Aluminum and titanium complexes bearing 2,6-Bis(2-hydroxyphenyl)pyridines for ring-opening polymerization of lactide, ε-caprolactone and their copolymerization: Effect of a ligand on coordination chemistry and reactivity

Mankaev, Badma N.; Serova, Valeriia A.; Agaeva, Milana U.; Lyssenko, Konstantin A.; Fakhrutdinov, Artem N.; Churakov, Andrei V.; Chernikova, Elena V.; Egorov, Mikhail P.; Karlov, Sergey S.

doi:10.1016/j.jorganchem.2023.122973

Cited by 5 publications

(2 citation statements)

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“…26). 88 The Al atom in 125 has a four-coordination number due to the tridentate ligand and the methyl group in a distorted-tetrahedral geometry. It has been shown that compound 125 shows high reactivity as a catalyst in the copolymerization of l -LA and ε-CL.…”

Section: Conventional Metal-based Catalysts For Rocopmentioning

confidence: 99%

“…50 Additionally, several multimetallic catalysts have recently been developed for the synthesis of copolymers. 51,52 PLA has also been blended with other eco-friendly materials (organic or inorganic minerals) and reviewed elsewhere. 53 This review will also highlight the ligand and metal framework critical for accelerating the ROCOP reactions of cyclic esters.…”

Section: Introductionmentioning

confidence: 99%

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Crafting sustainable solutions: architecting biodegradable copolymers through controlled ring-opening copolymerization

Sagar,

Nath,

Ray

et al. 2024

Dalton Trans.

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Section: Conventional Metal-based Catalysts For Rocopmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crafting sustainable solutions: architecting biodegradable copolymers through controlled ring-opening copolymerization

Sagar,

Nath,

Ray

et al. 2024

Dalton Trans.

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Synthesis of Aluminum Complexes Based on 2,6‐Bis(2‐hydroxyphenyl)Pyridines: Efficient Initiators for Ring‐Opening Polymerization of Cyclic Esters

Serova,

Lykov,

Mankaev

et al. 2024

ChemistrySelect

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The search for new initiators based on nontoxic metal complexes, allowing for the controlled production of polycaprolactone (PCL) and polylactide (PLA) is an actual task. In the present work, we report the synthesis of aluminum complexes 6a and 6b based on substituted 2,6‐bis(2‐hydroxyphenyl)pyridine pro‐ligands. The compositions and structures of the novel compounds were established by elemental analysis and 1H, 13C, NMR spectroscopy in the solid state by X‐ray diffraction analysis (6a and 6b). All the synthesized aluminum complexes are monomeric. Complexes 6a and 6b (in presence of benzyl alcohol (BnOH)) turned out to be active in the ring opening polymerization (ROP) of ε‐caprolactone (ε‐CL), L‐, rac‐lactide (L‐, rac‐LA) gave PCL and PLA with high molecular weights. The mechanism of the polymerization reaction for compounds С, 6a, and 6b was also investigated using the density functional theory (DFT) method. The substituent effect analyzed in terms of percent buried volume and non‐covalent interactions. The values of calculated Gibbs free activation energies correspond to the trend found experimentally.

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Organic Chemistry in Russian Universities. Achievements of Recent Years

Stoikov,

Antipin,

Burilov

et al. 2024

Russ J Org Chem

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Aluminum and titanium complexes bearing 2,6-Bis(2-hydroxyphenyl)pyridines for ring-opening polymerization of lactide, ε-caprolactone and their copolymerization: Effect of a ligand on coordination chemistry and reactivity

Cited by 5 publications

References 44 publications

Crafting sustainable solutions: architecting biodegradable copolymers through controlled ring-opening copolymerization

Crafting sustainable solutions: architecting biodegradable copolymers through controlled ring-opening copolymerization

Synthesis of Aluminum Complexes Based on 2,6‐Bis(2‐hydroxyphenyl)Pyridines: Efficient Initiators for Ring‐Opening Polymerization of Cyclic Esters

Organic Chemistry in Russian Universities. Achievements of Recent Years

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