Tag: M.W=200-250

Huang, Yongkang published the artcileFirst total syntheses of 1-benzoyl-3,4-dihydroisoquinoline alkaloids Nelumstemine and Longifolonine based on the photo-oxidation, Name: 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, the publication is Youji Huaxue (2020), 40(5), 1281-1289, database is CAplus.

A novel synthetic route for the total syntheses of 1-benzoyl-3,4-dihydroisoquinoline alkaloids was developed. Nelumstemine was synthesized for the first time via 6 steps in 50% overall yield starting from 3,4-dimethoxybenzaldehyde, and Longifolonine was also synthesized for the first time via 9 steps in 35% overall yield starting from vanillin. The key step of these total syntheses is photo-oxidation of 1-benzyl-3,4-dihydroisoquinolines to 1-benzoyl-3,4-dihydroisoquinolines by air under visible-light irradiation at room temperature The unique mild photo-oxidation of 1-benzyl-3,4-dihydro-isoquinolines has been studied in detail.

Youji Huaxue published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C10H11NO4, Name: 1,2-Dimethoxy-4-(2-nitrovinyl)benzene.

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

Su, Xiang published the artcileA sustainable [P_6,6,6,14]₂[OPBOA]-based separation process of rare earth and transition metal in waste NiMH battery, Application of 2,2-(1,2-Phenylenebis(oxy))diacetic acid, the publication is Minerals Engineering (2021), 106641, database is CAplus.

The separation of rare earth (RE) and transition metals is a critical step in the recycling of nickel-metal hydride (NiMH) battery. From the point of environmental and practical issues, an ionic liquid (IL) [trihexyl(tetradecyl)phosphonium]₂[2,2¡ä-(1,2-phenylenebis(oxy))dioctanoate] ([P_6,6,6,14]₂[OPBOA]) was newly synthesized for the separation of RE from transition metals in NiMH batteries leachate. The separation factors of ¦ÂNd/Co and ¦ÂNd/Ni could arrive at 5.2 x 10³ and 5.4 x 10³, resp. Meanwhile, the extracted Ni(II) and Co(II) could be effectively scrubbed and stripped by 0.5 mol/L sodium chloride (NaCl) solution without loss of RE. The loaded Nd(III) in [P_6,6,6,14]₂[OPBOA] could be quant. stripped by 0.014 mol/L hydrochloric acid (HCl), 0.016 mol/L sodium oxalate (Na₂C₂O₄) or 0.022 mol/L sodium carbonate (Na₂CO₃). [P_6,6,6,14]₂[OPBOA] could be recycled without regeneration when Na₂C₂O₄ and Na₂CO₃ were used as stripping agents and larger precipitated particle size could be obtained by low-concentration Na₂CO₃ solution In the process of separating rare earth and transition metal from NiMH battery, even to handle 500 mL feed solution, the recovery efficiency and purity of RE in NiMH batteries could still reach more than 96.4% and 99.8 wt% by using NaCl and Na₂CO₃ for stripping, resp. As characterized by XRD, the recovered RE oxides could be easily obtained by calcinations.

Minerals Engineering published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C5H6BNO3, Application of 2,2-(1,2-Phenylenebis(oxy))diacetic acid.

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

Han, Bo published the artcileOrganocatalytic Morita-Baylis-Hillman/Michael/Acetalization Cascade: Procedure-Controlled Diastereodivergence in the Asymmetric Synthesis of Fully Substituted Tetrahydropyrans, Related Products of catalysis-chemistry, the publication is Advanced Synthesis & Catalysis (2014), 356(17), 3676-3682, database is CAplus.

The authors accomplished a controlled diastereodivergence in the asym. synthesis of fully functionalized tetrahydropyrans I (R¹ = C₆H₅, 2-ClC₆H₄, 2,4-Cl₂C₆H₃, 2-thienyl, etc., R² = OC₂H₅, CH₃, R³ = CH₃, C₂H₅, n-Pr) by adjusting the sequence of an organocatalytic cascade reaction. The one-pot operation provides two synthetically important architectures with excellent stereocontrol. This is the first published kinetic resolution of MBH alcs. in an organocascade.

Advanced Synthesis & Catalysis published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C10H11NO4, Related Products of catalysis-chemistry.

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

Du, Guang-Fen published the artcileN-heterocyclic carbene-catalyzed pentafluorophenylation of aldehydes, Name: Trimethyl(perfluorophenyl)silane, the publication is RSC Advances (2015), 5(45), 35513-35517, database is CAplus.

The use of N-heterocyclic carbenes as highly efficient organocatalysts to catalyze multifluorophenylation of aldehydes with pentafluorophenyltrimethylsilane or bis(trimethylsilyl)tetrafluorobenzene to afford the corresponding fluorinated adducts in 49-99% yields was reported.

RSC Advances published new progress about 1206-46-8. 1206-46-8 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Trimethyl(perfluorophenyl)silane, and the molecular formula is C9H9F5Si, Name: Trimethyl(perfluorophenyl)silane.

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

Xu, Liang published the artcileA novel method for selective recovery of indium from end-of-life liquid crystal displays by 15-crown-5 ether and its derivatives, Formula: C10H10O6, the publication is Hydrometallurgy (2021), 105601, database is CAplus.

The present study has proposed a promising liquid-liquid extraction system using novel extractants of 15-crown-5 (15C5), benzo-15-crown-5 (B15C5), and thia-benzo-15-crown-5 (TB15C5) for selective indium recovery from end-of-life liquid crystal displays (LCDs) leaching solution The focus was placed on the selectivity of the crown ethers toward In³⁺ over the most competing ion of Sn²⁺. The mol. design of the crown ethers and their complexations with In³⁺ were theor. evaluated through d. functional theory (DFT) modeling from the perspectives of geometrical structure, electrostatic potential, independent gradient model, MO and thermodn. anal. The results show that the complexation affinity of the crown ethers toward In³⁺ is in the order of 15C5 > B15C5 > TB15C5. On the basis of the theor. anal., the target crown ethers of 15C5, B15C5, and TB15C5 were synthesized and the corresponding solvent extraction experiments were carried out. The exptl. results are in excellent agreement with the theor. evaluations that 15C5 has the best selectivity to In³⁺ over Sn²⁺ among the three crown ethers with the separation coefficient being 5.5, which is followed by 4.1 for B15C5 and 1.6 for TB15C5.

Hydrometallurgy published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C20H18BrN3, Formula: C10H10O6.

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

Li, Yueqing published the artcileSynthesis and anti-platelet aggregation assay of cinnamoyl-tyramine amide analogues, Application In Synthesis of 16909-09-4, the publication is Yingyong Huaxue (2018), 35(10), 1174-1183, database is CAplus.

In order to explore the influence of methoxy substitution in benzene ring, methylation of tyramine hydroxyl and cinnamoyl-tyramine amines, on anti-platelet aggregation activities analogs, cinnamoyl-tyramine amide analogs were synthesized via condensation and methylation with eight benzaldehyde derivatives as raw materials. The structures of synthesized compounds were characterized by NMR spectroscopy(NMR), mass spectrometry(MS) and single crystal diffraction. Based on variable-temperature NMR, rotational isomerization based on amide bond was studied for compounds 4a?4h. Their anti-platelet aggregation activities were tested in vitro and assayed by Born test. The results show that nine analogs are more active than podocarpamide. Specifically, compounds 2c, 4c and 4f show inhibition rates of 50.03%, 60.87% and 53.33%, resp., at 200 ¦Ìmol/L. The preliminary structure-activity relationship studies on these compounds indicate that 4-methoxy substituent is the most favorable for anti-ADP(adenosine-diphosphate) induced platelet aggregation, and methylated hydroxyl group on ring B and the amide nitrogen also increase the activities to some extent.

Yingyong Huaxue published new progress about 16909-09-4. 16909-09-4 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Benzene,Ether, name is (E)-3-(2,4-Dimethoxyphenyl)acrylic acid, and the molecular formula is C11H12O4, Application In Synthesis of 16909-09-4.

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

Jiang, Yong published the artcileSupramolecular networks constructed from mono- and bi-nuclear lanthanide complexes with 1,2-phenylenedioxydiacetic acid, Recommanded Product: 2,2-(1,2-Phenylenebis(oxy))diacetic acid, the publication is Journal of Coordination Chemistry (2010), 63(1), 36-45, database is CAplus.

[Tb₂(1,2-pdoa)₃¡¤6H₂O]¡¤H₂O (1) and [La(1,2-pdoa)(1,2-H₂pdoa)(OH)¡¤H₂O]¡¤5H₂O (2) (1,2-H₂pdoa = 1,2-phenylenedioxydiacetic acid) were synthesized and structurally characterized by single crystal x-ray diffraction. Complex 1 is a binuclear mol. in which one 1,2-pdoa ligand is a tetradentate bridge linking two Tb³⁺ ions, the other two 1,2-pdoa ligands bond Tb1³⁺ and Tb1A³⁺ via tetradentate chelating coordination. Tb³⁺ is nine-coordinate by six oxygens of 1,2-pdoa and three waters. Complex 2 is mononuclear with La³⁺ ten-coordinate by eight oxygens of two 1,2-pdoa, one hydroxide and one water. 1,2-Pdoa is tetradentate chelating with La³⁺ ion. The packing diagrams of 1 and 2 show supramol. networks via H-bonds. The fluorescence spectrum of 1 shows characteristic emission of Tb³⁺ with ⁵D₄ ¡ú ⁷F_j (j = 6-3) transitions.

Journal of Coordination Chemistry published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Recommanded Product: 2,2-(1,2-Phenylenebis(oxy))diacetic acid.

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

Li, Xia published the artcileNovel 1-D double chain lanthanide complexes: Synthesis, structure and luminescence, Related Products of catalysis-chemistry, the publication is Inorganica Chimica Acta (2009), 362(8), 2837-2841, database is CAplus.

Treatment of Ln(NO₃)₃¡¤6H₂O with 1,2-phenylenedioxydiacetic acid (H₂PDOA) in ethanol leads to the unusual 1-dimensional double chain complexes {[Ln(PDOA)_1.5(H₂O)₃]¡¤H₂O}_n (Ln = Sm (1), Eu (2), Dy (3)), in which the Ln³⁺ ions are linked by pentadentate and bidentate PDOA ligands in two different directions. The chain looks like a ladder containing two -Ln-O-C-O-Ln- chains and PDOA spacers, which has never been observed in the lanthanide carboxylate complexes, and they exhibit different photoluminescence properties.

Inorganica Chimica Acta published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Related Products of catalysis-chemistry.

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

Tang, Kaluo published the artcileReactions of mononuclear copper complexes formed by insertion of CS₂ into Cu-S bonds with various solvents. III. Formation and crystal structure of [CuI(PPh₃)(Py)]₂ and [CH₂(C₅H₅N)₂]₂[Cu₂I₆], Synthetic Route of 22693-41-0, the publication is Beijing Daxue Xuebao, Ziran Kexueban (1995), 31(6), 695-702, database is CAplus.

Mononuclear Cu complexes with structures of (Ph₃P)₂Cu(S₂CSR), formed by insertion of CS₂ into Cu-S bonds, can react with a various solvents undergoing some nucleophilic reactions. [CuI(PPh₃)(Py)]₂ (I) and [CH₂(C₅H₅N)₂]₂[Cu₂I₆] (II) were obtained from the reaction of starting material (R = Bu^t, C₆H₂Pr₃ⁱ-2,4,6) with CH₂I₂-acetone mixed-solvent in the presence of pyridine and then self-assembly in the same solution Crystal data for I: space group C₂/c,a = 26.112(6), b 14.499(3), c 11.357(2) ?, ¦Â 95.12(2)¡ã, Dc = 1.650 g/cm¡Þ3, Z = 4, R = 0.0334 fro 2182 independent reflections. Crystal data for II: space group P2₁/n, a 11.389(4), b 11.698(5), c 13.227(7) ?, ¦Â 114.99(4)¡ã, Dc = 2.563 g/cm³, Z = 0.0627 for 1891 independent reflection.

Beijing Daxue Xuebao, Ziran Kexueban published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C5H6BNO2, Synthetic Route of 22693-41-0.

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

Deng, Jinfeng published the artcileIodine promoted reduction of aromatic carbonyl compounds with phosphonic acid to access hydrocarbons, Application of Bis(4-fluorophenyl)methane, the publication is Tetrahedron (2022), 132755, database is CAplus.

A novel method for selective reduction of aromatic carbonyl compounds by phosphorus acid under metal-free conditions was achieved to produce the corresponding reduced products in good to excellent yields. By using H₃PO₃/I₂ system, various aromatic ketones and aldehydes were reduced to the corresponding hydrocarbons. Diketone compounds were also be reduced to the corresponding Z-alkenes. The protocol is low-cost and easily scaled up, which provided a simple and practical approach to access corresponding hydrocarbons.

Tetrahedron published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C13H10F2, Application of Bis(4-fluorophenyl)methane.

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