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Amidinate Aluminium Complexes as Catalysts for Carbon Dioxide Fixation into Cyclic Carbonates

2018; Wiley; Volume: 10; Issue: 10 Linguagem: Inglês

10.1002/cctc.201702014

1867-3899

Danay Osorio Meléndez, Agustín Lara‐Sánchez, Javier Martı́nez, Xiao Wu, Antonío Otero, José A. Castro‐Osma, Michael North, René S. Rojas,

biodegradable polymer synthesis and properties

Abstract A series of inexpensive and sustainable amidinate aluminium complexes has been developed as catalysts for the chemical fixation of carbon dioxide into cyclic carbonates. The reactions using terminal epoxides as substrates were carried out at room temperature and one bar of carbon dioxide pressure in the presence of tetrabutylammonium iodide as cocatalyst in the absence of solvent. Under these reaction conditions, excellent conversions and selectivities were achieved for a broad range of terminal epoxides. Moreover, the optimal catalyst could be used for the synthesis of disubstituted cyclic carbonates from internal epoxides and carbon dioxide, highlighting the potential of these amidinate aluminium complexes as catalysts.