Tag: M.W=100-150

Braun, Carolin published the artcilePlanar-chiral [2.2]Paracyclophane-based Pyridonates as Ligands for Tantalum-catalyzed Hydroaminoalkylation, HPLC of Formula: 22483-09-6, the main research area is planar chiral paracyclophane pyridonate ligand tantalum catalyzed hydroaminoalkylation.

By using planar chiral [2.2]paracyclophane-containing N,O-chelating ligands for tantalum-catalyzed hydroaminoalkylation, one of the most versatile catalytic systems for this reaction to date was obtained [e.g., 4-methoxy-N-methylaniline + 1-octene I (90%)]. Convenient Csp3-Csp3 bond formation of amines with terminal and internal alkenes was enabled by the same in situ synthesized catalytic system of [2.2]paracyclophane-based pyridonates and Ta(CH2TMS)3Cl2 that shows also very promising results for N-containing heterocycles.

ChemCatChem published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent) (internal). 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, HPLC of Formula: 22483-09-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Hui-Min published the artcileDehydrogenation of Alcohols to Carboxylic Acid Catalyzed by in Situ-Generated Facial Ruthenium-CPP Complex, Related Products of alcohols-buliding-blocks, the main research area is carboxylic acid preparation dehydrogenation alcs facial Ruthenium phosphine catalyst.

A selective catalytic system for the dehydrogenation of primary alcs. to carboxylic acids using a facial ruthenium complex generated in situ from the [Ru(COD)Cl2]n and a hybrid N-heterocyclic carbene (NHC)-phosphine-phosphine ligand (CPP) has been first reported. The facial coordination model was unveiled by NMR anal. of the reaction mixture Such a fac-ruthenium catalyst system exhibited high catalytic activity and stability, and a high turnover number of 20 000 could be achieved with catalyst loading as low as 0.002 mol %. The exceedingly high catalyst stability was tentatively attributed to both the anchoring role of NHC and the hemi-lability of phosphines. The catalytic system also features a wide substrate scope. In particular, the facial coordination of CPP ligands was found to be beneficial for sterically hindered alcs., and ortho-substituted benzylic alcs. and bulky adamantanyl methanol as well as cholesterol were all found to be viable dehydrogenation substrates.

Journal of Organic Chemistry published new progress about Benzoic acids Role: SPN (Synthetic Preparation), PREP (Preparation). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wong, Shaio Wen published the artcileCatalysis in competing isocyanate reactions, Category: alcohols-buliding-blocks, the main research area is polyurethane formation model reaction kinetics; phenyl isocyanate reaction kinetics butanol; tin catalyst isocyanate reaction butanol; amine catalyst isocyanate reaction butanol; water effect isocyanate reaction butanol.

The kinetics of the model reaction between PhNCO and BuOH for polyurethane formation was studied in MeCN at 50°. Effects of various catalysts, such as an organotin compound, dibutyltin dilaurate, and tertiary amines, Dabco, N,N,N’,N’,N”-pentamethyldipropylenetriamine (I), N,N’,N”-tris(3-dimethylaminopropyl)-3-hexahydrotriazine, and N,N,N’-trimethylaminoethylethanolamine, on the reaction rate and the formation of reaction products were studied. The resulting products using I as catalyst were Bu phenylcarbamate, Bu α,γ-diphenylallophanate, and tri-Ph isocyanurate. The presence of water in the reaction retarded the disappearance of NCO groups as well as the trimer formation.

Advances in Urethane Science and Technology published new progress about Polyurethanes Role: SPN (Synthetic Preparation), PREP (Preparation). 2212-32-0 belongs to class alcohols-buliding-blocks, name is N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, and the molecular formula is C7H18N2O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bechara, I. S. published the artcileUnusual catalysts for flexible urethane foams, Name: N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, the main research area is polyurethane foam hydroxyethylethylenediamine catalyst; ethanolamine aminoethyl polyurethane catalyst.

Dabco T [trimethyl(hydroxyethyl)ethylenediamine] [2212-32-0] type catalysts are unusual in that they are able to promote allophanate and isocyanurate formation, depending upon the concentration of NCO groups. They are also unique among tertiary amines in their ability to equalize the rate of urea and urethane formation. When used as cocatalysts, they provide good indentation load deflection (ILD) and compression set. Too high a catalyst concentration will increase the ILD and resiliency while adversely affecting compression set due to excessive allophanate and biuret formation. When flexible foams are made using these catalysts, optimum properties are obtained at NCO index of 105-16, and tin (cocatalyst) level as low as possible.

