Day: November 18, 2022

Cetti, Jonathan published the artcileModeling the Vapor-Liquid Equilibria of Ionic Liquids Containing Perfume Raw Materials, COA of Formula: C11H12O3, the main research area is model vapor liquid equilibrium ionic perfume.

In this work, the vapor-liquid equilibrium of binary and multinary systems comprise perfume raw materials and ionic liquids have been computed using two different models: COSMO-RS, a solvation model, and UNIFAC, a group contribution method. For systems already well-known in the literature, a comparison with exptl. data was performed, and good agreement was observed with both models. Although UNIFAC was not applicable to nonparametrized ionic liquids, COSMO-RS proved very reliable in predicting the vapor-liquid equilibrium of solutions of perfume raw materials in new-to-the-world ionic liquids This opens the door for the prediction and modeling of new formulations for novel consumer products, prior to embarking on detailed exptl. investigations.

Journal of Chemical & Engineering Data published new progress about Cosmetic fragrance products. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, COA of Formula: C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Nicastro, Gloria published the artcileControlled Hydrolysis of Odorants Schiff Bases in Low-Molecular-Weight Gels, Synthetic Route of 1205-17-0, the main research area is Schiff base gels odorants hydrolysis; Schiff base; fragrance; gel; hydrolysis; perfumery; self-assembly.

Imines or Schiff bases (SB) are formed by the condensation of an aldehyde or a ketone with a primary amine, with the removal of a water mol. Schiff bases are central mols. in several biol. processes for their ability to form and cleave by small variation of the medium. We report here the controlled hydrolysis of four SBs that may be applied in the fragrance industry, as they are profragrances all containing odorant mols.: Me anthranilate as primary amine, and four aldehydes (cyclamal, helional, hydroxycitronellal and triplal) that are very volatile odorants. The SB stability was assessed over time by HPLC-MS in neutral or acidic conditions, both in solution and when trapped in low mol. weight gels. Our results demonstrate that it is possible to control the hydrolysis of the Schiff bases in the gel environment, thus tuning the quantity of aldehyde released and the persistency of the fragrance.

International Journal of Molecular Sciences published new progress about Cosmetic fragrance products. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Synthetic Route of 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Bello, Patrice published the artcileUpping fragrance intensity via cyclodextrins: expert noses and headspace/SPME-GC confirm effects, Recommanded Product: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is cosmetics cyclodextrin perfume skin fragrance volatile compound.

The aim of the study is efficacy and potential benefits of cyclodextrins in delivering fragrances with and without CDs were compared using headspace/solid-phase microextraction gas chromatog. All measurements and assessments were carried out on the volar forearms(s) of one Caucasian subject in a controlled environment: 25 ± 1°C and 30% ± 5% relative humidity. GC test protocol: The GC test protocol included: 1) washing the subject′s forearm three times with ethanol and allowing it to air-dry: 2) spraying 200 mg of a test EdT three times and allowing it to air-dry for 2 min; 3) a 20-min stabilization phase: 4) a 20-min extraction phase; 5) a 2-min desorption phase; and 6) CO-MS anal. To trap gas, a glass bell jar (105 cm3) was used, along with a syringe incorporating an SPME fiber in polydimethylsiloxane (PDMS), to absorb volatile compounds Olfactory test: The olfactory test procedure involved washing both of the subject′s forearms three times with ethanol and allowing them to air-dry, then spraying -200 mg of a test EdT three times and allowing it to air-dry for 2 min. Twenty perfume experts then smelled the two forearms to make assessments. Measurements and assessments were performed every- three hours to determine the perfume evolution on skin. Results from the headspace/SPME-GC anal. indicated that initially (T0), the fragrance samples with and without CD had the same perfume intensity. Three hours later, however (T+3 h), the CD-containing perfume was approx. 50% more intense than the perfume without CD.

Perfumer & Flavorist published new progress about Cosmetic fragrance products. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Recommanded Product: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tang, Hai-Jun published the artcileVisible-Light-Assisted Gold-Catalyzed Fluoroarylation of Allenoates, Name: 4-Methoxyphenylacetic acid, the main research area is gold catalyst fluoroarylation allenoate; allenoates; arylation; fluorination; gold; redox catalysis.

A strategically novel synthetic method for the fluoroarylation of allenic ester was developed that enables the expedient construction of a host of β-fluoroalkyl-containing cinnamate derivatives The reaction proceeds through visible-light-promoted gold redox catalysis, occurs smoothly under very mild reaction conditions, accommodates a large variety of functional groups, and more importantly allows the incorporation of fluorine and aryl groups with excellent regio- and stereoselectivity. The concomitant activation mode for both the allene motif and the hydrogen fluoride is key for the success of the reaction.

