Synthesis and characterization of neutral and cationic aluminum complexes supported by a furfuryl-containing aminophenolate ligand for ring-opening polymerization of ε-caprolactone
作者： Jiraya Kiriratnikom , Sucheewin Chotchatchawankul , Setsiri Haesuwannakij , Supavadee Kiatisevi , Khamphee Phomphrai
DOI: 10.1039/C8NJ00937F
关键词:
摘要: The synthesis, structural characterization and reactivity of aluminum complexes supported by a novel tetradentate aminophenolate ligand containing furfuryl groups (LH), LAlMe2 (1), LAlMeCl (2) LAlMeOtBu (3), are described. molecular structures LH 1–3 determined X-ray analysis. Complexes contain four-coordinated mononuclear center. Activation complex 1 with either B(C6F5)3 or [Ph3C][B(C6F5)4] afforded the corresponding cationic complex, [LAlMe][MeB(C6F5)3] [LAlMe][B(C6F5)4], respectively. All were stable at room temperature in absence an external Lewis base over week. decomposed upon heating 70 °C, giving neutral LAlMe(C6F5) complex. inactive for ring-opening polymerization (ROP) e-caprolactone (CL) temperature. However, only presence benzyl alcohol was found to be active ROP CL well-behaved manner, first-order reaction respect [CL].
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