Novel aluminium compounds derived from Schiff bases: Synthesis, characterization and catalytic performance in hydroboration

Da Jin, Xiaoli Ma*, Yashuai Liu, Jiong Peng, Zhi Yang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

19 引用 (Scopus)

摘要

Seven novel aluminium complexes supported by Schiff base ligands derived from o-diaminobenzene or o-aminothiophenol were synthesized and characterized. The reactions of AlMe 3 with L 1 (N,N′-bis(benzylidine)-o-phenylenediamine) and L 2 (N,N′-bis(2-thienylmethylene)-o-phenylenediamine) gave the complexes L 1 AlMe 3 (1) and L 2 AlMe 2 (2), respectively, which involved two types of reaction mechanisms: one was proton transfer and ring closure, and the other was alkyl transfer. Complexes L 3 AlMe 2 (HL 3  = 4-chlorobenzylidene-o-aminothiophenol) (3), L 4 AlMe 2 (HL 4  = 2-thiophenecarboxaldehyde-o-aminothiophenol) (4), L 3 AlH(NMe 3 ) (5), L 4 AlH(NMe 3 ) (6) and L 5 AlH(NMe 3 ) (HL 5  = 4-methylbenzylidene-o-aminothiophenol) (7) were prepared by reacting HL 3–5 with equimolar AlMe 3 or H 3 Al⋅NMe 3 , respectively. Compounds 3–7 feature an organic–inorganic hybrid containing CNAlSC five-membered ring. All complexes were characterized using 1 H NMR and 13 C NMR spectroscopy, X-ray crystal structure analysis and elemental analysis. The efficient catalytic performances of 1–7 for the hydroboration of carbonyl groups were investigated, with compound 4 exhibiting the highest catalytic activity among all the complexes.

源语言英语
文章编号e4637
期刊Applied Organometallic Chemistry
33
3
DOI
出版状态已出版 - 3月 2019

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