Tag: M.W=150-200

Prasanna, Bolla Lakshmi published the artcileA swift, facile and multicomponent synthesis of 4H-pyran-3-carbonitrile analogues via grinding process under solvent-free conditions, Recommanded Product: 2,3-Dimethoxybenzaldehyde, the main research area is pyran carbonitrile preparation green chem solvent free; malononitrile aldehyde dimethylcyclohexanedione one pot multicomponent condensation.

A novel 4H-pyran-3-carbonitrile analogs have been synthesized conveniently using a highly efficient protocol via solvent-free, one-pot, multicomponent condensation of malononitrile, various aldehydes, and 5,5-dimethylcyclohexane-1,3-dione along with TEA as catalyst under simple grinding approach. Simple handling, mild reaction conditions with superb alterations, inexpensive, environmental friendliness, avoiding toxic solvents, short reaction times (10 min), easy workup process, and higher product yields (89-96%) are remarkable benefits of this approach.

Chemical Data Collections 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, Recommanded Product: 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Sanchooli Tazeh, Kazem published the artcileSynthesis of 2-amino-4 H-chromenes and spirochromenes using basic ionic liquid, 2-hydroxyethylammonium formate as green, stable, and reusable catalyst, Quality Control of 86-51-1, the main research area is amino chromene spirochromene preparation green chem; aldehyde isatin phloroglucinol malononitrile multicomponent hydroxyethylammonium formate ionic liquid.

In this study, a number of 2-amino-4H-chromenes and spirochromenes were fabricated in a one-pot three-component synthesis manner from com. available chems. including phloroglucinol, malononitrile, and aldehydes/isatins with acceptable and easy efficiencies. This methodol. was performed in the presence of 2-hydroxyethylammonium formate as an effective and reusable ionic liquid catalyst. Water was selected as the reaction medium and the reaction was carried out at ambient temperature to create an environmentally friendly route. Other salient features of this method include catalyst chem. stability, good yields, short reaction times, and a simple work-up procedure.

Journal of the Chinese Chemical Society (Weinheim, Germany) 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, Quality Control of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mahajan, Sheena published the artcileMalononitrile-activated synthesis and anti-cholinesterase activity of styrylquinoxalin-2(1H)-ones, Product Details of C9H10O3, the main research area is quinoline quinoxaline methyl diastereoselective condensation aryl aldehyde malononitrile activator; styryl quinoxalinone preparation anticholinesterase activity mol modeling; methyl quinoxalinone diastereoselective condensation aryl aldehyde malononitrile activator.

A base-free malononitrile activated condensation of 3-methyl-6-R1-quinoxalin-2(1H)-ones (3MQ) with aryl aldehydes RCHO (R = Ph, 4-ClC6H4, PhCH:CH, thiophen-2-yl, etc.; R1 = H, NO2) for synthesis of styrylquinoxalin-2(1H)-ones (SQs) (E)-I in excellent yields has been described. In this reaction, malononitrile activates the aldehyde via Knoevenagel condensation towards reaction with 3MQ and gets liberated during the course of reaction to yield the desired SQs (E)-I. The SQs (E)-I were evaluated for in vitro cholinesterase inhibition and (E)-I (R = 4-F-3-BrC6H3) was found to display a mixed type of inhibition of AChE, which was supported by mol. modeling studies. The procedure was successfully applied to the synthesis the analogous styrylquinoxalines and styrylquinolines. This study has led to the discovery of a new chemotype for cholinesterase inhibition which might be useful in finding a remedy for Alzheimer’s disease.

RSC Advances 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, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hamilton, Joseph Z. published the artcileHydroxylamine catalyzed Nazarov cyclizations of divinyl ketones, Computed Properties of 21834-92-4, the main research area is divinyl ketone Nazarov cyclization hydroxylamine catalyst.

The first examples of iminium catalyzed Nazarov cyclizations of divinyl ketones are presented. Experiments describing hydroxylamine catalysis of the cyclization of eight α-alkoxy divinyl ketones (60-79% yield) and one unactivated divinyl ketone (38% yield) are reported. Ph substitution at the β-position of the divinyl ketone inhibits cyclization, whereas β-alkyl substituted α-alkoxy divinyl ketones readily cyclize.

