone preparation; chromenoquinolinium salt preparation green chem ring opening; formylchromone tandem cycloaddition oxidation aniline.

The authors report an efficient and environment-friendly approach for the synthesis of multisubstituted 7-oxo-7H-chromeno[3,2-c]quinolin-5-ium salts I [R1 = H, F, Cl, Me, Br, R2 = Me, Et, R3 = NO2, iso-Pr, OPh, etc.] using ambient air as a green sole oxidant. I were prepared through metal-free cascade intermol. cycloaddition/oxidation reaction of 3-formylchromones II and N-substituted anilines 4-R3C6H4NHR2 using HClO4 as the reagent and promoter under concise one-pot conditions. In the applied research, the resulting quinolinium salts I could serve as synthons and could be further transformed into diverse synthetically useful 3-(2-hydroxybenzoyl)quinolin-4-ones III in water. This protocol offers a simple cascade strategy to synthesize a wide variety of natural-like chromeno[3,2-c]quinolin-5-ium salts and quinolin-4-ones, and demonstrates academic research potential as well as industrial applications.

ChemistrySelect published new progress about Anilines 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, Synthetic Route of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Fu, Aixiao published the artcileSelective N-Monomethylation of Amines and Nitroarenes using Methanol over an Encapsulated Iridium Nanocatalyst, Computed Properties of 5961-59-1, the main research area is methyl amine green preparation; amine methanol selective monomethylation encapsulated iridium nanocatalyst; nitroarene methanol selective monomethylation encapsulated iridium nanocatalyst.

A highly selective N-monomethylation of aniline and nitrobenzene using methanol as methylating reagent was achieved with high efficiency when using an encapsulated iridium nanocatalyst. A wide range of amines and nitro compounds reacted well in the established catalytic system with moderate to excellent product yields and good functional group tolerance. The transfer hydrogenation and successive cyclization coupling reaction of ortho-phenylenediamine with methanol to afford benzimidazole and N-methylbenzimidazole was also efficiently realized under moderate reaction conditions. Recycling experiments showed that the iridium nanocatalyst had a good stability without obvious activity loss.

Asian Journal of Organic Chemistry published new progress about Anilines 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, Computed Properties of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Meng, Jing published the artcileSelective N-monomethylation of primary anilines with the controllable installation of N-CH2D, N-CHD2, and N-CD3 units, Formula: C8H11NO, the main research area is aniline monomethylation.

The selective N-monomethylation of primary anilines was realized using the Me3N-BH3/N,N-dimethylformamide (DMF) system as the Me source. This method also allows for the controllable introduction of N-CH2D, N-CHD2, and N-CD3 units with high levels of deuterium incorporation using Me3N-BH3/d7-DMF, Me3N-BD3/DMF and Me3N-BD3/d7-DMF systems, resp.

Organic & Biomolecular Chemistry published new progress about Anilines 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, Formula: C8H11NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Matsukawa, Yuta published the artcileReactions between 5-Nitroso-1,3-diphenyltetrazolium Salts and Electron-Rich Arenes, Amines, Thiophenol, Sulfoxides, and Thioanisole, Product Details of C8H10O2, the main research area is nitroso diphenyltetrazolium salt arene amine thiophenol sulfoxide thioanisole oxidation.

A series of reactions between 5-nitroso-1,3-diphenyltetrazolium tetrafluoroborate and methoxybenzenes such as 1,3,5-trimethoxybenzene, 1,3-dimethoxybenzene, methoxybenzene, amines such as aniline, N,N’-bianiline, benzhydrylamine, benzylamine, thiols (thioanisole, thiophenol), sulfoxides (DMSO, di-Ph sulfoxide) and di-Ph sulfide, most of which are generally accepted as being inert to nitroso groups, is reported here. The tetrazolium-activated nitroso functionality is capable of oxidizing the aforementioned substrates to give the corresponding oxidized products e.g., azobenzene, and the nitroso tetrazolium itself is transformed into the corresponding amide or hydroxyamide I [R = NH-, O-], depending on the nature of the reaction partners. In the case of thioanisole, an addition product II•BF4- was obtained.

Bulletin of the Chemical Society of Japan published new progress about Anisoles 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, Product Details of C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Jing-Hao published the artcileThiol Activation toward Selective Thiolation of Aromatic C-H Bond, Name: 1,3-Dimethoxybenzene, the main research area is thiophenol aryl ether regioselective electrochem thiolation; diaryl thioether preparation.

An effective model for regioselective thiolation of the aromatic C-H bond by thiol activation instead of arene activation was disclosed. This method was applied into anisole derivatives that are not available in the arene activation approach to forge a single thioether isomer with high reactivity.

Organic Letters published new progress about Anisoles 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, Name: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tu, Guangliang published the artcileLigand-Promoted Nickel-Catalyzed para-Selective Carboxylation of Anisoles, Recommanded Product: 1,3-Dimethoxybenzene, the main research area is anisole regioselective carboxylation bromoform radical nickel catalyst.

