Tag: M.W=100-150

Sahoo, Rajata Kumar; Mahato, Mamata; Jana, Achintya; Nembenna, Sharanappa published the artcile< Zinc Hydride-Catalyzed Hydrofuntionalization of Ketones>, SDS of cas: 403-41-8, the main research area is zinc guanidinate hydride catalyst hydrosilylation hydroboration ketone.

Three new dimeric bis-guanidinate zinc(II) alkyl, halide, and hydride complexes [LZnEt]2 (1), [LZnI]2 (2) and [LZnH]2 (3) (I – III, resp., R = 2,6-Et2C6H3 ) were prepared Compound 3 was successfully employed for the hydrosilylation and hydroboration of a vast number of ketones. The catalytic performance of 3 in the hydroboration of acetophenone exhibits a turnover frequency, reaching up to 5800 h-1, outperforming that of reported zinc hydride catalysts. Notably, both intra- and intermol. chemoselective hydrosilylation and hydroboration reactions have been investigated.

Journal of Organic Chemistry published new progress about Alkoxysilanes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, SDS of cas: 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Aisala, Heikki; Sola, Juha; Hopia, Anu; Linderborg, Kaisa M.; Sandell, Mari published the artcile< Odor-contributing volatile compounds of wild edible Nordic mushrooms analyzed with HS-SPME-GC-MS and HS-SPME-GC-O/FID>, Related Products of 104-76-7, the main research area is mushroom volatile compound; Aromagram; Gas chromatography–olfactometry; Mushrooms; Odor; SPME.

Although Nordic wild edible mushrooms offer a wide range of different odors their scientific examination has been scarce. The aim of this study was to characterize the aroma compounds of four Finnish wild mushroom species with trained assessors using gas chromatog.-olfactometry as well as gas chromatog.-mass spectrometry. Headspace volatiles were extracted from sous vide cooked mushroom samples (Boletus edulis, Lactarius camphoratus, Cantharellus cibarius and Craterellus tubaeformis) using solid-phase microextraction Odor-contributing compounds were measured with two columns of differing polarity using the detection frequency method. Compounds were identified based on reference compounds, linear retention indexes, odor descriptions, and mass spectrometry. Both the volatile compound profiles and the aromagrams were distinct with characteristic compounds for each species. The results demonstrate that especially saturated and unsaturated aldehydes and ketones contribute to the odor of the studied wild mushrooms. This thorough comparison also indicates compounds linked to the sensory properties of mushrooms.

Food Chemistry published new progress about Hydrocarbons Role: ANT (Analyte), PRP (Properties), ANST (Analytical Study). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Related Products of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Jing; Bian, Xiaoqiang; Rapp, Graeme; Lang, James; Montoya, Alejandro; Trethowan, Richard; Bouyssiere, Brice; Portha, Jean-Francois; Jaubert, Jean-Noel; Pratt, Peter; Coniglio, Lucie published the artcile< From ethyl biodiesel to biolubricants: Options for an Indian mustard integrated biorefinery toward a green and circular economy>, Category: alcohols-buliding-blocks, the main research area is Brassica ethyl biodiesel biolubricant biorefinery.

This work aims to analyze whether Indian mustard can be harnessed within a biorefinery system to generate energy carriers and high value-added products. Within this objective, two options of harnessing Indian mustard seed oil (IMSO) were investigated, the first for the production of Et biodiesel (IMSOEEs) and the second for the production of a biolubricant (IMSO2E1HEs) by transesterification of the unpurified IMSOEEs with 2-ethyl-1-hexanol (2E1H). Furthermore, low cost and environmentally-friendly conversion processes were targeted. The biofuel was obtained under mild conditions of ethanolysis (35°C, atm. pressure, ethanol to oil molar ratio of 8, 1.1 wt% KOH, and 50 min) carried out in two-stages separated by addition of recycled glycerol, and followed by dry-purification with Indian mustard stems-based adsorbent. In order to enhance biolubricant yield, reactive distillation with optimized operating pressure was selected (0.05 bar, 70°C, 2 wt% KOH, 2E1H to IMSOEEs molar ratio of 2, 65 min), followed by bubble-washing (assisted with citric acid) and then vacuum distillation (inferior to 0.01 bar). The produced IMSOEEs met the basic biodiesel properties with a satisfactory ester content (95.8 wt%). Similarly, a high conversion of IMOEEs (93 wt%) was reached for the biolubricant, leading to an IMSO2E1HE product that exhibited satisfactory properties, and thus has the potential to act as a biolubricant. Nevertheless, these results could be improved with a pre-treatment of the departure IMSO to remove species that are not glycerides, such as glucosinolates. Thereby, ensuring that the produced Et biodiesel conforms strictly to industry specifications.

Industrial Crops and Products published new progress about Biodiesel fuel. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ferreira, Aurelia R. O.; Silvestre-Albero, Joaquin; Maier, Martin E.; Ricardo, Nagila M. P. S.; Cavalcante, Celio L. Jr.; Luna, F. Murilo T. published the artcile< Sulfonated activated carbons as potential catalysts for biolubricant synthesis>, HPLC of Formula: 104-76-7, the main research area is sulfonated activated carbon potential catalyst biolubricant synthesis.

In this study, sulfonated activated carbons have been prepared, under different conditions, with the purpose of evaluating the effect of the nature and amount of sulfonic surface groups on the esterification reaction of free fatty acids (FFA) with different long-chain alcs. The synthesized catalysts were characterized using different techniques and 1H NMR was used for monitoring the reaction products. The modifications of the surface functionalities were assessed by XPS and Thermogravimetric anal. (TGA), while changes in the porous network and morphol. of the samples were evaluated before and after the treatment of the original activated carbon sample. XPS results showed the presence of two types of sulfur, one from thiophenic sulfur (present on all materials, including the unmodified sample), and the other from sulfonic groups (SO3H), at 168 eV (present only in the modified samples). These catalysts were applied in the esterification reaction and presented excellent catalytic performances, while the original activated carbon exhibited conversions similar to reactions without any catalyst. On the other hand, the conversion of fatty acids when using the modified carbons improves significantly with values up to ∼100% to mono alcs. and 70% to trimethylolpropane.

Molecular Catalysis published new progress about Esterification. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, HPLC of Formula: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mondal, Akash; Sahoo, Manoj Kumar; Subaramanian, Murugan; Balaraman, Ekambaram published the artcile< Manganese(I)-Catalyzed Sustainable Synthesis of Quinoxaline and Quinazoline Derivatives with the Liberation of Dihydrogen>, Application of C7H9NO, the main research area is manganese catalyzed sustainable synthesis quinoxaline quinazoline derivative dehydrogenative coupling.

Direct synthesis of N-heterocycles via the acceptorless dehydrogenative coupling is very challenging and scarcely reported under 3d transition-metal catalysis. Here, we have developed an efficient Mn(I)-catalyzed sustainable synthesis of various quinoxalines from 1,2-diaminobenzenes and 1,2-diols via the acceptorless dehydrogenative coupling reaction. Further, this strategy was successfully applied for the unprecedented synthesis of quinazolines by the reaction of 2-aminobenzyl alc. with primary amides. The present protocol provides an atom-economical and sustainable route for the synthesis of various quinoxaline and quinazoline derivatives by employing an earth-abundant manganese salt and simple phosphine-free NNN-tridentate ligand.

Journal of Organic Chemistry published new progress about Amides Role: RCT (Reactant), RACT (Reactant or Reagent). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Application of C7H9NO.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Luo, Jiabin; Cui, Chuanguo; Xiao, Zhiyin; Zhong, Wei; Lu, Chunxin; Jiang, Xiujuan; Li, Xueming; Liu, Xiaoming published the artcile< Iron(0) tricarbonyl η4-1-azadiene complexes and their catalytic performance in the hydroboration of ketones, aldehydes and aldimines via a non-iron hydride pathway>, Product Details of C8H9FO, the main research area is iron tricarbonyl azadiene hydroboration catalyst ketone aldehyde aldimine mechanism; crystal structure mol iron tricarbonyl azadiene complex preparation protonation.

Six iron(0) tricarbonyl complexes (1a-f) with a η4-1-azadiene moiety were prepared and their performance in the hydroboration of unsaturated organic compounds was investigated. All the complexes exhibit catalytic activity towards hydroboration of ketones, aldehydes and aldimines with pinacolborane (HBpin) as a hydride source to lead to secondary alcs., primary alcs., and secondary amines, resp., after hydrolysis of the hydroboration products. Of the iron(0) tricarbonyl complexes, complex 1e is the most robust one and was employed throughout the catalytic investigation. Its preference towards the three types of substrates is as follows: aldimines > aldehydes ≫ ketones. In total, 24 substrates were examined for the catalytic hydroboration reactivity and generally, isolation yields ranging from 40% to 95% were achieved. Mechanistic investigation suggests that the catalytic hydroboration of the substrates proceeds via intramol. hydride transfer without going through an Fe-H intermediate. As indicated by 1H NMR spectroscopic monitoring, the substrates and the borane agent bind to the iron center and the imine N atom, resp., which facilitates the hydride transfer by activating the B-H bond and polarizing the double bond of the substrates.

Dalton Transactions published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Product Details of C8H9FO.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Xiao, Zihui; Yang, Hui; Yin, Shuai; Zhang, Jian; Yang, Zhenhua; Yuan, Kedong; Ding, Yi published the artcile< Electrochemical reduction of functionalized carbonyl compounds: enhanced reactivity over tailored nanoporous gold>, Recommanded Product: (4-Ethynylphenyl)methanol, the main research area is reusable nanoporous gold catalyst preparation pore size carbonyl reduction; carbonyl compound diphenylsilane gold nanocatalyst electrochem reduction chemoselective; alc preparation.

The effect of the pore size of nanoporous gold (NPG) on electrochem. reduction of functionalized carbonyl compounds was investigated. NPG with a pore size of ∼30 nm significantly enhanced the reactivity with high chemoselectivity at a low-potential. Typically, p-nitrobenzaldehyde reduction demonstrated a high turnover frequency (TOF) up to 232000 h-1.

Nanoscale published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Recommanded Product: (4-Ethynylphenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Guoqi; Wu, Jing; Zheng, Shengping; Neary, Michelle C.; Mao, Jincheng; Flores, Marco; Trovitch, Ryan J.; Dub, Pavel A. published the artcile< Redox-Noninnocent Ligand-Supported Vanadium Catalysts for the Chemoselective Reduction of C=X (X = O, N) Functionalities>, Reference of 403-41-8, the main research area is vanadium ligand catalyst reduction ketone aldehyde imine ester carboxamide.

Catalysis is the second largest application for V after its use as an additive to improve steel production Mol. complexes of vanadium(V) are particularly useful and efficient catalysts for oxidation processes; however, their ability to catalyze reductive transformations has yet to be fully explored. Here the authors report the first examples of polar organic functionality reduction mediated by V. Open-shell VIII complexes that feature a π-radical monoanionic 2,2′:6′,2”-terpyridine ligand (Rtpy•)- functionalized at the 4′-position (R = (CH3)3SiCH2, Ph) catalyze mild and chemoselective hydroboration and hydrosilylation of functionalized ketones, aldehydes, imines, esters, and carboxamides with turnover numbers (TONs) of up to ∼1000 and turnover frequencies (TOFs) of up to ∼500 h-1. Computational evaluation of the precatalyst synthesis and activation revealed underappreciated complexity associated with the redox-active tpy chelate.

Journal of the American Chemical Society published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Reference of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vielhaber, Thomas; Faust, Kirill; Topf, Christoph published the artcile< Group 6 Metal Carbonyl Complexes Supported by a Bidentate PN Ligand: Syntheses, Characterization, and Catalytic Hydrogenation Activity>, HPLC of Formula: 403-41-8, the main research area is phosphinoethylamino chromium carbonyl complex preparation catalyst hydrogenation benzaldehyde; molybdenum phosphinoethylamino carbonyl complex preparation catalyst hydrogenation benzaldehyde; tungsten phosphinoethylamino carbonyl complex preparation catalyst hydrogenation benzaldehyde; crystal structure phosphinoethylamino chromium molybdenum tungsten carbonyl complex; mol structure phosphinoethylamino chromium molybdenum tungsten carbonyl complex.

The authors report on the preparation of P-N donor ligand complexes [M(CO)4(PN)], where M = Cr, Mo, W and PN is 2-(diphenylphosphino)ethylamine. The organometallic compounds were readily obtained upon reacting the resp. metal hexacarbonyls with equimolar amounts of the pertinent ligand in the presence of Et4NBr. The PN-ligated metal carbonyls were fully characterized by standard spectroscopic techniques and x-ray crystallog. The ability of the title compounds to function as homogeneous hydrogenation catalysts was probed in the reduction of acetophenone and benzaldehyde derivatives to yield the corresponding alcs. The reaction setup was easily assembled by simply combining the components in the autoclave on the bench outside an inert-gas-operated glovebox system.

Organometallics published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, HPLC of Formula: 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Qu, Peiyuan; Kuepfert, Michael; Jockusch, Steffen; Weck, Marcus published the artcile< Compartmentalized Nanoreactors for One-Pot Redox-Driven Transformations>, Product Details of C8H9FO, the main research area is micellar compartmentalized nanoreactor catalyst preparation redox deracemization secondary alc; polyoxazoline synthesis nanoreactor.

This contribution introduces poly(2-oxazoline)-based shell cross-linked micelles (SCMs) as nanoreactors to realize one-pot redox-driven deracemizations of secondary alcs. in aqueous media. TEMPO and Rh-TsDPEN moieties are spatially positioned into the hydrophilic corona and the hydrophobic micelle core, resp. TEMPO catalyzes the oxidation of racemic secondary alcs. into ketones, while Rh-TsDPEN catalyzes the asym. transfer hydrogenation (ATH) of these ketones to afford enantioenriched secondary alcs. Both catalysts, the Rh-TsDPEN complex and TEMPO, are incompatible with each other and the SCMs are designed to provide indispensable catalyst site isolation. Kinetic studies show that the SCMs enhance the reactivity of the immobilized catalysts, in comparison to those for the unsupported analogs under the same reaction conditions. Our nanoreactors can perform deracemizations on a broad range of secondary alc. substrates and are reusable in a continuous manner while maintaining high activity.

ACS Catalysis published new progress about ESR (electron spin resonance). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Product Details of C8H9FO.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts