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Use of group 13 aryloxides for the synthesis of green chemicals and oxide materials.
Autorzy
Rok wydania
2022
Czasopismo
Numer woluminu
51
Strony
4135-4152
DOI
10.1039/d1dt03777c
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
In this work, group 13 metal aryloxides [Al(MesalO)3] (1), [Me2Ga(MesalO)]2 (2), [AlLi3(MesalO)6] (3) and [Me2GaLi(MesalO)2(THF)] (4) were obtained by the reaction of methyl salicylate (MesalOH) with group-13 alkyls MMe3 (for M = Al, Ga) or their combination with BuLi in a THF/alcohol solution. The direct reaction of MMe3 (for M = Al, Ga) and MesalOH (1 : 3) led to compound 1 or 2, respectively. When the same reactions were carried out with additional BuLi, the heterometallic compound 3 or the mixture of 4 and [Li6(MesalO)6] (5) was obtained. Compounds 1–5 were used for the chemical conversion of glycerol to α-hydroxy acid glyceryl esters by alcoholysis of L-lactide (L-LA), glycolide (GA), and ε-caprolactone (ε-CL). Compounds 1–5 were also efficient initiators for the ring-opening polymerization (ROP) of L-LA, GA, and ε-CL using glycerol as a branching agent to synthesize 3-arm polyesters. Heterometallic compounds 3 and 4 were attractive molecular precursors for the preparation of group 13-lithium ceramics, i.e. γ-LiAlO2 and β-LiGaO2.
Adres publiczny
http://dx.doi.org/10.1039/d1dt03777c
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