In:
Applied Organometallic Chemistry, Wiley, Vol. 33, No. 3 ( 2019-03)
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
0268-2605
,
1099-0739
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
1480791-9