Tetrahedron Letters published new progress about Divinyl ketones Role: RCT (Reactant), RACT (Reactant or Reagent). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Computed Properties of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shen, Jia-Huan published the artcileSynergistic Copper and Chiral Lewis Base Catalysis for the Asymmetric Synthesis of Pyrrolo[1,2-a]indoles, Formula: C9H10O3, the main research area is synergism copper Lewis base catalyst decarboxylative cycloaddition; pyrroloindole enantioselective diastereoselective preparation; ethynyl indoloxazolidone carboxylic acid decarboxylative cycloaddition copper Lewis base.

The first asym. decarboxylative [3+2]-cycloaddition of ethynyl indoloxazolidones I (R1 = H, 6-Cl, 7-MeO, 9-Me, etc.) with carboxylic acids R2CH2CO2H (R2 = Ph, 4-FC6H4, 3-thienyl, 2-naphthyl, etc.) has been developed under synergistic catalysis of copper and chiral Lewis base. This protocol provides a direct and modular approach to biol. important pyrrolo[1,2-a]indoles II bearing two vicinal stereogenic centers with excellent diastereo- and enantioselectivities (up to >20:1 dr and >99% ee). In addition, utility of this methodol. was demonstrated by a scaled-up reaction and several synthetic transformations of the cycloadduct.

Chinese Journal of Chemistry published new progress about [3+2] Cycloaddition reaction, stereoselective (decarboxylative). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chiasson, Audrey Isabel published the artcileNew zileuton-hydroxycinnamic acid hybrids: synthesis and structure-activity relationship towards 5-lipoxygenase inhibition, COA of Formula: C9H10O3, the main research area is benzothiophene hydroxycinnamic acid preparation SAR lipoxygenase inhibition mol docking; radical scavenging activity pharmacokinetic study; 5-Lipoxygenase inhibitors; anti-leukotrienes; hydroxyurea; inflammation; sinapic acid; zileuton.

A novel series of zileuton-hydroxycinnamic acid hybrids I (R1 = H, OH, OMe; n = 0, 1, 2, 3), II (R2 = C6H5, 4-OHC6H4, 2,6-(CH3)2C6H3, etc.) and III (R3 = H, OH, OMe; R4 = H, OH, OMe; R5 = H, OMe) were synthesized and screened as 5-lipoxygenase (5-LO) inhibitors in stimulated HEK293 cells and polymorphonuclear leukocytes (PMNL). Zileuton’s IV benzo[b]thiophene and hydroxyurea subunits combined with hydroxycinnamic acid esters’ ester linkage and phenolic acid moieties were investigated. Compound II (R2 = 3,5-(OMe)2-4-OHC6H2), bearing zileuton’s IV benzo[b]thiophene and sinapic acid phenethyl ester’s V α,α-unsaturated phenolic acid moiety II (R2 = 3,5-(OMe)2-4-OHC6H2), was shown to be equipotent to zileuton IV, the only clin. approved 5-LO inhibitor, in stimulated HEK293 cells. Compound II (R2 = 3,5-(OMe)2-4-OHC6H2) was three times as active as zileuton IV for the inhibition of 5-LO in PMNL. Compound III (R3 = OMe, R4 = OH, R5 = OMe), bearing the same sinapic acid (3,5-dimethoxy-4-hydroxy substitution) moiety as II (R2 = 3,5-(OMe)2-4-OHC6H2), combined with zileuton’s IV hydroxyurea subunit was inactive. This result shows that the zileuton’s IV benzo[b]thiophene moiety is essential for the inhibition of 5-LO product biosynthesis with hydrids. Unlike zileuton IV, compound II (R2 = 3,5-(OMe)2-4-OHC6H2) formed two π-π interactions with Phe177 and Phe421 as predicted when docked into 5-LO. Compound II (R2 = 3,5-(OMe)2-4-OHC6H2) was the only docked ligand that showed a π-π interaction with Phe177 which may play a part in product specificity as reported.

Molecules published new progress about Acid chlorides 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, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Soni, Vineet Kumar published the artcileReactivity Tuning for Radical-Radical Cross-Coupling via Selective Photocatalytic Energy Transfer: Access to Amine Building Blocks, Computed Properties of 104-01-8, the main research area is imine green preparation iridium photocatalyst; oxime ester decarboxylative radical cross coupling.

