Tag: M.W=100-150

Cao, Qiang published the artcileCovalent organic framework-supported Zn single atom catalyst for highly efficient N-formylation of amines with CO2 under mild conditions, HPLC of Formula: 5961-59-1, the main research area is covalent organic framework supported zinc catalyst formylation amine CO2.

Transformation of CO2 into value-added chems. with efficient and recyclable catalyst is an effective way to reduce carbon emissions. It is valuable to develop an efficient catalyst that can promote the N-formylation reaction under mild conditions with a high activity and excellent recyclability. Single atom catalysts (SACs) possess ultimate atom utilization efficiency and outstanding catalytic performance. Herein, we synthesize Zn SACs (Zn-TpPa) anchored on a COF (TpPa-1) using a facile solution method. Catalyzed by Zn-TpPa, CO2 and N-methylamine are transformed into N-methylformanilide under mild reaction conditions with a TOF of 17,155 h-1, which is the highest among all reported recyclable Zn-based catalysts. Zn-TpPa can also catalyze N-formylation of many other amines with excellent yields. The higher reactivity was attributable to the well-dispersed Zn active sites on COF and outstanding adsorption of CO2 owing to high surface area of COF. Our research provides a facile method for constructing SACs as well as an effective pathway for CO2 transformation and environmental protection.

Applied Catalysis, B: Environmental published new progress about Covalent organic frameworks. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, HPLC of Formula: 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zheng, Xuexue published the artcileCharacterization of key aroma compounds and relationship between aroma compounds and sensory attributes in different aroma types of Fu brick tea, COA of Formula: C8H10O2, the main research area is Fu brick tea aroma compound sensory agent; (E,E)-2,4-nonadienal (PubChem CID: 5283339).; (E,Z)-2,6-nonadienal (PubChem CID: 643731); Benzyl alcohol (PubChem CID: 244); Different aroma types; Fu brick tea; Key aroma compounds; Multivariate statistical analysis; Sensory attributes; acetophenone (PubChem CID: 7410); dihydro-β-ionone (PubChem CID: 519382); hexanal (PubChem CID: 6184); linalool (PubChem CID: 6549); nerolidol (PubChem CID: 5284507); α-terpineol (PubChem CID: 17100); β-ionone (PubChem CID: 5352481).

Aroma is one of the most important sensory properties of tea. Floral-fungal aroma type, ripe-fungal aroma type and fresh-fungal aroma type were the main aroma types of Fu brick tea by QDA. A total of 112 volatile compounds were identified and quantified in tea samples by HS-SPME/GC-MS anal. Ten voaltiles in floral-fungal aroma type, eleven voaltiles in ripe-fungal aroma type, and eighteen voaltiles in fresh-fungal aroma type were identified as key aroma compounds for the aroma characteristics formation in three aroma types of Fu brick tea. In addition, PLS anal. revealed that 3,4-dehydro-β-ionone, dihydro-β-ionone, (+)-carotol and linalool oxide II were the key contributors to the ′floral and fruity′ attribute, α-terpineol contributed to woody and stale attributes, and thirteen aroma compounds related to green attribute. Taken together, these findings will provide new insights into the formation mechanism of different aroma characteristics in Fu brick tea.

Food Chemistry: X published new progress about Odor and Odorous substances. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, COA of Formula: C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Milic, Mira published the artcileNMR Quantification of Hydrogen-Bond-Accepting Ability for Organic Molecules, Computed Properties of 151-10-0, the main research area is hydrogen bond accepting ability NMR chem shift.

The hydrogen-bond-accepting abilities for more than 100 organic mols. are quantified using 19F and 31P NMR spectroscopy with pentafluorobenzoic acid (PFBA) and phenylphosphinic acid (PPA) as com. available, inexpensive probes. Anal. of pyridines and anilines with a variety of electronic modifications demonstrates that changes in NMR shifts can predict the secondary effects that contribute to H-bond-accepting ability, establishing the ability of PFBA and PPA binding to predict electronic trends. The H-bond-accepting abilities of various metal-chelating ligands and organocatalysts are also quantified. The measured Δδ(31P) and Δδp(19F) values correlate strongly with Hammett parameters, pKa of the protonated HBA, and proton-transfer basicity (pKBH+).

