Month: December 2022

Wu, Ting-Feng published the artcileZirconium-redox-shuttled cross-electrophile coupling of aromatic and heteroaromatic halides, Computed Properties of 2960-93-2, the publication is Chem (2021), 7(7), 1963-1974, database is CAplus and MEDLINE.

Herein, a homogeneous XEC method, which relied on a zirconaaziridine complex as a shuttle for dual palladium-catalyzed processes was reported. The zirconaaziridine-mediated palladium (ZAPd)-catalyzed reaction showed excellent compatibility with various functional groups and diverse heteroaromatic scaffolds. In accord with d. functional theory (DFT) calculations, a redox transmetallation between the oxidative addition product and the zirconaaziridine was proposed as the crucial elementary step. Thus, cross-coupling selectivity using a single transition metal catalyst was controlled by the relative rate of oxidative addition of Pd(0) into the aromatic halide. Overall, the concept of a combined reducing and transmetallating agent offered opportunities for the development of transition metal reductive coupling catalysis.

Chem 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 C24H29N5O3, Computed Properties of 2960-93-2.

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

Wu, Guohua published the artcileHole-Transport Materials Containing Triphenylamine Donors with a Spiro[fluorene-9,9′-xanthene] Core for Efficient and Stable Large Area Perovskite Solar Cells, SDS of cas: 159-62-6, the publication is Solar RRL (2017), 1(9), 1-9, database is CAplus.

Three low-cost triphenylamine-based hole-transport materials (HTMs) with spiro[fluorene-9,9-xanthene] (SFX) skeleton are synthesized through a facile three-step procedure. The effect of the chem. structure of the HTMs on the optical property, energy levels, H₂O/HTM interface, as well as the perovskite solar cell performance are studied. With the increasing bulkiness of attached groups on the SFX skeleton, the charge recombination resistance at the TiO₂/perovskite/HTMs interfaces is gradually increased, leading to increased open-circuit voltages. The device based on the bulkiest HTM (named BTPA-6) exhibits a better solar cell performance (11.57%, area: 1.02 cm²) than those with BTPA-4 and BTPA-5 in the forward scan. BTPA-6 also exhibits a power conversion efficiency of 14.4% (area: 0.375 cm²) which nearly matches spiro-OMeTAD (15.0%) in the reverse scan. Furthermore, all the three cost-effective (∼1/3 of that of spiro-OMeTAD) HTMs exhibit better long-term stabilities than spiro-OMeTAD.

Solar RRL 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 C6H16OSi, SDS of cas: 159-62-6.

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

Ou-Yang, Jiang-Kun published the artcileUnexpected Self-Assembly of Chiral Triangles from 90° Chiral Di-Pt(II) Acceptors, Formula: C22H18O2, the publication is Organic Letters (2014), 16(3), 664-667, database is CAplus and MEDLINE.

Two unexpected chiral organometallic triangles rather than squares from newly designed 90° chiral di-Pt-(II) acceptors were obtained through coordination-driven self-assembly. Their structures were well characterized by multinuclear NMR (¹H and ³¹P) and variable-temperature NMR experiments, ESI-TOF-MS, and elemental anal. The PM6 semiempirical mol. simulation was employed for the interpretation of the formation and stability of such chiral triangles.

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 C22H18O2, Formula: C22H18O2.

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

Han, Pei published the artcileThienoisoindigo-based polymers bearing diethynylbenzene and diethynylanthracene units for thin film transistors and solar cells, Formula: C18H10, the publication is Journal of Nanoscience and Nanotechnology (2018), 18(8), 5534-5541, database is CAplus and MEDLINE.

Two thienoisoindigo-based donor-acceptor conjugated polymers were synthesized via Sonogashira coupling reaction with 1,4-diethynylbenzene (P(TII-BEN)) and 9,10-diethynylanthracene (P(TII-ANT)) as donor units, resp. The optical and electrochem. properties of the polymers were also investigated. The highest hole mobility were 4.38 × 10^-3 cm² V^-1 s^-1 for P(TII-BEN) and 9.40 × 10^-3 cm² V^-1 s^-1 for P(TII-ANT) in bottom-gated/top-contact field-effect transistors. The bulk heterojunction organic solar cells consisting of the polymers and PC71BM yielded power conversion efficiencies of 1.59% for P(TII-BEN) and 1.90% for P(TII-ANT). Moreover, the microstructures were investigated by X-ray diffraction and at. force microscopy.

Journal of Nanoscience and Nanotechnology published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C18H10, Formula: C18H10.

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

Wu, Zhufeng published the artcileEstablishment of pharmacophore and VolSurf models to predict the substrates of UDP-glucuronosyltransferase1A3, Formula: C20H17FO4S, the publication is Xenobiotica (2015), 45(8), 653-662, database is CAplus and MEDLINE.

1. UDP-glucuronosyltransferase1A3 (UGT1A3) catalyzes glucuronidation of numerous xenobiotics/drugs. Here, we aimed to establish substrate selectivity models for UGT1A3 using the pharmacophore and VolSurf approaches. 2. Fifty structurally diverse substrates of UGT1A3 were collated from the literature. These substrates were divided into training (n = 34) and test sets (n = 16). The pharmacophore model was developed using the Discovery Studio 2.5 software. A user-defined feature (i.e. the glucuronidation site) was included in the program for model generation. The VolSurf model was derived using the VolSurf program implemented in SYBYL 8.0 software. 3. The pharmacophore model consisted of three features (i.e. one glucuronidation site and two hydrogen-bond acceptors). The activities of 81% of test set substrates were adequately predicted (deviated by less than one-log unit) by the model, suggestive of a satisfactory predictive power. The refined VolSurf model based on 22 mol. descriptors was statistically significant (r² = 0.793, q² = 0.606). It also processed a good predictability as the activities of 14 test set compounds were well predicted. The VolSurf model highlighted the chem. features (including large mol. size, hydrophilic regions and hydrogen-bonding groups) contributing to favored glucuronidation by UGT1A3. 4. In conclusion, two predictive 3D-QSAR models (i.e. the pharmacophore and VolSurf models) for UGT1A3 were successfully established. These models contributed to an improved understanding of the substrate preference of UGT1A3 and a more comprehensive prediction of UGT-mediated metabolism

Xenobiotica published new progress about 59973-80-7. 59973-80-7 belongs to naphthyridine, auxiliary class Immunology/Inflammation,COX, name is Sulindac sulfone, and the molecular formula is C38H24F4O4P2, Formula: C20H17FO4S.

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

Ren, Baoyi published the artcileSynthesis and characterization of bromo and acetyl derivatives of spiro [fluorene-9, 9′-xanthene], Related Products of naphthyridine, the publication is Huaxue Tongbao (2013), 76(6), 512-516, database is CAplus.

Bromination and acetylation of spiro [fluorene-9, 9′-xanthene] (SFX) as substrate have been described. As a result, six SFX-based derivatives I(R¹ = Br, CH₃CO, R² = R³ = H; R¹ = R² = Br, CH₃CO; R¹ = R² = R³ = Br, CH₃CO) have been obtained under the condition of either bromo source from potassium bromate, potassium bromide with sulfuric acid at 0°C or acetylchloride as acylation reagent at room temperature The attacked positions of substituted SFX have been confirmed by the characterization of NMR, in which the bromination reaction in turn occur at the position of 2′, 7′ and 2 while the acetylation reaction in turn at the position of 2′, 2 and 7′. These results offer the basic platform to design the new-concept SFX-based organic semiconductors.

Huaxue Tongbao 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

Shi, Bing Bing published the artcileHighly selective fluorescent sensing for CN^– in water: utilization of the supramolecular self-assembly, Application In Synthesis of 116-63-2, the publication is Chemical Communications (Cambridge, United Kingdom) (2013), 49(71), 7812-7814, database is CAplus and MEDLINE.

A simple 4-amino-3-hydroxynaphthalene-1-sulfonic acid is demonstrated to fluorescently sense CN^– in water based on the mechanism of supramol. self-assembly. This work provides a novel approach for the selective recognition of CN^–. The detection limit of the sensor towards CN^– is 3.2 × 10^-7 M, and other anions, including F^–, Cl^–, Br^–, I^–, AcO^–, H₂PO₄^–, HSO₄^–, and ClO₄^–, had nearly no influence on the probing behavior. Notably, the test strips based on S₄ were fabricated, which could act as convenient and efficient CN^– test kits.

Chemical Communications (Cambridge, United Kingdom) published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C14H10O4S2, Application In Synthesis of 116-63-2.

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

Huang, Junmin published the artcilePreparation and evaluation of proline-based chiral columns, Category: naphthyridine, the publication is Analytical Chemistry (2005), 77(10), 3301-3308, database is CAplus and MEDLINE.

Chiral stationary phases made of readily available proline peptides were prepared and evaluated for general chiral separation With the proper structural elements, these columns demonstrated broad chiral selectivity. Among the 53 analytes tested, a tetraproline column resolved 31. The separations achieved for these analytes are comparable to those achieved on Whelk O2 column, while still inferior to those achieved on Daicel AD-H and OD-H columns. Number of proline units proves important for chiral recognition, because a control column made with a single proline unit is largely ineffective.

Analytical 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, Category: naphthyridine.

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

Zheng, Xuehua published the artcileThe molecular basis for inhibition of sulindac and its metabolites towards human aldose reductase, Safety of Sulindac sulfone, the publication is FEBS Letters (2012), 586(1), 55-59, database is CAplus and MEDLINE.

Sulindac (SLD) exhibits both the highest inhibitory activity towards human aldose reductase (AR) among popular non-steroidal anti-inflammatory drugs and clear beneficial clin. effects on Type 2 diabetes. However, the mol. basis for these properties is unclear. Here, we report that SLD and its pharmacol. active/inactive metabolites, SLD sulfide and SLD sulfone, are equally effective as un-competitive inhibitors of AR in vitro. Crystallog. anal. reveals that π-π stacking favored by the distinct scaffold of SLDs is pivotal to their high AR inhibitory activities. These results also suggest that SLD sulfone could be a potent lead compound for AR inhibition in vivo.

FEBS Letters published new progress about 59973-80-7. 59973-80-7 belongs to naphthyridine, auxiliary class Immunology/Inflammation,COX, name is Sulindac sulfone, and the molecular formula is C13H24INO4, Safety of Sulindac sulfone.

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

Xu, Bo published the artcileTailor-Making Low-Cost Spiro[fluorene-9,9′-xanthene]-Based 3D Oligomers for Perovskite Solar Cells, SDS of cas: 159-62-6, the publication is Chem (2017), 2(5), 676-687, database is CAplus.

The power-conversion efficiencies (PCEs) of perovskite solar cells (PSCs) have increased rapidly from about 4% to 22% during the past few years. One of the major challenges for further improvement of the efficiency of PSCs is the lack of sufficiently good hole transport materials (HTMs) to efficiently scavenge the photogenerated holes and aid the transport of the holes to the counter-electrode in the PSCs. In this study, we tailor-made two low-cost spiro[fluorene-9,9′-xanthene] (SFX)-based 3D oligomers, termed X54 and X55, by using a one-pot synthesis approach for PSCs. One of the HTMs, X55, gives a much deeper HOMO level and a higher hole mobility and conductivity than the state-of-the-art HTM, Spiro-OMeTAD. PSC devices based on X55 as the HTM show a very impressive PCE of 20.8% under 100 mW·cm^-2 AM1.5G solar illumination, which is much higher than the PCE of the reference devices based on Spiro-OMeTAD (18.8%) and X54 (13.6%) under the same conditions.

Chem 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 C14H12N2S, SDS of cas: 159-62-6.

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