Reductive N-O bond cleavage has been widely explored for providing either N or O radical species for various coupling processes. Despite significant advances, this photoredox pathway is less appealing due to poor atom-economy, owing to the loss of one fragment during the transformation. In this regard, homolytic N-O bond cleavage by an energy transfer pathway to provide two key radicals would be highly desirable for overcoming the limitations with the use of one fragment. An exclusive energy transfer approach for the development of radical-radical C-N cross-coupling process by reactivity-tuning of the catalytic system is reported. The homolytic N-O bond cleavage of oxime esters in the presence of an Ir complex produces acyloxy and iminyl radicals, which underwent decarboxylative cross-coupling to yield valuable imines I (R = Bn, t-Bu, heptyl, etc.; R1 = Ph, 4-F3CC6H4, 4-ClC6H4, etc.; R2 = Me, 4-F3CC6H4, 2-pyridyl, etc.). Extensive photophys. and electrochem. measurements, as well as DFT studies, were carried out to probe the mechanism and revealed the operation of a Dexter-type energy transfer pathway. The synthetic utility of this method was explored by studying highly functionalized oxime esters, including derivatives of biol. active natural products and drug mols. Furthermore, in situ transformations of the imine products into pharmaceutically important amines were also demonstrated, showcasing the utility of the imine products as valuable amine building blocks.

ACS Catalysis published new progress about Acid chlorides 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, Computed Properties of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Vahdat, Seyed Mohammad published the artcileSulfonated organic heteropolyacid salts as a highly efficient and green solid catalysts for the synthesis of 1,8-dioxo-decahydroacridine derivatives in water, Application of 2,3-Dimethoxybenzaldehyde, the main research area is dioxo decahydroacridine preparation green chem; cyclohexanedione aldehyde amine ammonium acetate condensation ionic liquid.

Two nonconventional ionic liquids [MIMPS]3PW12O40 and [TEAPS]3PW12O40 as green and highly efficient solid acid catalysts for the synthesis of 1,8-dioxo-decahydroacridine derivatives were reported. The one-pot three component reaction of 1,3-cyclohexanediones, aromatic aldehydes and aromatic amines or ammonium acetate in water afforded the corresponding 1,8-dioxo-decahydroacridines I (R1 = H, Me; R2 = H, 3-O2N, 4-Cl, 2-OH, 4-OH, etc.; R3 = H, Ph, 4-MeC6H4, 4-MeOC6H4) in excellent yields. This reaction has been carried out in the presence of 1 mol% of catalysts at room temperature The reusability of the catalysts was demonstrated by a five-run test. Addnl., the catalysts pose several advantages including mild reaction conditions, cleaner reactions and shorter reaction times.

Arabian Journal of Chemistry published new progress about Acridines Role: SPN (Synthetic Preparation), PREP (Preparation). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Application of 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Alam, M. Mujahid published the artcileA facile and efficient synthesis of 1,8-dioxodecahydroacridines derivatives catalyzed by cobalt-alanine metal complex under aqueous ethanol media, HPLC of Formula: 86-51-1, the main research area is dioxodecahydroacridine preparation; aldehyde dimedone amine three component condensation cobalt alanine catalyst; 1,8-Dioxodecahydroacridine; Ammonium acetate; Cobalt–alanine metal complex; Dimedone; Multi component reaction (MCR); One-pot synthesis.

A facile and convenient method for the synthesis of acridines and its derivatives I (R = Ph, 2,3-dichlorophenyl, 3,4-dinitrophenyl, etc.; R1 = H, phenyl) developed through one-pot, three-component condensation reaction of aromatic aldehydes RCHO, 5,5-dimethyl-1,3-cyclohexanedione, aniline or ammonium acetate (H4NOAC) in the presence of a catalytic amount of cobalt-alanine metal complex using aqueous ethanol as a reaction medium is reported. The present novel methodol. offers several advantages over the traditional methods reported in the literature, such as mild reaction conditions, inexpensive catalyst, short reaction times, excellent yields of products, simplicity and easy workup.

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

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

van der Heijden, Gydo published the artcileEfficient Diastereoselective Three-Component Synthesis of Pipecolic Amides, Quality Control of 104-01-8, the main research area is pipecolic acid amide diastereoselective preparation; piperideine preparation Ugi reaction; argatroban stereoselective preparation; stereoselective Ugi reaction piperideine isocyanide carboxylic acid.

An efficient Ugi-type three-component reaction (U-3CR) of isocyanides, carboxylic acids and 4-substituted Δ1-piperideines for the synthesis of pipecolic amides such as I is reported. Hydrogenation of 4-substituted pyridines (prepared by alkylation of 4-picoline with alkyl bromides) yielded the 4-substituted piperidines or their hydrochloride salts; oxidation of the piperidines with NCS yielded the Δ1-piperideines which were used without purification The method was used to prepare the anticoagulant argatroban.

European Journal of Organic Chemistry published new progress about 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, Quality Control of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem