Month: November 2022

Liang, Shuaishuai published the artcileOne-pot synthesis of trifluoromethyl amines and perfluoroalkyl amines with CF3SO2Na and RfSO2Na, Computed Properties of 5961-59-1, the main research area is trifluoromethyl perfluoroalkyl amine preparation; secondary amine sodium fluoroalkylsulfinate trifluoromethylation perfluoroalkylation.

A newly developed CF3SO2Na-based trifluoromethylation of secondary amines has been disclosed, and the method has been successfully extended to the configuration of perfluoroalkyl amines using RfSO2Na, complementing the established synthesis strategy of trifluoromethyl amines. Advantages of the method include good functional group tolerance, mild conditions, and inexpensive or easy-to-handle materials. Mechanistic probes indicate that the thiocarbonyl fluoride formed in situ is the key intermediate in the reaction.

Chemical Communications (Cambridge, United Kingdom) published new progress about Perfluoroalkylation. 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

Wang, Dongdong published the artcileComparative studies on polysaccharides, triterpenoids, and essential oil from fermented mycelia and cultivated sclerotium of a medicinal and edible mushroom, Poria cocos, SDS of cas: 21834-92-4, the main research area is fermented mycelia cultivated sclerotium triterpenoid polysaccharide essential oil Poria; HS-GC/MS; Poria cocos; content determination; exopolysaccharides; fermented mycelia; secondary metabolites; triterpenoids; water-soluble polysaccharides.

Poria cocos, an important medicinal and edible fungus, is well known in East Asia. The main active components are water-soluble polysaccharides (WPS) and triterpenoids. Due to the growing market demand, long cultivation period, and consumption of pine trunk during cultivation, alternative methods for producing P. cocos or its active components should be investigated. In this study, WPS, triterpenoids, monosaccharide composition, and essential oil in fermented mycelia and cultivated sclerotium were analyzed using UV spectrophotometry, HPLC, pre-column derivatization, and HS-GC/MS, resp. Our results showed that the WPS and triterpenoids in mycelia are several times higher than those in sclerotium. Among the 62 compounds identified by HS-GC/MS anal. from the essential oil obtained from the fermentation media and a fresh external layer, the two main fragrances in common were linalool and Me phenylacetate. Our results suggested that it is applicable to produce polysaccharides and triterpenoids by the fermentation of P. cocos, and a strategy to improve triterpenoid production in the fermentation process was proposed.

Molecules published new progress about Polysaccharides Role: ANT (Analyte), BSU (Biological Study, Unclassified), ANST (Analytical Study), BIOL (Biological Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, SDS of cas: 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hu, Chen-Yan published the artcileDegradation kinetics of diatrizoate during UV photolysis and UV/chlorination, Application In Synthesis of 117-96-4, the main research area is diatrizoate UV photolysis chlorination degradation kinetics.

The degradation kinetics of the widely used iodinated X-ray contrast medium, namely diatrizoate, was investigated during UV photolysis and UV/chlorination. Factors influencing diatrizoate degradation, such as pH, chlorine dosage, and bromide concentration, were also evaluated. Diatrizoate was not degraded during chlorination. However, the degradation of diatrizoate during UV photolysis and UV/chlorination complied with the pseudo-first-order kinetics. At pH 7, the pseudo-first-order rate constant during UV/chlorination was 9.3 times higher than that during UV photolysis. The results of a radical quenching test using excessive tert-butanol suggested that the contribution of ·Cl, a type of reactive chlorine species (RCS), was limited. The contributions of UV direct photolysis, hydroxyl radicals (·OH), and RCS to diatrizoate degradation during UV/chlorination at pH 7 were estimated to be 12.8%, 1.2%, and 85.9%, resp. Results of further experiment suggested that ·OCl primarily caused diatrizoate degradation As the chlorine concentration gradually increased from 25 to 150 μM, the corresponding pseudo-first-order rate constant of UV/chlorination increased from 8.37 (±0.42) × 10-3 to 5.52 (±0.28) × 10-2 s-1. When the pH value was increased from 5 to 9, the rate of diatrizoate degradation reached the maximum at pH 7 and gradually decreased during UV/chlorination; however, the rate of diatrizoate degradation remained stable during UV photolysis. The degradation of diatrizoate was inhibited when the bromide concentration was increased due to the competition for chlorine between bromide and diatrizoate; thus, the generation of ·OCl was limited. Compared with UV irradiation, UV/chlorination could reduce the formation of iodinated trihalomethanes (I-THM) after chlorination. However, dichloroacetonitrile (C2HCl2N), which is carcinogenic, was generated during UV/chlorination.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about pH. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Application In Synthesis of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Luo, Zhenli published the artcileMetal-Free Reductive Amination of Ketones with Amines Using Formic Acid as the Reductant under BF3 · Et2O Catalysis, Computed Properties of 5961-59-1, the main research area is ketone amine formic acid boron trifluoride etherate reductive amination; alkylamine preparation.