It has always been a challenge in free radical chem. to control site selectivity during the reaction of free radicals with aromatic rings. Herein, the site-selective carboxylation of anisoles through the direct reaction of the bromoform radical with a benzene ring at the para position under the assistance of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline with nickel(II) as the catalyst is reported. A wide variety of anisoles were compatible, leading to para-carboxylated products in moderate to good yields. A preliminary mechanistic study suggested that the Ni(II) complex coordinates with the methoxyl group of the aromatic ring, which may have increased the steric hindrance at the ortho and meta positions, while this weak interaction reduces the aromaticity of the aromatic ring, affording an activated Ph ring, thereby leading to highly para-selective carboxylation.

Organic Letters published new progress about Anisoles 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, Recommanded Product: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Sukowski, Verena published the artcileS,O-Ligand-Promoted Pd-Catalyzed C-H Olefination of Anisole Derivatives, Name: 1,3-Dimethoxybenzene, the main research area is anisole olefination palladium catalyst.

The C-H olefination of substituted anisole derivatives by a Pd/S,O-ligand catalyst is reported. The reaction proceeds under mild conditions with a broad range of substituted aryl ethers bearing both electron donating and withdrawing substituents at ortho, meta and para positions. Aryl ethers are used as limiting reagents and good yields and site selectivities are observed The methodol. is operationally simple and can be performed under aerobic conditions.

European Journal of Organic Chemistry published new progress about Anisoles 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, Name: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Calva-Estrada, S. J. published the artcileThermal properties and volatile compounds profile of commercial dark-chocolates from different genotypes of cocoa beans (Theobroma cacao L.) from Latin America, Name: 5-Methyl-2-phenylhex-2-enal, the main research area is Theobroma cacao thermal property volatile compound dark chocolate genotype; 2,3-Butanediol (PubChem CID 262); 2-Methylpropanoic acid (PubChem CID 6590); 2-Nonanone (PubChem CID 13187); 2-Phenylethyl acetate (PubChem CID 7654); 2-Phenylethyl alcohol (PubChem CID 6054); 3-Methyl-butanal (PubChem CID 11552); Benzaldehyde (PubChem CID 240); Chemometrics; Differential scanning calorimetry; Furfural (PubChem CID 7362); Hierarchical cluster analysis heatmap; Polymorphism; Principal component analysis; Tetramethylpyrazine (PubChem CID 14296); Trimethylpyrazine (PubChem CID 26808).

There is a growing interest in the identification of chemometric markers that allow the distinction and authentication of dark-chocolates according to their cocoa geog. origin and/or genotype. However, samples derived from Latin American cocoa, including specimens from North and South America, have not been studied in this context. An exploration of the melting behavior, fat composition, bioactive content, and volatile profile of com. darkchocolates was conducted to identify possible patterns related to the genotype and/or origin of cocoa from Latin America. The melting properties were evaluated by DSC and related to fat content and fatty acids profile. Total polyphenol, anthocyanin, methylxanthine, and catechin content were analyzed. Finally, the volatile compounds were extracted and identified by HS-SPME/GC-MS and were analyzed through Principal Component Anal. (PCA) and the Hierarchical Cluster Anal. Heatmap (HCA Heatmap). The fatty acids profile showed a relationship with the melting properties of dark chocolate. The samples exhibited two glass-transition temperatures (Tg) at 19°C and 25.5°C, possibly related to traces of unstable polymorphic forms of monounsaturated triacylglycerides. The anal. of bioactive compounds demonstrated great variability among samples independent of the cocoa origin, genotype, and content. The PCA and HCA Heatmaps allowed discriminating against the chocolates in relation to the cocoa origin and genotype. Compounds like tetramethylpyrazine, trimethylpyrazine, benzaldehyde, and furfural could be considered as dark-chocolate aroma markers derived from Latin American cocoas (North American region). The 2-phenylethyl alc., 2-methylpropanoic acid, 2,3-butanediol, 2-nonanone, and limonene for derived from South America. And the 2-phenylethyl acetate, 3-methyl-butanal, and cinnamaldehyde could allow to distinguishing between regional genotypes.

Food Research International published new progress about Anthocyanins Role: ANT (Analyte), ANST (Analytical Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Name: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Abdelhamid, Yusra published the artcileIsothiourea-Catalyzed [2+2] Cycloaddition of C(1)-Ammonium Enolates and N-Alkyl Isatins, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is beta hydroxyamide preparation diastereoselective enantioselective; alkyl isatin anhydride ammonium enolate cycloaddition ring opening isothiourea.

Enantioselective [2+2] cycloaddition of C(1)-ammonium enolates generated catalytically using the isothiourea HyperBTM with N-alkyl isatins gives spirocyclic β-lactones. In situ ring-opening with an amine nucleophile generates isolable highly enantioenriched products I (R1 = H, 6-Cl, 5-OCF3, etc.; R2 = Me, Bn, allyl; R3 = Ph, 4-MeOC6H4, 1-naphthyl, etc.; Nuc = NHCH2C6H5, N-morpholinyl, N-pyrrolidinyl) in up to 92:8 dr and in >99:1 er.

Organic Letters published new progress about [2+2] Cycloaddition reaction catalysts (stereoselective). 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