Efficient Epoxidation of Olefins by Silica Supported Dioxidomolybdenum(VI) Coordination Compounds

Catalysis Letters, Год журнала: 2023, Номер 154(1), С. 116 - 131

Опубликована: Фев. 20, 2023

Язык: Английский

---

Rhodium-catalysed homo-coupling of terminal alkynes: divergent synthesis of bioactive 1,3-diynes and conjugated enediynes

New Journal of Chemistry, Год журнала: 2024, Номер 48(16), С. 7517 - 7523

Опубликована: Янв. 1, 2024

C(sp)–C(sp) cross-coupling of terminal alkynes represents a robust tool for building biologically active 1,3-diynes although confronted with huge challenges regarding selectivity control.

Язык: Английский

---

Palladium anchored to BisPyP@bilayer-SiO2@NMP organic–inorganic hybrid as an efficient and recoverable novel nanocatalyst in suzuki and stille C–C coupling reactions

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Апрель 18, 2024

Abstract The palladium anchored to BisPyP@bilayer-SiO 2 @NMP organic–inorganic hybrid was employed as an effective and recyclable organometallic catalyst in Suzuki Stille C–C coupling reactions. structure of this magnetic nanocatalyst determined using various techniques such SEM, TEM, FT-IR, EDS, ICP-OES, VSM, N adsorption–desorption isotherms, XRD, TGA. In both the mentioned paths, yields products were very favorable ranged from 90 98%. Also, they had significant features compared previous reports, short reaction time (5–15 7–20 min respectively reactions), easy work-up, broad substrate scope, ease separation a magnet, suitable reproducibility 6 runs, heterogeneous nature not washing it during consecutive runs with confirmation hot filtration ICP-OES methods.

Язык: Английский

---

Synthesis of chiral Cu(II) complexes from pro-chiral Schiff base ligand and investigation of their catalytic activity in the asymmetric synthesis of 1,2,3-triazoles

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Май 8, 2024

Abstract A pro-chiral Schiff base ligand (HL) was synthesized by the reaction of 2-amino-2-ethyl-1,3-propanediol and pyridine-2-carbaldehyde in methanol. The HL with CuCl 2 ·2H O CuBr methanol gave neutral mononuclear Cu(II) complexes general formula [Cu(HL)Cl ] ( 1 ) [Cu(HL)Br ), respectively. By slow evaporation methanolic solutions , their enantiomers were isolated crystalline format. formation pure chiral crystals racemic mixture amply authenticated single crystal X-ray analysis, which indicated that S-[Cu(HL)Cl ], R-[Cu(HL)Cl S-[Cu(HL)Br are crystallized P2 space group orthorhombic system. Preferential crystallization used to isolate R S as compounds also studied CD analysis. Structural studies origin chirality these is related coordination mode employed because one its carbon atoms has been converted a center complexes. Subsequently, click synthesis β-hydroxy-1,2,3-triazole results catalytic can act enantioselective catalysts for asymmetric product under mild condition. This study illustrates significant capacity use ligands preparing based on be considered an effective approach cheap from achiral reagents.

Язык: Английский

---

Oxidation coupling of terminal alkynes over CuPd bimetallic alloy enhanced by optimized charge transfer and alloy structure

Chemical Engineering Journal, Год журнала: 2023, Номер 470, С. 144193 - 144193

Опубликована: Июнь 17, 2023

Язык: Английский

---

Structural consequences in differently substituted haloarylcarboxylates and non-covalent interactions on crystal packing and biological efficacy of copper(II) complexes with N,N,N′,N′-tetramethylethylenediamine N-donor ligand

Journal of Molecular Structure, Год журнала: 2023, Номер 1302, С. 137371 - 137371

Опубликована: Дек. 21, 2023

Язык: Английский

---

Synthesis, structure, and catalytic performance of solvent induced zinc clusters in furan synthesis by cycloisomerization reaction

Applied Organometallic Chemistry, Год журнала: 2024, Номер 38(3)

Опубликована: Янв. 13, 2024

Two Zn(II) clusters were synthesized by the reaction of Zn(OAc) 2 ·2H O and 1,2‐bis(2‐hydroxy‐3‐methoxybenzylidene)hydrazine as a N 4 ‐donor Schiff base ligand in 1:3 molar ratio. The methanol gave yellow‐brown needle crystals, while block yellow crystals achieved mixture methanol:water (50:50 v/v). Investigation single crystal X‐ray analysis showed that solvent has considerable effect on structure composition products. In methanol, two independent pentanuclear with same general formula [Zn 5 (L) (μ‐OAc) (OAc) (CH 3 OH) ] but different coordination environments around cores, bridging mode acetate ligands are present unit cell. methanol:water, cluster 1D polymer repetitive simultaneously structure. These compounds further characterized spectroscopic techniques, they used catalysts for intramolecular cycloisomerization 1,4‐diphenylbut‐3‐yn‐1‐one. results indicated these can efficiently produce 2,5‐diphenylfuran through catalytic reaction.

Язык: Английский

---

Chemical CO2 fixation by cyanido bridged heterometallic Zn(II)-Mn(II) 2D coordination polymer

Dalton Transactions, Год журнала: 2024, Номер 53(36), С. 15246 - 15257

Опубликована: Янв. 1, 2024

A new cyanido bridged Zn(II)-Mn(II) mixed-metal coordination polymer, {[Zn(μ-L)(μ-CN)

Язык: Английский

---

Integrating Sustainable Chemistry Principles in Polydiacetylene (PDA) Synthesis

Asian Journal of Organic Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 19, 2024

Abstract Polydiacetylenes (PDAs) represent one of the most intriguing classes semiconducting polymers, captivating researchers with their unique properties and diverse applications. They possess remarkable electronic optical characteristics, as well ability to undergo dramatic color changes in response various stimuli. This perspective explores integration sustainable chemistry principles into synthesis PDAs. We highlight how several elements such diacetylene green‐coupling synthesis, biodegradability, solid state biobased precursors, can contribute advancement more responsible innovative PDAs materials.

Язык: Английский

---

Suzuki-Miyaura cross-coupling reaction catalyzed by Pd(II) complexes of N,O-donor Schiff base ligands

Polyhedron, Год журнала: 2023, Номер 245, С. 116655 - 116655

Опубликована: Сен. 12, 2023

Язык: Английский

---