Journal of Organic Chemistry published new progress about Acidity (of protonated HBAs). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Computed Properties of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tan, Chen published the artcilePractical Synthesis of Phosphinic Amides/Phosphoramidates through Catalytic Oxidative Coupling of Amines and P(O)-H Compounds, Category: isoquinoline, the main research area is phosphinic amide phosphoramidate preparation; catalytic oxidative coupling amine organophosphorus compound green chem stereoselective; cross-coupling; late-stage functionalization; phosphinic amides; phosphoramidates; phosphorus.

Herein, we report a highly efficient ZnI2-triggered oxidative cross-coupling reaction of P(O)-H compounds and amines. This operationally simple protocol provides unprecedented generic access to phosphinic amides/phosphoramidate derivatives in good yields and short reaction time. Besides, the reaction proceeds under mild conditions, which avoids the use of hazardous reagents, and is applicable to scale-up syntheses as well as late-stage functionalization of drug mols. The stereospecific coupling is also achieved from readily available optically enriched P(O)-H compounds

Chemistry – A European Journal published new progress about Diastereoselective synthesis. 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

Viayna, Antonio published the artcileHolistic approach to anti-knock agents: A high-throughput screening of aniline-like compounds, Synthetic Route of 5961-59-1, the main research area is aniline compound antiknock fuel additive library screening.

The increasing concerns about greenhouse gas emissions are encouraging the search for efficient combustion technologies for transportation. A valuable strategy consists of tailoring the properties of fuels through addition of additives that might increase the octane number subject to the classification, labeling and packaging regulation of fuel quality. In this context, we present an integrated approach involving a high-throughput screening that relies on selected physicochem. factors of aniline-like compounds, measurements of structural resemblance and susceptibility to participate in chem. reactions with radical species, in conjunction with production viability as well as environmental and toxicol. risks. This process led to a final set of representative compounds that were chosen to explore their behavior as anti-knock additives. The suitability of these compounds was determined through assays performed to determine the impact on fuel volatility and RON booster efficiency in conjunction with a critical assessment of their eco/toxicol. risk estimated by means of a safety index. This holistic strategy led to the identification of N-methyl-p-anisidine, N’,N’-diethyl-2-methyl-p-phenylenediamine and N-nitroso-diphenylamine as promising anti-knock additives. This approach is proposed as an alternative strategy to the unsupervised exptl. screening of fuel additives.

Fuel published new progress about Gasoline antiknock additives. 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

Aegurla, Balakrishna published the artcileDehydrative C- and S-Alkylation: Access to Highly Substituted 1-Sulfonylpropanes, SDS of cas: 151-10-0, the main research area is aryl sulfonylpropane preparation; hydroxysulfone arene thiophenol dehydrative alkylation.

A dehydrative C- and S-alkylation procedure by nucleophilic substitution of γ-hydroxysulfones with arenes and thiophenols is reported. This study represents an elegant and ecol. concept to construct C-C and C-S bonds leading to unsym. 1,1- and 3,3-branched propanes. The γ-hydroxysulfones underwent BF3.OEt2-mediated dehydrative arylation and thiolation at room temperature and elimination at 40°. The nucleophile attack occurred on the less hindered side of a planar benzylic carbocation to furnish the title compounds with good diastereoselectivity.

Asian Journal of Organic Chemistry published new progress about Alkylation, stereoselective. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, SDS of cas: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liang, Qi published the artcileSynthesis of Phenanthridine and Quinoxaline Derivatives via Copper-Catalyzed Radical Cyanoalkylation of Cyclobutanone Oxime Esters and Vinyl Azides, Quality Control of 5961-59-1, the main research area is cyanoalkyl phenanthridine quinoxaline spiro compound preparation; cyclobutanone oxime ester vinyl azide radical cyanoalkylation copper catalyst.