Journal of Cellular Plastics published new progress about Polyurethanes Role: SPN (Synthetic Preparation), PREP (Preparation). 2212-32-0 belongs to class alcohols-buliding-blocks, name is N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, and the molecular formula is C7H18N2O, Name: N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wu, Yao published the artcileA Copper Iodide Cluster-Based Metal-Organic Polyhedra for Photocatalytic Click Chemistry, Product Details of C8H14O, the main research area is phenyl triazole preparation click chem; aryl acetylene benzyl azide alkyne cycloaddition copper iodide photocatalyst.

Herein, a copper(I) iodide cluster-based metal-organic polyhedra (Cu3I3)4L14 (1) ((L1 = 1,3,5-trispyridylsulfanylethyl)-2,4,6-triethylbenzene, 2-mercaptopyridine) is synthesized. Due to the abnormal geometry of [Cu3I3] SBUs, MOP 1 exhibits a half-truncated cube topol., which is rarely observed up to date. Compared with commonly used metal ion or clusters, the coordination bond between the [Cu3I3] SBU and the ligand is rather labile in solution evidenced by the theor. calculations and exptl. results. Interestingly, the liable [Cu3I3] SBU endows MOP 1 to photocatalyze the azide-alkyne cycloaddition reaction in aqueous solution with high efficiency, excellent tolerance (>80% isolated yield for 18 examples), and good recyclability. The mechanistic studies reveal a photoinduced electron transfer from the MOP to azide, which is unusual in copper-catalyzed click reactions.

Small Structures published new progress about 1,3-Dipolar cycloaddition catalysts (azide-alkyne, regioselective). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, Product Details of C8H14O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Fillery, Shaun M. published the artcileExpeditious Access to Functionalized Tricyclic Pyrrolo-Pyridones via Tandem or Sequential C-N/C-C Bond Formations, Computed Properties of 22483-09-6, the main research area is tricyclic pyrrolopyridone preparation; bromopyridone bromoaniline cyclic ketone Buchwald Hartwig Heck Fischer indole.

The facile synthesis of both saturated and unsaturated tricyclic pyrrolo-pyridones starting from a single readily available, common monocyclic reagent has been developed. An intermol. annulation via a tandem Buchwald-Hartwig/Heck reaction led to the synthesis of β-carbolinones. The analogous semisatd. tricyclic pyrrolo-pyridones were prepared in good to excellent yields by sequential Buchwald-Hartwig and Fischer indole reactions. The methods feature mild reaction conditions and good functional group tolerance.

Organic Letters published new progress about Anilines Role: RCT (Reactant), RACT (Reactant or Reagent) (bromo). 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Computed Properties of 22483-09-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Xiao published the artcileReduced Graphene Oxide Supported Ag Nanoparticles: An Efficient Catalyst for CO2 Conversion at Ambient Conditions, Category: alcohols-buliding-blocks, the main research area is reduced graphene oxide supported silver nanoparticle catalyst preparation; alkylidene carbamate oxazolidinone preparation; propargylic alc amine carbon dioxide carboxylative cyclization.

A highly efficient carboxylative cyclization of propargylic alcs. with CO2 under atm. pressure catalyzed by silver (0) nanoparticles decorated reduced graphene oxide (Ag-rGO) is reported. Ag-rGO was fully characterized by scanning electron microscope spectra (SEM), transmission electron microscopy (TEM), Fourier transform IR (FT-IR) spectra, Raman spectra and XPS. Notably, Ag-rGO can be also applied to the construction of other value-added chems. (β-oxopropylcarbamates and 2-oxazolidinones) from CO2 at ambient conditions. In addition, Ag-rGO is stable and reusable, which shows the potential for the practical application for CO2 capture and utilization (CCU).

ChemCatChem published new progress about Alcohols, propargyl Role: RCT (Reactant), RACT (Reactant or Reagent). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gu, Ai-Ling published the artcileHighly Efficient Conversion of Propargylic Alcohols and Propargylic Amines with CO2 Activated by Noble-Metal-Free Catalyst Cu2O@ZIF-8, Product Details of C8H14O, the main research area is alkylidene cyclic carbonate oxazolidinone preparation; propargylic alc amine carbon dioxide cycloaddition; metalorganic framework ZIF8 encapsulated cuprous oxide nanoparticle preparation catalyst; CO2; Metal-Organic Frameworks; Noble-Metal-Free; Propargylic Alcohols; Propargylic Amines.

