Day: November 21, 2022

Sreedhar, B. published the artcileCuFe₂O₄ nanoparticles: a magnetically recoverable and reusable catalyst for the synthesis of 5-substituted 1H-tetrazoles, Recommanded Product: 5-(4-(Trifluoromethyl)phenyl)-1H-tetrazole, the publication is Tetrahedron Letters (2011), 52(28), 3565-3569, database is CAplus.

An efficient and economical protocol for the synthesis of 5-substituted 1H-tetrazoles from various nitriles and sodium azide is described using magnetically recoverable and reusable CuFe₂O₄ nanoparticles. A wide variety of aryl nitriles underwent [2+3] cycloaddition under mild reaction conditions to afford tetrazoles in good to excellent yields. The catalyst was magnetically separated and reused five times without significant loss of catalytic activity.

Tetrahedron Letters published new progress about 2251-79-8. 2251-79-8 belongs to isoxazole, auxiliary class Trifluoromethyl,Fluoride,Benzene, name is 5-(4-(Trifluoromethyl)phenyl)-1H-tetrazole, and the molecular formula is C12H9N3O4, Recommanded Product: 5-(4-(Trifluoromethyl)phenyl)-1H-tetrazole.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Wang, Bo published the artcileMechanisms and progress of parecoxib sodium, Product Details of C19H17N2NaO4S, the publication is Hainan Yixue (2014), 25(23), 3496-3499, database is CAplus.

A review. Parecoxib sodium, a novel COX-2 specific inhibitor, is now widely used in clin. prevention and treatment of moderate to severe pain. Recent studies have suggested that parecoxib sodium exerts not only an analgesic effect but also some non-analgesic effects. Parecoxib sodium reduces cerebral ischemic neuronal damage, protects or deteriorates ischemic organs, produces anti-tumor effects, as well as against angiogenesis effect. The study on the non-analgesic effects of parecoxib sodium provides theor. basis for expanding its clin. applications. In this paper, we reviewed the progress in the functional roles of parecoxib sodium and its underlying mechanisms.

Hainan Yixue published new progress about 198470-85-8. 198470-85-8 belongs to isoxazole, auxiliary class Immunology/Inflammation,COX, name is Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, and the molecular formula is C24H29N5O3, Product Details of C19H17N2NaO4S.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Sharma, Swagat published the artcileDiscovery, synthesis and characterization of a series of (1-alkyl-3-methyl-1H-pyrazol-5-yl)-2-(5-aryl-2H-tetrazol-2-yl)acetamides as novel GIRK1/2 potassium channel activators, SDS of cas: 2251-79-8, the publication is Bioorganic & Medicinal Chemistry Letters (2019), 29(6), 791-796, database is CAplus and MEDLINE.

The study described the discovery and characterization of a series of 5-aryl-2H-tetrazol-3-yl acetamides as G protein-gated inwardly-rectifying potassium (GIRK) channels activators. Working from an initial hit discovered during a high-throughput screening campaign, a tetrazole scaffold was identified that shifts away from the previously reported urea-based scaffolds while remaining effective GIRK1/2 channel activators. In addition, the compounds were evaluated in Tier 1 DMPK assays and identified a (3-methyl-1H-pyrazol-1-yl)tetrahydrothiophene-1,1-dioxide head group that imparts interesting and unexpected microsomal stability compared to previously-reported pyrazole head groups.

Bioorganic & Medicinal Chemistry Letters published new progress about 2251-79-8. 2251-79-8 belongs to isoxazole, auxiliary class Trifluoromethyl,Fluoride,Benzene, name is 5-(4-(Trifluoromethyl)phenyl)-1H-tetrazole, and the molecular formula is C13H10O3, SDS of cas: 2251-79-8.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Sakharov, Pavel A. published the artcileNon-natural 2H-azirine-2-carboxylic acids: an expedient synthesis and antimicrobial activity, Synthetic Route of 1076-59-1, the publication is RSC Advances (2019), 9(65), 37901-37905, database is CAplus and MEDLINE.

Non-natural 2H-azirine-2-carboxylic acids I (R¹ = CH₃, C₆H₅, 2-furyl, etc.; R² = H, CH₃, C₆H₅, 4-BrC₆H₄, CH₂CCH) were obtained in high yields by FeCl₂-catalyzed isomerization of 5-chloroisoxazoles II to azirine-2-carbonyl chlorides followed by their hydrolysis. The 3-aryl- and 3-heteroaryl-substituted acids I are stable during prolonged storage, exhibit antibacterial activity against ESKAPE pathogens and show a low level of cytotoxicity.

RSC Advances published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is C9H7NO2, Synthetic Route of 1076-59-1.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Jung, Dai-Li published the artcileSynthesis of 9-arylcarbazoles from 1-arylpyrroles, Computed Properties of 57103-14-7, the publication is Journal of the Korean Chemical Society (1996), 40(11), 702-705, database is CAplus.

Cyclization of 2,5-dimethoxytetrahydrofuran with anilines gave 22-25% carbazoles I (R = 4-MeO, 4-Me, 4-NO₂, 4-F, 4-Cl, 4-Br, 3,5-Cl₂, 2,6-Cl₂, H, 3-NO₂, 3-Br).

Journal of the Korean Chemical Society published new progress about 57103-14-7. 57103-14-7 belongs to isoxazole, auxiliary class Fused Tricycles,Carbazoles, name is 9-(4-Fluorophenyl)-9H-carbazole, and the molecular formula is C18H12FN, Computed Properties of 57103-14-7.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Sylvianti, Nadhila published the artcileNew A-D-A type small molecules based on benzodithiophene derivative for organic solar cells, Application In Synthesis of 1076-59-1, the publication is Molecular Crystals and Liquid Crystals (2018), 660(1), 66-71, database is CAplus.

A synthesized of acceptor-donor-acceptor (A-D-A) type oligomer based on benzodithiophene (BDT) as a donor (D) unit and phenylisoxazol (OX) as an acceptor (A) is to investigate the effect of combination between the strong electron donor and a strong electron acceptor. In addition, we introduce hexylthiophene (HT) ring as a π-bridge to extend the effective conjugation length and increase the solubility Here we report the performance of 2,6-(4-(thiophen-2-yl)methylene)-3-phenylisoxazol-5(4H)-one-4,8-bis((2-ethylhexyl)oxy)benzo[1,2-b:4,5-b’]dithiophene employing as the electron donor in the inverted organic solar cells and PC₇₁BM as the electron acceptor unit. UV-Vis absorption and electrochem. measurements investigated the optoelectronic properties that revealing the HUMO/LUMO level at -3.72 eV/-5.44 eV with an optical band gap of 1.72 eV for BDT-HTOX. Maximum power conversion efficiency based on is showed up to 0.80% with a short-circuit c.d. (J_sc) of -3.26 mA/cm², V_oc of 0.88 V, and fill factor (FF) of 27.9% using chlorobenzene as a solvent for solution processed organic solar cells.

Molecular Crystals and Liquid Crystals published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is 0, Application In Synthesis of 1076-59-1.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Kim, So Han published the artcileA tuned bicyclic proazaphosphatrane for catalytically enhanced N-arylation reactions with aryl chlorides, HPLC of Formula: 57103-14-7, the publication is European Journal of Organic Chemistry (2015), 2015(9), 1954-1960, database is CAplus.

The N-arylation of various amines with aryl chlorides proceeded in good to excellent yields in the presence of proazaphosphatrane ligand P[N{(p-NMe₂)C₆H₄CH₂}CH₂CH₂]₃N and small amounts of Pd₂(dba)₃. This catalytic system was also very effective for the synthesis of carbazoles.

European Journal of Organic Chemistry published new progress about 57103-14-7. 57103-14-7 belongs to isoxazole, auxiliary class Fused Tricycles,Carbazoles, name is 9-(4-Fluorophenyl)-9H-carbazole, and the molecular formula is C18H12FN, HPLC of Formula: 57103-14-7.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Chalyk, Bohdan A. published the artcileRegioselective Synthesis of Functionalized 3- or 5-Fluoroalkyl Isoxazoles and Pyrazoles from Fluoroalkyl Ynones and Binucleophiles, Formula: C5H3F2NO3, the publication is Journal of Organic Chemistry (2019), 84(23), 15212-15225, database is CAplus and MEDLINE.

A facile synthetic route towards either 3- or 5-fluoroalkyl-substituted isoxazoles or pyrazoles containing an addnl. functionalization site was developed and applied on a multigram scale. The elaborated approach extends the scope of fluoroalkyl substituents for introduction into the heterocyclic moiety, and uses convenient transformations of the side chain for incorporation of fluoroalkyl substituted azoles into the structures of biol. active mols. The utility of the obtained building blocks for isosteric replacement of alkyl-substituted isoxazole and pyrazole was shown by the synthesis of fluorinated Isocarboxazid and Mepiprazole analogs.

Journal of Organic Chemistry published new progress about 1935503-24-4. 1935503-24-4 belongs to isoxazole, auxiliary class Difluoromethylated Building Blocks, name is 3-(Difluoromethyl)isoxazole-5-carboxylic acid, and the molecular formula is C5H3F2NO3, Formula: C5H3F2NO3.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Wannenmacher, Nick published the artcileCatalytic Asymmetric Chlorination of Isoxazolinones, HPLC of Formula: 1076-59-1, the publication is European Journal of Organic Chemistry (2022), 2022(9), e202200030, database is CAplus.

The first catalytic asym. chlorination of isoxazolinones I (R¹ = Me, Ph, 4-chlorophenyl, 4-methoxyphenyl; R ² = Me, Bn, naphthalen-2-yl, etc.), a synthetically and biol. interesting class of heterocycles II, which can be considered as precursors for β-aminoacids was reported. The title reaction was catalyzed with high enantioselectivity by a planar chiral ferrocene based palladacycle III in high to excellent yields. It is showcased that the products are valuable for post-synthetic transformations. An S_N2 reaction proceeded with smooth inversion of the absolute configuration. The substitution product II (R¹ = Ph, R² = Bn) could then be transformed into an α-azido β-aminoacid derivative IV via a reductive, diastereoselective ring opening.

European Journal of Organic Chemistry published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is C13H16BNO5, HPLC of Formula: 1076-59-1.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Tasaganva, R. G. published the artcileDevelopment of novel crosslinkable polymers for second-order nonlinear optical devices, Recommanded Product: 3-Phenylisoxazol-5(2H)-one, the publication is Synthetic Metals (2011), 161(17-18), 1787-1799, database is CAplus.

We have synthesized different nonlinear optical responsive chromophores with imidazolidine-2,4-dione, pyrimidine-2,4,6(1H,3H,5H)-trione and 3-phenyl-2-isoxazolin-5-one as acceptors. With these, a series of crosslinkable polymers were synthesized using phenylenediacryloyl chloride, tolylene-2,4-diisocyanate and 4,4′-methylenedi(Ph isocyanate). The mol. structural characterization of these polymers was achieved by FTIR, UV-vis, ¹H NMR and elemental anal. The inherent viscosities of these polymers (η inh) determined by Ubbelohde viscometer, were in the range of 0.26-0.29 dL/g. Thermal behavior of these polymers was studied using differential scanning calorimetry and thermogravimetric anal. The glass transition temperatures (T _g‘s) of the resulting polymers were in the range of 97-175 °C. The change in the mol. alignment in the polymer films after elec. poling was ascertained by at. force microscopy. The resulting polymers exhibited an excellent solubility in many of the common organic solvents, suggesting that these polymers offer good processability. The second harmonic generations (SHG) coefficients (d₃₃) of poled polymers determined by Maker fringe technique were in the range of 44-109.07 pm/V at 532 nm, signifying the acceptability for nonlinear optical devices.

Synthetic Metals published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is C19H14Cl2, Recommanded Product: 3-Phenylisoxazol-5(2H)-one.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem