Tag: M.W=300-350

Sanyal, Utpal published the artcileLiquid chromatographic separation of derivatives of diospyrin, a bioactive bisnaphthoquinonoid plant-product, and analogous naphthyl compounds, SDS of cas: 2960-93-2, the publication is Journal of Chromatography A (2003), 1017(1-2), 225-232, database is CAplus and MEDLINE.

Isocratic reversed-phase liquid chromatog. (LC) method was developed using acetonitrile and water for the determination of diospyrin, a pharmacol. important bisnaphthoquinonoid plant-product. The method was validated for precision, accuracy and reproducibility, and was found to be linear over the concentration range of 1-1000 μg/mL; the limits of detection and quantitation were 8 and 20 ng, resp. The technique was used to determine the amount of diospyrin in plant extracts from four climatic regions in India. It was also applied for differentiation and separation of 27 naphthyl compounds While a composition of 50:50 was preferable for dimeric compounds, the composition 40:60 was a better choice for the monomers. Also, the isomeric α- and β-naphthols and their dimers could be distinguished by conversion into the resp. Me ethers.

Journal of Chromatography A published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, SDS of cas: 2960-93-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Xu, Bo published the artcileA low-cost spiro[fluorene-9,9′-xanthene]-based hole transport material for highly efficient solid-state dye-sensitized solar cells and perovskite solar cells, Product Details of C25H16O, the publication is Energy & Environmental Science (2016), 9(3), 873-877, database is CAplus.

A low-cost spiro[fluorene-9,9′-xanthene] (SFX) based organic hole transport material (HTM) termed X60 was designed and synthesized using a two-step synthetic route. Devices with X60 as HTM showed high power conversion efficiencies (PCEs) amounting to 7.30% in solid-state dye-sensitized solar cells (ssDSCs) and 19.84% in perovskite solar cells (PSCs), under 100 mW cm^-2 AM1.5G solar illumination. To the best of our knowledge, this is the first example of an easily synthesized spiro-structured HTM that shows comparable performance with respect to the well-known HTM Spiro-OMeTAD in both ssDSCs and PSCs. Furthermore, the facile synthesis of X60 from com. available starting materials makes this HTM very promising for large-scale industrial production in the future.

Energy & Environmental Science published new progress about 159-62-6. 159-62-6 belongs to naphthyridine, auxiliary class Other Aromatic Heterocyclic,Spiro, name is Spiro[fluorene-9,9′-xanthene], and the molecular formula is C5H10O2S, Product Details of C25H16O.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Coghlan, Daniel R. published the artcileSynthesis and antibacterial activity of some binaphthyl-supported macrocycles containing a cationic amino acid, COA of Formula: C22H18O2, the publication is Bioorganic & Medicinal Chemistry (2011), 19(11), 3549-3557, database is CAplus and MEDLINE.

As part of a program investigating antibacterial cyclic macrocycles containing a cationic amino acid with an internal aromatic hydrophobic scaffold, we previously reported a macrocycle anchored at the 3,3′-positions of a 1,1′-binaphthyl unit. This was prepared via key intermediates containing an internal allylglycine and an allyl-substituted binaphthyl unit for a subsequent ring-closing metathesis reaction. This study presents some structure-activity relationship studies with addnl. macrocycles based on this lead compound against Staphylococcus aureus together with the antibacterial activity of 2 related acyclic compounds

Bioorganic & Medicinal Chemistry published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, COA of Formula: C22H18O2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Himmelstrup, Jonas published the artcileEnantioselective aryl-aryl coupling facilitated by chiral binuclear gold complexes, Recommanded Product: 2,2′-Dimethoxy-1,1′-binaphthalene, the publication is Chemical Communications (Cambridge, United Kingdom) (2019), 55(86), 12988-12991, database is CAplus and MEDLINE.

Herein, we report stoichiometric investigations embodying the first highly enantioselective aryl-aryl coupling facilitated by a gold complex. With up to 91% ee, this is the first demonstration of a transmetalation and C(sp²)-C(sp²) reductive elimination sequence with high enantioselectivity using a gold complex. The results offer a basis for development of enantioselective gold-catalyzed aryl-aryl coupling reactions.

Chemical Communications (Cambridge, United Kingdom) published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, Recommanded Product: 2,2′-Dimethoxy-1,1′-binaphthalene.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Wongma, Krittaphat published the artcileSynthesis of bridged biarylbisquinones and effects of biaryl dihedral angles on photo- and electro-chemical properties, HPLC of Formula: 2960-93-2, the publication is Tetrahedron (2016), 72(12), 1533-1540, database is CAplus.

A series of bridged biarylbisquinones, QBINOLs 1-4, and their corresponding monomers, QNaphs 5-6, were designed to demonstrate the influence of biaryl conformation on the photo- and electro-chem. properties of the mols. All target compounds were synthesized from the Diels-Alder reaction between silyl enol ethers of the corresponding naphthyl or binaphthyl derivatives and p-benzoquinone. Addition of an OMe auxochrome or formation of the dimeric structures affect the absorption spectra and the energy band gap (Eg), but not the reduction potentials of the mols. Narrowing the dihedral angles of the QBINOLs by shortening methylene bridges limited the contribution of bridging OR auxochromes and therefore resulted in lower HOMO levels and larger Eg.

Tetrahedron published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C5H5F3O2, HPLC of Formula: 2960-93-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Serenko, Olga A. published the artcileA novel Ziegler-Natta-type catalytic system-TiCl₄/2,2′-dimethoxy-1,1′-binaphthalene/Et₃Al₂Cl₃/Bu₂Mg for production of ultrahigh molecular weight polyethylene nascent reactor powders, suitable for solvent-free processing, HPLC of Formula: 2960-93-2, the publication is Polymers (Basel, Switzerland) (2018), 10(11), 1281/1-1281/12, database is CAplus and MEDLINE.

A series of ultrahigh mol. weight polyethylenes with viscosity-average mol. weights in the range of 1.6-5.6 x 10⁶ have been prepared by using a novel Ziegler-Natta-type catalytic system-TiCl₄/2,2′-dimethoxy-1,1′-binaphthalene/Et₃Al₂Cl₃/Bu₂Mg at different temperatures (T_poly) in the range between 10 and 70°C in toluene. The morphol. of the nascent reactor powders has been studied by SEM, wide-angle X-ray diffraction, and the DSC melting behavior. Polymers are suitable for the modern processing methods-the solvent-free solid-state formation of super high-strength (tensile strength over 1.8-2.5 GPa) and high-modulus (elastic modulus up to 136 GPa) oriented film tapes. With decrease of T_poly, the drawability of the reactor powders increased significantly.

Polymers (Basel, Switzerland) published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C11H10O, HPLC of Formula: 2960-93-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Fu, Zhengjiang published the artcileSynthesis of (±)-3,3′-diphenyl-2,2′-binaphthol via different routes using Pd and Ni as catalyst respectively, HPLC of Formula: 2960-93-2, the publication is Chemical Papers (2021), 75(2), 831-836, database is CAplus.

In this report, two routes for the synthesis of (±)-3,3′-diphenyl BINOL I (R = Ph, R¹ = H) via (±)-3,3′ bis-halogenated BINOLs intermediates I (R = Br, R¹ = methoxymethyl; R = I, R¹ = Me) using (±)-BINOL I (R = H, R¹ = H) as starting material have been established. Both routes are four-step reactions, characterized by the use of different catalysts in the third step, wherein the total yield of the first route is 45%, while overall yield of the second route is 51% yield.

Chemical Papers published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, HPLC of Formula: 2960-93-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Wang, Dong published the artcileTrifluoromethyl Sulfoxides: Reagents for Metal-Free C-H Trifluoromethylthiolation, Product Details of C22H18O2, the publication is Angewandte Chemie, International Edition (2020), 59(37), 15918-15922, database is CAplus and MEDLINE.

Indoles, pyrroles, thiophenes, a benzothiophene, a benzofuran, and arenes underwent metal-free regioselective trifluoromethylthiolation with trifluoromethyl sulfoxides RCH₂S(:O)CF₃ (R = Ph, EtO₂C) mediated by triflic anhydride and diethylamine in acetonitrile or nitromethane to yield heteroaryl and aryl trifluoromethyl thioethers. An aryl(ethoxycarbonylmethyl)(trifluoromethyl)sulfonium triflate was isolated as a trifluoromethylthiolation intermediate and its structure determined by X-ray crystallog., supporting an interrupted Pummerer reaction mechanism for the trifluoromethylthiolation.

Angewandte Chemie, International Edition published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C7H16ClNO2, Product Details of C22H18O2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Ikai, Tomoyuki published the artcileChiral stationary phases consisting of π-conjugated polymers bearing glucose-linked biphenyl units: reversible switching of resolution abilities based on a coil-to-helix transition, SDS of cas: 2960-93-2, the publication is Polymer Chemistry (2017), 8(29), 4190-4198, database is CAplus.

A series of optically active π-conjugated polymers (poly-2-poly-5) consisting of alternating thieno[3,4-b]thiophene and glucose-linked biphenyl units were synthesized through copolymerizations by Sonogashira-Hagihara cross-coupling. Absorption and CD spectroscopy and theor. calculations revealed that poly-2 undergoes a conformational transition between the random-coil and helix in both solution and the solid state in response to the external solvent environment (chloroform and acetonitrile). Coated-type chiral stationary phases (CSPs) for high-performance liquid chromatog. were prepared from both the random-coil and helical poly-2, and the influence of the polymer backbone structure on the chiral recognition ability was evaluated. The two CSPs showed somewhat complementary resolution abilities and the kinds of resolved racemates were dependent on the backbone conformation. In addition, an immobilized-type CSP with universal solvent durability was also prepared through copper-catalyzed click cyclization between an alkyne-appended poly-2 analog and an azide-functionalized silica gel. The resulting CSP displayed repeatable switching of the chiral recognition ability based on a coil-to-helix transition of the polymer backbone by alternate column treatment with common organic solvents, such as chloroform and acetonitrile.

Polymer Chemistry published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, SDS of cas: 2960-93-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Tazerouti, Fairouz published the artcileAnalysis of the mechanism of retention on a modified β-cyclodextrin/silica chiral stationary phase using a computational chemical method, HPLC of Formula: 2960-93-2, the publication is Journal of Liquid Chromatography & Related Technologies (2007), 30(20), 3043-3057, database is CAplus.

Quant. anal. of the retention of various optically active solutes on a modified β-cyclodextrin/silica chiral stationary phase was achieved using a mol. mechanics calculation of the CAChe program. Using computational chem. calculations, the various interactions between each enantiomer and the modified β-cyclodextrin chiral selector were calculated as energy contributions. These interaction energy values were then compared to the exptl. values measured in normal phase liquid chromatog. Among the obtained predicted values, the best correlation was observed between the mol. interaction energy and the selectivity factor, α, calculated for the studied racemates.

Journal of Liquid Chromatography & Related Technologies published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C20H19NO4, HPLC of Formula: 2960-93-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem