Tag: M.W=300-350

Geng, Xin published the artcileThe Hairpin Furans: Easily Prepared Hybrids of Helicenes and Twisted Acenes, Application of 2,2′-Dimethoxy-1,1′-binaphthalene, the publication is Angewandte Chemie, International Edition (2015), 54(47), 13957-13960, database is CAplus and MEDLINE.

The thermal reaction of a cyclopentadienone with 6,6′-dimethoxy-5,5′-binaphthoquinone gives, in a single step, a mol. ribbon consisting of two twisted aromatic systems fused to a heteropentahelicene e. g., I. Such mols. constitute a new class of chiral polycyclic aromatic compounds, the “hairpin furans”.

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 C22H18O2, Application of 2,2′-Dimethoxy-1,1′-binaphthalene.

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

Castanet, Anne-Sophie published the artcileAsymmetric Suzuki cross-coupling reaction: chirality reversal depending on the palladium-chiral phosphine ratio, Safety of 2,2′-Dimethoxy-1,1′-binaphthalene, the publication is Tetrahedron: Asymmetry (2002), 13(6), 659-665, database is CAplus.

Suzuki cross-coupling reaction with sterically hindered arylboronic acids is reported. Good yields are obtained by using DME and cesium fluoride in the presence of Pd(OAc)₂ and triphenylphosphine. The catalytic asym. reaction between 2-methoxy-1-naphthylboronic acid (I) and 1-iodo-2-methoxynaphthalene (II) was studied in the presence of a palladium-chiral phosphine catalyst. When the reaction was carried out with Pd(OAc)₂ and (R)-BINAP (vs. (R)-TolBINAP), the enantioselection was dramatically influenced by the phosphine/palladium ratio.

Tetrahedron: Asymmetry 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, Safety of 2,2′-Dimethoxy-1,1′-binaphthalene.

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

Peluso, Paola published the artcileComparative HPLC Enantioseparation of Thirty-Six Aromatic Compounds on Four Columns of the Lux Series: Impact of Substituents, Shapes and Electronic Properties, HPLC of Formula: 2960-93-2, the publication is Chirality (2013), 25(11), 709-718, database is CAplus and MEDLINE.

With the aim to define a combined computational/chromatog. empirical approach useful for the HPLC method development of new chiral compounds, 36 racemic aromatic compounds with different chem. structures were used as test probes on four polysaccharide-based chiral stationary phases (CSPs) of the Lux series, Lux Cellulose-1, Lux Cellulose-2, Lux Cellulose-4, and Lux Amylose-2, using classical n-hexane/2-propanol mixtures as mobile phase. Electrostatic potential surfaces (EPSs) determined using D. Functional Theory (DFT) calculations were used to derive size, shape, and electronic properties of each analyte. Then a comparative HPLC screening was carried out to evaluate the impact of substituents, shapes, and electronic properties of the analytes on the chromatog. behavior as the column changes. The four CSPs showed good complementary recognition ability. The elution sequence was determined in 30 cases out of 36. The success rate to afford baseline separations (R_s â‰?1.5) was estimated: 29 compounds out of 36 showed baseline enantioseparation on at least one of the four selected CSPs. The combined computational-chromatog. screening furnished useful collective structure-chromatog. behavior relations and a map of the chiral discrimination abilities of the considered CSPs towards the analytes. On this basis, the chromatog. behavior of new analytes on a set of polysaccharide-based CSPs can be mapped through the qual. correlation of chromatog. parameters (k, α, R_s) to computed mol. properties of the analytes. Chirality 00:000-000, 2013. © 2013 Wiley Periodicals, Inc.

Chirality 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

Trotta, Francesco published the artcileA straightforward synthesis in aqueous medium of enantiomerically enriched S-(-)-2,2′-dihydroxy-1,1′-binaphthyl, Recommanded Product: 2,2′-Dimethoxy-1,1′-binaphthalene, the publication is Environmental Science and Pollution Research International (2003), 10(3), 144-146, database is CAplus and MEDLINE.

Chiral, atropisomeric 2,2′-dihydroxy-1,1′-binaphthyl has been extensively used to direct asym. processes. Its key role in asym. catalysis has spurred efforts to synthesize it in the optically pure form, but the reported synthetic routes have a significant environmental impact. In an aqueous peroxidase-cyclodextrin system the oxidative coupling of 2-naphthol took place very rapidly in almost quant. yield and resulted in an enantiomeric excess. This one-pot synthesis does not require any organic solvents and oxidizing metal cations.

Environmental Science and Pollution Research International 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 C18H34N4O5S, Recommanded Product: 2,2′-Dimethoxy-1,1′-binaphthalene.

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

Kielar, Katarzyna published the artcileSynthesis of Sym-Phos {dicyclohexyl-[3-(2,4,6-trimethoxyphenyl)-4-methoxynaphth-2-yl]phosphine} ligand and its application in Suzuki-Miyaura reaction, SDS of cas: 2960-93-2, the publication is Chemik (2012), 66(6), 585-594, database is CAplus.

Authors present cheap, quick and efficient three-phase synthesis of air-resistant Sym-Phos ligand {dicyclohexyl[3-(2,4,6-trimethoxyphenyl)-4-methoxynaphth-2-yl]phosphine} of C,P-type complexes. Sym-Phos creates effective palladium catalysts to be used in difficult cases of cross-coupling reactions carried out under favorable conditions for the environment (water, unplugged flask, moderate temperature).

Chemik 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

Wang, Pengyang published the artcileNovel Axially Chiral Ligand-Enabled Copper-Catalyzed Asymmetric Oxidative Coupling of 2-Naphthols for the Synthesis of 6,6′-Disubstituted BINOLs, Quality Control of 2960-93-2, the publication is Organic Letters (2022), 24(12), 2321-2326, database is CAplus and MEDLINE.

Novel axially chiral ligands such as I [R = H, 1-naphthyl, 9-anthryl, etc.] were designed and synthesized by merging the chelating picolinic acid with substituted BINOLs. The in-situ-prepared copper catalysts from the ligands and CuI enable the asym. oxidative coupling of 2-naphthols, affording 6,6′-disubstituted BINOLs such as II [R¹ = H, i-Pr, Ph, etc.] in up to 89% yield with good enantioselectivities (up to 96:4 e.r.).

Organic Letters 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 C9H8O4, Quality Control of 2960-93-2.

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

Guan, Yu-qiao published the artcileOne-step synthesized novel spiro[fluorene-9,9′-xanthene]-based materials as highly efficient blue phosphorescent hosts in organic light-emitting devices, Related Products of naphthyridine, the publication is Wuli Huaxue Xuebao (2017), 33(4), 816-822, database is CAplus.

We synthesized a series of novel spiro[fluorene-9,9′-xanthene] (SFX)-based host materials via a one-step palladium-catalyzed cross-coupling reaction. These materials have high triple energy levels and high yield, and thus can be used as hosts for blue phosphors. Blue phosphorescent organic light-emitting devices (PHOLEDs) with a bis(3,5-difluoro-2-(2-pyridyl)phenyl-(2-carboxypyri-dyl)iridium(III) (FIrpic) emission were fabricated. Furthermore, we applied cohosts composed of one of the new synthesized materials and the hole transport material di-[4-(N,N-ditolyl-amino)-phenyl]cyclohexane (TAPC) to the blue PHOLEDs to successfully acquire efficient blue emissions. The SFX-based material provided efficient energy transfer while TAPC improved the mobility of the cohost as well as reduced the working voltage. Maximum current efficiencies of 22.56 and 25.93 cd·A^-1 and the maximum brightnesses of 6421 and 6196 cd·m^-2 were obtained for the PHOLEDs with TAPC: 2-(9-phenyl-fluoren-9-yl)spiro[fluorene-9,9′-xanthene] (PF-SFX) and TAPC: 2-(9-(4-(octyloxy)-phenyl)-9H-fluoren-9-yl)spiro[fluorene-9, 9′-xanthene] (C8OPF-SFX) cohosts, resp. The exptl. results obtained for the four SFX-based host materials were enough to declare that SFX is an effective main unit that can be used to build efficient host materials for blue phosphors containing only C, H, and O basic elements.

Wuli Huaxue Xuebao 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 C25H16O, Related Products of naphthyridine.

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

Huang, Junmin published the artcileImprovement of proline enantioselective stationary phases by replacing the 9-fluorenylmethoxycarbonyl group, Computed Properties of 2960-93-2, the publication is Journal of Chromatography A (2006), 1109(2), 307-311, database is CAplus and MEDLINE.

The role of 9-fluorenylmethoxycarbonyl (Fmoc) in previously reported proline enantioselective stationary phases was studied. Seven stationary phases in which the Fmoc group was replaced by other groups were prepared and evaluated in normal phase mode. The Fmoc group proved nonessential for the broad enantioselectivity observed, as the stationary phase with a trimethylacetyl (Tma) group proved much more effective than the one with the Fmoc group. For the 53 analytes studied, the stationary phase with the Tma group resolved 39, while the one with the Fmoc group resolved 19. Separation factors achieved for the stationary phase with the Tma group are also significantly higher than those for the stationary phase with the Fmoc group. The stationary phase with the (-)-2-(2,4,5,7-tetranitro-9-fluorenylideneaminooxy)propionyl (Tapa) group provides very different selectivity profile when compared to the one with the Tma group. In most of the proline stationary phases studied, pi-pi interaction is not the dominant interaction for the enantioselective recognition.

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, Computed Properties of 2960-93-2.

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

Huang, Junmin published the artcileImprovement of proline chiral stationary phases by varying peptide length and linker, HPLC of Formula: 2960-93-2, the publication is Journal of Chromatography A (2006), 1113(1-2), 109-115, database is CAplus and MEDLINE.

Seven new stationary phases with different number of proline units and/or different linkage to silica gel were prepared and evaluated to improve the performance of proline chiral stationary phases. The average separation factor achieved with the 53 analytes increases with the number of proline units in the stationary phases. When the proline peptides are directly attached to the 3-methylaminopropyl silica gel without using the 6-methylaminohexanoic acid linker, the stationary phases perform better overall. For decaproline chiral stationary phase 8, the separation also depends on the mobile phase system used. For this stationary phase, the CH₂Cl₂/hexanes/2-propanol system significantly outperforms the 2-propanol/hexanes system. For the 53 analytes tested, the separation factors achieved with this stationary phase compare well with those for three com. columns.

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, HPLC of Formula: 2960-93-2.

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

Tabor, Daniel P. published the artcileDesign rules for high mobility xanthene-based hole transport materials, Recommanded Product: Spiro[fluorene-9,9′-xanthene], the publication is Chemical Science (2019), 10(36), 8360-8366, database is CAplus and MEDLINE.

Tunable and highly conductive hole transport materials are crucial for the performance of organic electronics applications such as organic light emitting diodes and perovskite solar cells. For com. applications, these materials’ requirements include easy synthesis, high hole mobility, and highly tuned and compatible electronic energy levels. Here, we present a systematic study of a recently discovered, easy-to-synthesize class of spiro[fluorene-9,9′-xanthene]-based organic hole transport materials. Systematic side group functionalization allows us to control the HOMO energy and charge carrier mobility. Anal. of the bulk simulations enables us to derive design rules for mobility enhancement. We show that larger functional groups (e.g. methyl) decrease the conformational disorder due to steric effects and thus increase the hole mobility. Highly asym. or polar side groups (e.g. fluorine), however, increase the electrostatic disorder and thus reduce the hole mobility. These generally applicable design rules will help in the future to further optimize organic hole transport materials.

Chemical 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 C5H6N2O2, Recommanded Product: Spiro[fluorene-9,9′-xanthene].

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