The cyclization reactions of propargylic alcs. and propargylic amines with CO2 are important in industrial applications, but it was a great challenge that non-noble-metal catalysts catalyzed both reactions under mild conditions. Herein, the catalyst Cu2O@ZIF-8 was prepared by encapsulating Cu2O nanoparticles into robust ZIF-8, and it can effectively catalyze the cyclization of both propargylic alcs. and propargylic amines with CO2 into valuable α-alkylidene cyclic carbonates and oxazolidinones with turnover numbers (TONs) of 12.1 and 19.6, which can be recycled at least five times. The mechanisms were further uncovered by NMR, FTIR, 13C isotope-labeling experiments and DFT calculations, in which Cu2O and DBU can synergistically activate the C≃C bond and the hydroxy/amino group of substrates. Importantly, it is the first example of a noble-metal-free catalyst that can catalyze both propargylic alcs. and propargylic amines with CO2 simultaneously.

Angewandte Chemie, International Edition published new progress about Alcohols, propargyl Role: RCT (Reactant), RACT (Reactant or Reagent). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, Product Details of C8H14O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Du, Minchen published the artcileAn efficient and recyclable AgNO3/ionic liquid system catalyzed atmospheric CO2 utilization: Simultaneous synthesis of 2-oxazolidinones and α-hydroxyl ketones, Product Details of C8H14O, the main research area is oxazolidinone hydroxyl ketone preparation green chem; propargyl alc aminoethanol carbon dioxide three component reaction; silver nitrate ethyl methylimidazolium acetate catalyst.

Oxazolidinones I (R = (CH2)2OH, Bn, 4-MeC6H4CH2, etc.) and α-hydroxyl ketones CH3C(O)C(R1)(R2)OH (R1 = Me, Et; R2 = Me, Et, i-Bu, Ph; -R1R2- = -(CH2)5-) are two series of fine chems. that have been generally utilized in biol., pharmaceutical, and synthetic chem. Herein, a AgNO3/ionic liquid (IL) catalytic system was developed for the simultaneous synthesis of these compounds through the atom-economical three-component reactions of propargyl alcs., 2-aminoethanols, and CO2. Notably, this system behaved excellent catalytic activity with the lowermost metal loading of 0.25 mol%. Meanwhile, it is the first reported metal-catalyzed system that could efficiently work under atm. CO2 pressure and be recycled at least five times. Evaluation of the green metrics proved the AgNO3/IL-catalyzed processes to be relatively more sustainable and greener than the other Ag-catalyzed examples. Further mechanistic investigations revealed the derivative active species of N-heterocyclic carbene (NHC) silver complexes and CO2 adducts generated during the process. Subsequently, their reactivity in this reaction was assessed for the first time, which was finally identified as beneficial for the catalytic activity.

Journal of Catalysis published new progress about Alcohols, propargyl Role: RCT (Reactant), RACT (Reactant or Reagent). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, Product Details of C8H14O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Islam, Sk Safikul published the artcileZinc (II) incorporated porous organic polymeric material (POPs): A mild and efficient catalyst for synthesis of dicoumarols and carboxylative cyclization of propargyl alcohols and CO2 in ambient conditions, Recommanded Product: 3,5-Dimethylhex-1-yn-3-ol, the main research area is dicoumarol preparation green chem; hydroxycoumarin aryl aldehyde condensation zinc catalyst; alkylidene cyclic carbonate preparation green chem; propargyl alc carbon dioxide cyclization reaction zinc catalyst.

Zinc (II) incorporated porous organic polymer catalyst, Zn@BBAPA has been designed, synthesized and characterized thoroughly by XRD, EDX, SEM, HR-TEM, FTIR spectra, UV-vis spectra, TGA and N2 absorption desorption isotherm. An eco-friendly porous Zn@BBAPA catalyst exhibits highly efficient catalytic performance for the production of α-alkylidene cyclic carbonates I (R1 = Me; R2 = Me, Et, isobutyl; R1R2 = -(CH2)5-) by using propargylic alcs. HCCC(R1)(R2)OH via CO2 fixation. In addition the catalyst shows outstanding efficiency for the synthesis of various dicoumarol derivatives II (R3 = 4-methoxyphenyl, furan-2-yl, thiophen-2-yl, etc.) in green solvent medium (water) from 4-hydroxycoumarin and aromatic aldehydes R3CHO. Presence of super hydrophobic nature and electron-donation character of NH2 groups of BBA framework with high surface area is main aspect to be responsible for elevated catalytic performance as well as improvement in catalyst stability and enabling a good recyclability.

Molecular Catalysis published new progress about Alcohols, propargyl Role: RCT (Reactant), RACT (Reactant or Reagent). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, Recommanded Product: 3,5-Dimethylhex-1-yn-3-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts