Aluminum Salen Complexes Modified with Unsaturated Alcohol: Synthesis, Characterization, and Their Activity towards Ring-Opening Polymerization of ε-Caprolactone and D,L-Lactide

A highly efficient one-step approach to the macromonomer synthesis using modified aluminum complexes as catalysts of ring-opening polymerization (ROP) of ε-caprolactone and D,L-lactide was developed. The syntheses, structures, and catalytic activities of a wide range of aluminum salen complexes, 3a-...

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Detalles Bibliográficos
Autores principales: Zaitsev, Kirill V., Trubachev, Andrey D., Oprunenko, Yuri F., Piskun, Yuliya A., Vasilenko, Irina V., Churakov, Andrei V., Kostjuk, Sergei V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9920203/
https://www.ncbi.nlm.nih.gov/pubmed/36770928
http://dx.doi.org/10.3390/molecules28031262
Descripción
Sumario:A highly efficient one-step approach to the macromonomer synthesis using modified aluminum complexes as catalysts of ring-opening polymerization (ROP) of ε-caprolactone and D,L-lactide was developed. The syntheses, structures, and catalytic activities of a wide range of aluminum salen complexes, 3a-c, functionalized with unsaturated alcohol (HO(CH(2))(4)OCH=CH(2)) are reported. X-Ray diffraction studies revealed a tetragonal pyramidal structure for 3c. Among the complexes 3a-c, the highest activity in bulk ROP of ε-caprolactone and D,L-lactide was displayed by 3b, affording polyesters with controlled molecular weights at low monomer to initiator ratios (M(n) up to 15,000 g mol(−1)), relatively high polydispersities (Ð~1.8) and high number-average functionalities (F(n) up to 85%).

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