BF3·Et2O was found to effectively catalyze reductive amination of ketones with amines employing formic acid as the reductant under metal-free conditions. This transformation tolerated a broad range of primary and secondary amines and differently decorated ketones, delivering N-alkylated amines in good to excellent yields with high compatibility of functional groups. The synthetic potential of this protocol was demonstrated by its application in the preparation of biol. and pharmaceutically relevant compounds

Asian Journal of Organic Chemistry published new progress about Ketones 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

Tomar, Radha published the artcileExpanding the Utility of Inexpensive Pyridine-N-oxide Directing Group for the Site-selective sp2/sp3γ-C-H and sp2δ-C-H Functionalization of Carboxamides, Quality Control of 104-01-8, the main research area is pyridine oxide based biarylacetamide preparation regioselective; heteroaryl based biaryl carboxamide preparation regioselective; tricyclic quinolone preparation regioselective; arylheteroarylmethane preparation regioselective.

In this paper, the scope of pyridine-N-oxide DG was examined for accomplishing the site-selective (mono) γ-C(sp2)-H arylation in substrates containing competitive C(sp3)-H and C(sp2)-H bonds. The investigation had enabled to assemble a library of pyridine-N-oxide-based biarylacetamides, heteroaryl-based biaryl carboxamides, tricyclic quinolones, arylheteroarylmethanes, biaryl-based aliphatic carboxamides and mono (ortho) arylated phenylglycine derivatives In general, biaryl derivatives and in particular, arylacetamide, arylacetic acid derivatives and pyridine-N-oxide (2-aminopyridyl) motifs were medicinally relevant classes of compounds This work enabled the assembling of a library of the above-mentioned types of compounds through the pyridine-N-oxide directing group-aided site-selective sp2/sp3γ-C-H and sp2δ-C-H functionalization of carboxamides.

Asian Journal of Organic Chemistry published new progress about Arylation. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Quality Control of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zanghi, Joseph M. published the artcileEnantio- and Diastereoselective Synthesis of Functionalized Carbocycles by Cu-Catalyzed Borylative Cyclization of Alkynes with Ketones, Safety of 1,3-Dimethoxybenzene, the main research area is diastereoselective copper catalyzed borylative cyclization alkyne ketone alkynylcyclohexanedione; cyclohexandione alkynylation propargyl bromide; diboryl indenone preparation oxidation boryl elimination Martins sulfurane; crystal structure chiral diboryl allyl indenone; mol structure chiral diboryl allyl indenone.

A single-pot Cu-catalyzed enantio- and diastereoselective tandem hydroboration/borylative cyclization of alkynes with ketones for the synthesis of carbocycles is reported. The reaction proceeds via desymmetrization and generates four contiguous stereocenters, including an all-C quaternary center. The method provides rapid access to [6,5]- and [5,5]-bicycles and cyclopentane products. Catalyst-controlled diastereoselectivity by selection of bisphosphine ligand is noted. Utility of the products is demonstrated by site- and chemoselective transformations that afford valuable alkenyl and allyl organoborons.

Organic Letters published new progress about Alkynylation. 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

Zhao, Junyan published the artcileIntramolecular Dehydrogenative Coupling Approach to 2-Oxindoles Using Fe(OAc)2/NaI/Na2S2O8, Quality Control of 5961-59-1, the main research area is oxindone preparation intramol dehydrogenative coupling aniline dicarbonyl.

Oxindole units are common structures that are featuring in natural products and drugs. A novel method for synthesizing 2-oxindoles from 1,3-dicarbonyl compounds based on ferrous salt and iodide catalyst was described. Using Fe(OAc)2/NaI/Na2S2O8, various 2-alkyl-3-phenylamino-3-oxopropanoates, bearing fluoro, chloro, bromo, alkyl, alkoxy, trifluoromethyl, cyano etc. on the benzene ring were converted smoothly into 2-oxindoles.

European Journal of Organic Chemistry published new progress about C-H bond formation. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Quality Control of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Titova, Yu. A. published the artcile4-(Het)aryl-4,7-dihydroazolopyrimidines and Their Tuberculostatic Activity, Name: 2,3-Dimethoxybenzaldehyde, the main research area is dihydrotriazolopyrimidine preparation antituberculosis SAR; dihydropyrazolopyridine preparation antituberculosis SAR.

Structural analogs of a promising antituberculous agent, dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylates I [R = Me, OEt, NH2, i-BuO, OBn; R1 = 2-thienyl, 3-thienyl, 2-O2NC6H4, 4-CO2HC6H4, 2,3-di-MeOC6H4] and Et 6-methyl-4-(thiophen-2-yl)-4,7-dihydro-2H-pyrazolo[3,4-b]pyridine-5-carboxylate were synthesized by three-component condensations of various aromatic or hetarom. aldehydes with several β-dicarbonyl compounds (CH acids) and 1H-1,2,4-triazol-5-amine or 1H-pyrazol-5-amine. The obtained compounds were evaluated for tuberculostatic activity and structure-activity relations were analyzed. Among the synthesized compounds, compound I [R = OEt; R1 = 2-O2NC6H4] proved to be most promising compound

Russian Journal of Organic Chemistry published new progress about Aryl aldehydes 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, Name: 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Zhiguo published the artcileStraightforward synthesis of biologically valuable nonsymmetrical malonamides under mild conditions, Name: 4-Methoxy-N-methylaniline, the main research area is nonsym malonamide regioselective preparation; isocyanate ketoamide nucleophilic addition deacetylation sequence.

A flexible and atom-economical method was developed for efficient preparation of nonsym. malonamides RNHCOCH2CONR1R2 [R = Et, cyclohexyl, Bn, etc.; R1 = Me, Ph, Bn, etc.; R2 = H, Me] from com. or readily available isocyanates and β-ketoamides. These substrates delivered a series of nonsym. malonamides in good to excellent yields via a MgCl2-mediated nucleophilic addition/deacetylation sequence in the presence of a base in an alc. solvent. Salient merits of this chem. include step-economy, ease of work-up, mild conditions, broad substrate scope, functional group tolerance and scalability. The high efficiency and practicability enabled rapid access to diverse precursors of malonamides for use in pharmaceuticals.

Green Chemistry published new progress about Amides, oxo Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Name: 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Feng, Guidong published the artcileCross-dehydrogenative coupling of 3,6-dihydro-2H-pyrans with 1,3-dicarbonyls and aryl moieties, Safety of 1,3-Dimethoxybenzene, the main research area is dicarbonyl compound dihydropyran indium catalyst regioselective oxidative alkylation; arene dihydropyran indium catalyst regioselective oxidative arylation.

An indium-catalyzed oxidative C-H alkylation and arylation of 4-substituted 3,6-dihydro-2H-pyrans (DHPs) using dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as the oxidant was developed. The mild and modular cross-dehydrogenative coupling reaction exhibited a broad scope with respect to both DHPs and nucleophilic 1,3-dicarbonyl moieties as well as aryl rings rapidly providing 2,4-disubstituted DHPs bearing diverse patterns of functionalization at the α-position.

Tetrahedron Letters published new progress about Alkylation catalysts, regioselective. 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