Angewandte Chemie, International Edition published new progress about Arylation (fluoroarylation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Name: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Takenouchi, Osamu published the artcilePredictive performance of the human Cell Line Activation Test (h-CLAT) for lipophilic chemicals with high octanol-water partition coefficients, Name: 5-Methyl-2-phenylhex-2-enal, the main research area is lipophilic chem skin sensitization hCLAT toxicity allergic contact dermatitis; octanol water partition coefficient.

To meet the urgent need for a reliable alternative test for predicting skin sensitizing potential of many chems., we have developed a cell-based in vitro test, human Cell Line Activation Test (h-CLAT). However, the predictive performance for lipophilic chems. in the h-CLAT still remains relatively unknown. Moreover, it’s suggested that low water solubility of chems. might induce false neg. outcomes. Thus, in this study, we tested relatively low water soluble 37 chems. with log Kow values above and below 3.5 in the h-CLAT. The small-scale assessment resulted in nine false neg. outcomes for chems. with log Kow values greater than 3.5. We then created a dataset of 143 chems. by combining the existing dataset of 106 chems. and examined the predictive performance of the h-CLAT for chems. with a log Kow of less than 3.5; a total of 112 chems. from the 143 chems. in the dataset. The sensitivity and overall accuracy for the 143 chems. were 83% and 80%, resp. In contrast, sensitivity and overall accuracy for the 112 chems. with log Kow values below 3.5 improved to 94% and 88%, resp. These data suggested that the h-CLAT could successfully detect sensitizers with log Kow values up to 3.5. When chems. with log Kow values greater than 3.5 that were deemed pos. by h-CLAT were included with the 112 chems., the sensitivity and accuracy in terms of the resulting applicable 128 chems. out of the 143 chems. became 95% and 88%, resp. The use of log Kow values gave the h-CLAT a higher predictive performance. Our results demonstrated that the h-CLAT could predict sensitizing potential of various chems., which contain lipophilic chems. using a large-scale chem. dataset.

Journal of Toxicological Sciences published new progress about Allergic contact dermatitis. 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

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

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

Filatov, Vadim E. published the artcilecis-Diastereoselective Synthesis of Spirooxindolo-β-Lactams by Staudinger Cycloaddition with TsCl as Activating Co-reagent, Computed Properties of 104-01-8, the main research area is spirooxindolo beta lactam preparation cis diastereoselective Staudinger cycloaddition TsCl.

A convenient and versatile one-pot method for synthesis of 1,3-bis-aryl spirooxindolo-β-lactams from isatin Schiff bases and substituted phenylacetic acids using ketene-imine cycloaddition reaction with TsCl for a ketene generation has been developed. The reaction procedure does not require absolute solvents and unstable starting reagents. The studied reactions lead to cis-diastereoselective β-lactam formation for all tested phenylacetic acids except 4-MeOC6H4CH2COOH. An increase of trans-diastereomers yields with increasing temperature and solvent polarity was demonstrated.

ACS Omega published new progress about Diastereoselective synthesis. 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

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

Young, Claire M. published the artcileEvaluating aryl esters as bench-stable C(1)-ammonium enolate precursors in catalytic, enantioselective Michael addition-lactonizations, Product Details of C9H10O3, the main research area is keto ester preparation enantioselective diastereoselective; trifluoromethyl enone trichlorophenyl ester Michael lactonization methanolysis isothiourea catalyst; dihydropyranone preparation enantioselective diastereoselective; trichlorophenyl ester trifluoromethyl enone Michael addition lactonization isothiourea catalyst.

An evaluation of a range of aryl, alkyl and vinyl esters as prospective C(1)-ammonium enolate precursors in enantioselective Michael addition-lactonization processes with (E)-trifluoromethylenones using isothiourea catalysis was reported. Electron deficient aryl esters were required for reactivity, with 2,4,6-trichlorophenyl esters providing optimal product yields. Catalyst screening showed that tetramisole was the most effective isothiourea catalyst, giving the desired dihydropyranone products I [Ar = Ph, 4-MeC6H4, 4-F3CC6H4; Ar1 = Ph] in excellent yield and stereoselectivity (up to 90 : 10 dr and 98 : 2 er). The scope and limitations of this process were evaluated, with a range of keto ester products II [Ar1 = Ph, 2-furyl, 4-MeC6H4, 3-MeOC6H4, 4-BrC6H4] being generated after ring-opening with MeOH to give stereodefined dihydropyranones with excellent stereocontrol (10 examples, typically ∼90 : 10 dr and >95 : 5 er).

Organic & Biomolecular Chemistry published new progress about Diastereoselective synthesis. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem