Category: 140-28-3

Sanchez-Carnerero, Esther M. published the artcileSpeeding up heterogeneous catalysis with an improved highly reusable catalyst for the preparation of enantioenriched secondary alcohols, COA of Formula: C16H20N2, the publication is Reactive & Functional Polymers (2017), 23-30, database is CAplus.

A new catalytic heterogeneous system, very efficient and highly reusable, for the preparation of enantioenriched secondary alcs. through the addition of diethylzinc to benzaldehyde has been developed. This system is based on a chiral bis(hydroxyamide) ligand supported on crosslinked polystyrene. The catalyst has been shown to be very efficient, leading to the corresponding secondary alc. with an enantiomeric excess of 93% in a time as short as 2 h and using just 4% of the heterogeneous catalyst and just 1.5 equiv of the organozinc reagent. We have demonstrated that the new catalyst is very stable and can be efficiently recycled with no decrease in yield or enantioselectivity. The presented system has an unquestionable interest for the potential transfer of the reaction to the industry by using catalytic fluidized-bed reactors.

Reactive & Functional Polymers published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, COA of Formula: C16H20N2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Golchoubian, Hamid published the artcileSolvato- and thermochromism study in oxalato-bridged dinuclear copper(II) complexes of bidentate diamine ligands, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine, the publication is Polyhedron (2017), 68-75, database is CAplus.

Two new oxalato complexes [Cu₂(L)₂(¦Ì-ox)(MeOH)₂](ClO₄)₂ (1) and [Cu₂(L)₂(¦Ì-ox)](NO₃)₂ (2), where ox = oxalato and L = N,N’-dibenzylethane-1,2-diamine, were prepared and characterized by elemental anal., IR and UV-visible spectroscopies and molar conductance measurements. The crystal structure of compound 1 was determined by single-crystal x-ray anal. The compounds are solvatochromic and their solvatochromism was studied with different solvent parameter models using the stepwise multiple linear regression (SMLR) method with SPSS/PC software. The donor power of the solvent plays the most important role in the observed pos. solvatochromism of the compounds The complexes show irreversible thermochromism in solution due to the substitution of the weakly coordinated counterions and coordinated solvents by solvent mols.

Polyhedron published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Talotta, Carmen published the artcileSynthesis and supramolecular features of hybrid POM/onium solid-state assemblies, COA of Formula: C16H20N2, the publication is Supramolecular Chemistry (2016), 28(5-6), 403-417, database is CAplus.

Polyoxomolybdate-based organic-inorganic hybrid architectures were synthesized and characterized by x-ray crystallog. The supramol. assemblies present rows of metallic clusters H-bonded by ammonium cations, with a 1:2 molybdate/ammonium ratio. The organic moieties of the ammonium cations establish hydrophobic contact among them such as van der Waals, C-H¡¤¡¤¡¤¦Ð and ¦Ð¡¤¡¤¡¤¦Ð interactions that stabilize the supramol. architectures. In particular, for compound (5) the n-alkyl tails pack closely together giving a lipid-like bilayer. In compound (6), the aromatic Ph rings of the organic cation allow the stabilization of the supramol. architecture by C-H¡¤¡¤¡¤¦Ð and ¦Ð¡¤¡¤¡¤¦Ð interactions. Regarding the x-ray structure of the compound (11), the tetraanionic octa-molybdate [Mo₈O₂₆]^4- cluster is surrounded by four Et-triphenyl-phosphonium cations. Running along the b-axis open channels are occupied by DMF solvent mols. A soaking experiment in n-pentane with the corresponding crystals of compound 11 afforded a crystal structure very different from the native one.

Supramolecular Chemistry published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C5H6BNO2, COA of Formula: C16H20N2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Iancu, Gabriela Mariana published the artcileEvolution of syphilis incidence in Sibiu county (Romania) over a period of 10 years (2009-2018), HPLC of Formula: 140-28-3, the publication is Experimental and Therapeutic Medicine (2021), 22(2), 803, database is CAplus and MEDLINE.

Syphilis is the most common sexually transmitted disease that mainly affects socially active people, with a fluctuating worldwide incidence over the years. A retrospective study was conducted over a period of 10 years (2009-2018) that included 396 patients with syphilis diagnosed and monitored by Sibiu County Emergency Clin. Hospital, Romania. During this period (2009-2018), we observed a decrease in the new cases of syphilis by 35.90%, and the average syphilis incidence was 9.90 new cases per 100,000 inhabitants. Syphilis was diagnosed more frequently in men with an average age of 35.39 years, from urban areas, with and educational level of grades 9-12, unmarried, workers, or without occupation. Out of the 396 patients with syphilis, about 6% were HIV coinfected. Over half of the HIV coinfected cases were declared MSM (men who have sex with men), and 40% of these cases were registered in 2018. The most common clin. stage of syphilis was the latent form (67.93%). Regarding the syphilis treatment regimen, we noted the transition from the classic regimen with benzathine-penicillin G (100% in 2009) to alternative therapies (mainly with cephalosporins) in 2018 (56.86%). Our findings showed that in the last 10 years in our county, the incidence of syphilis had a downward trend, but with an increase in syphilis-HIV co-infection and neurosyphilis cases.

Experimental and Therapeutic Medicine published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, HPLC of Formula: 140-28-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Bellini, Clement published the artcileSequential Barium-Catalysed N-H/H-Si Dehydrogenative Cross-Couplings: Cyclodisilazanes versus Linear Oligosilazanes, Application In Synthesis of 140-28-3, the publication is Chemistry – A European Journal (2016), 22(44), 15733-15743, database is CAplus and MEDLINE.

Starting from Ph₃SiH, the barium precatalyst Ba[CH(SiMe₃)₂]₂¡¤(THF)₃ was used to produce the disilazane Ph₃SiN(Bn)SiPh₂NHBn (4) by sequential N-H/H-Si dehydrogenative couplings with BnNH₂ and Ph₂SiH₂. Substrate scope was extended to other amines and hydrosilanes. This smooth protocol gives quant. yields and full chemoselectivity. Compound 4 and the intermediates Ph₃SiNHBn and Ph₃SiN(Bn)SiHPh₂ were structurally characterized. Further attempts at chain extension by dehydrocoupling of Ph₂SiH₂ with 4 instead resulted in cyclization of this compound, forming the cyclodisilazane c-(Ph₂Si-NBn)₂ (5) which was crystallog. authenticated. The ring-closure mechanism leading to 5 upon release of C₆H₆ was determined by complementary exptl. and theor. (DFT) investigations. Ba[CH(SiMe₃)₂]₂¡¤(THF)₃ and 4 react to afford the reactive Ba{N(Bn)SiPh₂N(Bn)SiPh₃}₂, which was characterized in situ by NMR spectroscopy. Next, in a stepwise process, intramol. nucleophilic attack of the metal-bound amide on the terminal silicon atom generates a five-coordinate silicate. It is followed by turnover-limiting ¦Â-C₆H₅ transfer to barium; this releases 5 and forms a transient [Ba]-Ph species, which undergoes aminolysis to regenerate [Ba]-N(Bn)SiPh₂N(Bn)SiPh₃. DFT computations reveal that the irreversible production of 5 through such a stepwise ring-closure mechanism is much more kinetically facile (¦¤G^¡Ù=26.2 kcal mol^-1) than an alternative ¦Ò-metathesis pathway (¦¤G^¡Ù=48.2 kcal mol^-1).

Chemistry – A European Journal published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Application In Synthesis of 140-28-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Park, Sei-Kyoung published the artcileInhibition of A¦Â42 oligomerization in yeast by a PICALM ortholog and certain FDA approved drugs, Application of N1,N2-Dibenzylethane-1,2-diamine, the publication is Microbial Cell (2016), 3(2), 53-64, database is CAplus and MEDLINE.

The formation of small A¦Â42 oligomers has been implicated as a toxic species in Alzheimer disease (AD). In strong support of this hypothesis we found that overexpression of Yap1802, the yeast ortholog of the human AD risk factor, phosphatidylinositol binding clathrin assembly protein (PICALM), reduced oligomerization of A¦Â42 fused to a reporter in yeast. Thus we used the A¦Â42-reporter system to identify drugs that could be developed into therapies that prevent or arrest AD. From a screen of 1,200 FDA approved drugs and drug-like small compounds we identified 7 drugs that reduce A¦Â42 oligomerization in yeast: 3 antipsychotics (bromperidol, haloperidol and azaperone), 2 anesthetics (pramoxine HCl and dyclonine HCl), tamoxifen citrate, and minocycline HCl. Also, all 7 drugs caused A¦Â42 to be less toxic to PC12 cells and to relieve toxicity of another yeast AD model in which A¦Â42 aggregates targeted to the secretory pathway are toxic. Our results identify drugs that inhibit A¦Â42 oligomers from forming in yeast. It remains to be determined if these drugs inhibit A¦Â42 oligomerization in mammals and could be developed as a therapeutic treatment for AD.

Microbial Cell published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Application of N1,N2-Dibenzylethane-1,2-diamine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Slitikov, P. V. published the artcileAminomethylation of naphthalen-2-ol and naphthalene-2,7-diol, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine, the publication is Russian Journal of Organic Chemistry (2016), 52(10), 1432-1435, database is CAplus.

Reactions of secondary aliphatic and heterocyclic diamines with formaldehyde and naphthalen-2-ol or naphthalene-2,7-diol afforded the corresponding Mannich bases I (R = H, OH; X = (CH₂)₂, (CH₂)₃; R¹ = CH₃, C₂H₅,CH₂C₆H₅). The formation of strong intramol. hydrogen bonds O-H ¡¤ ¡¤ ¡¤ N in the mols. of some products was detected by IR and ¹H NMR spectroscopy.

Russian Journal of Organic Chemistry published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C6H10O3, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

McMurtry, Brandon M. published the artcileContinuous Nucleation and Size Dependent Growth Kinetics of Indium Phosphide Nanocrystals, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine, the publication is Chemistry of Materials (2020), 32(10), 4358-4368, database is CAplus.

Aminophosphines derived from N,N’-disubstituted ethylenediamines (R-N(H)CH₂CH₂N(H)-R; R = ortho-tolyl, Ph, benzyl, iso-Pr, and n-octyl) were used to adjust the kinetics of InP nanocrystal formation by more than 1 order of magnitude. UV-visible absorption and ³¹P NMR measurements demonstrate that the rate of nanocrystal formation is limited by the precursor reactivity. At low temperature (180¡ãC), crystal nucleation is concurrent with growth throughout the reaction, rather than occurring in a burst at early times. The low temperature produces a narrow range of small sizes (d = 4.2-4.9 nm) regardless of the precursor used. Higher temperatures (up to 270¡ãC) promote growth to larger sizes (d ¡Ü 7.8 nm), shorten the nucleation period, and create conditions where the final size is controlled by the precursor conversion reactivity. The temperature dependence is proposed to arise from growth kinetics that slow as the nanocrystal size increases, a novel surface attachment limited size distribution-focusing mechanism. Such a mechanism supports a narrow size distribution without separating the nucleation and growth phases.

Chemistry of Materials published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Rosen, Tomer published the artcileZinc Complexes of Sequential Tetradentate Monoanionic Ligands in the Isoselective Polymerization of rac-Lactide, Product Details of C16H20N2, the publication is Chemistry – A European Journal (2016), 22(33), 11533-11536, database is CAplus and MEDLINE.

Zinc complexes of {ONNN}-type sequential tetradentate monoanionic ligands reacted with diethylzinc to give the mononuclear ethylzinc complexes. The benzyloxy complexes were formed readily and were found to be highly active as well as living/immortal catalysts for ring-opening polymerization of rac-lactic acid with a clear isospecific inclination. Chiral gas chromatog. anal. revealed a mild preference for a given lactide enantiomer by the chiral catalysts.

Chemistry – A European Journal published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Product Details of C16H20N2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Yun Soo Choi published the artcileStereoselective substitution of configurationally labile ¦Á-bromo aryl-acetates with amines and azlactones by L-threonine-mediated crystallization-induced dynamic resolution, SDS of cas: 140-28-3, the publication is European Journal of Organic Chemistry (2016), 2016(14), 2539-2546, database is CAplus.

We developed a highly stereoselective C-N and C-C bond-forming reaction by carrying out a crystallization-induced dynamic resolution (CIDR) of ¦Á-bromo arylacetates followed by a stereoselective substitution reaction with an amine or azlactone nucleophile. Applications of this synthetic method to the preparation of highly enantioenriched nitrogen-containing six-membered heterocycles and ¦Á,¦Â-disubstituted aspartates are also presented.

European Journal of Organic Chemistry published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C4H11NO, SDS of cas: 140-28-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia