Dariusz Basiak, T. Wojciechowski, A. Plichta
Oct 15, 2017
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Influential Citations
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Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Reactions of the chiral alcohol rac 6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-7-ol [(R,S)-LH] with R3Al (R = tBu, Et) have been studied. An influence of reaction conditions on the product structures and distributions was found. The dimeric products (Al2R4L2) [R = tBu (1), R = Et (2)] were formed in the reactions of R3Al with one equivalent of (R,S)-LH as mixtures of the heterochiral (R,S) and homochiral (R,R) and (S,S) diastereomers. The X-ray diffraction measurements of the (R,S)-1 and (R,S)-2 showed dinuclear complexes with bridging ON ligands and 10-membered C4N2O2Al2 central cycles. The molecules contain two chiral ligands demonstrating (R) and (S) configurations of CO carbon atoms. Polymerization tests showed that the complexes 1 and 2 have activity in the ROP of e-caprolactone. Kinetic studies revealed first order reaction of polymerization.