A copper-catalyzed radical cyclization of cyclobutanone oxime esters and vinyl azide is described. This method provides facile access to cyanoalkyl-substituted phenanthridines I (R1 = H, 1-OMe, 3-Cl, etc; R2 = H, 8-CF3, 9-Me, etc.; R3 = H, CN, Ph, etc.) and quinoxalines II (R3 = H, COOMe, OBn, etc.; R4 = H, 8-Me, 7-Br, etc.) with excellent isolated yields. Moreover, these reactions proceed under mild conditions with a board substrate scope and excellent functional group tolerance.

Chinese Journal of Chemistry published new progress about Alkylation catalysts (cyano-). 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

Radhoff, Niklas published the artcileOxindole synthesis via polar-radical crossover of ketene-derived amide enolates in a formal [3 + 2] cycloaddition, Related Products of isoquinoline, the main research area is aryl amide cycloaddition; oxindole preparation.

Simple, efficient and transition-metal free method for the preparation of valuable and sterically hindered 3,3-disubstituted oxindoles via polar-radical crossover of ketene derived amide enolates. Various easily accessible N-alkyl and N-arylanilines are added to disubstituted ketenes and the resulting amide enolates undergo upon single electron transfer oxidation a homolytic aromatic substitution (HAS) to provided 3,3-disubstituted oxindoles in good to excellent yields. A variety of substituted anilines and a 3-amino pyridine engage in this oxidative formal [3 + 2] cycloaddition and cyclic ketenes provided spirooxindoles. Both substrates and reagents were readily available and tolerance to functional groups was broad.

Chemical Science published new progress about [3+2] Cycloaddition reaction. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Choi, Subin published the artcileElectrosynthesis of Dihydropyrano[4,3-b]indoles Based on a Double Oxidative [3+3] Cycloaddition, Product Details of C8H11NO, the main research area is pyranoindole electrosynthesis oxidative coupling indole enamine tandem electrocyclization; [3+3] cycloaddition; electrochemistry; hydrogen atom transfer; indoles; radical chemistry.

Oxidative [3+3] cycloadditions offer an efficient route for six-membered-ring formation. This approach has been realized based on an electrochem. oxidative coupling of indoles/enamines with active methylene compounds followed by tandem 6π-electrocyclization leading to the synthesis of dihydropyrano[4,3-b]indoles and 2,3-dihydrofurans. The radical-radical cross-coupling of the radical species generated by anodic oxidation combined with the cathodic generation of the base from O2 allows for mild reaction conditions for the synthesis of structurally complex heterocycles.

Angewandte Chemie, International Edition published new progress about [3+3] Cycloaddition reaction. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Product Details of C8H11NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhao, Xin published the artcileCu(II)-Catalyzed C2-site functionalization of p-aminophenols: an approach for selective cross-dehydrogenative aminations, Related Products of isoquinoline, the main research area is diaminophenol preparation; aryl amine aminophenol selective cross dehydrogenative amination copper catalyst.

A copper-catalyzed C2-site selective amination of p-aminophenol derivatives 4-RC6H4OH (R = phenylbenzylamino, piperidino, morpholino, etc.) with arylamines ArNHR1 (Ar = Ph, 3-methylphenyl, 2-isopropylphenyl, etc.; R1 = Me, Et) has been developed. This approach precludes both partners from prefunctionalization and yields single site selective aminated products 2-ArR1N-4-RC6H3OH. This reaction proceeds smoothly with air as a terminal oxidant to produce the corresponding C2-site functional aminophenol derivatives in moderate to good yields.

Organic Chemistry Frontiers published new progress about Amination catalysts (selective). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem