Undirected C-H Bond Activation in Aluminium Hydrido Enaminonates

被引：1

作者：

Amadi, Chijioke Kingsley ^{[1
]}

Atamtuerk, Ufuk ^{[1
]}

Lichtenberg, Andreas ^{[1
]}

Raauf, Aida ^{[1
]}

Mathur, Sanjay ^{[1
]}

机构：

[1] Univ Cologne, Inst Inorgan Chem, Dept Chem, Greinstr 6, D-50939 Cologne, Germany

来源：

MOLECULES | 2023年 / 28卷 / 05期

关键词：

hydride migration; C-H bond activation; aluminium; main group compounds; ATOMIC LAYER DEPOSITION; LEWIS-ACID; CATALYTIC FUNCTIONALIZATION; CYCLIC ESTERS; COMPLEXES; HYDROSILYLATION; HYDROSILATION; MULTINUCLEAR; PRECURSORS; REACTIVITY;

D O I：

10.3390/molecules28052137

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Two new aluminium hydrido complexes were synthesized by reacting AlH3 with the enaminone ligand N-(4,4,4-trifluorobut-1-en-3-on)-6,6,6-trifluoroethylamine (HTFB-TFEA) in different molar ratios to obtain mono- and di-hydrido-aluminium enaminonates. Both air and moisture sensitive compounds could be purified via sublimation under reduced pressure. The spectroscopic analysis and structural motif of the monohydrido compound [H-Al(TFB-TBA)(2)] (3) showed a monomeric 5-coordinated Al(III) centre bearing two chelating enaminone units and a terminal hydride ligand. However, the dihydrido compound exhibited a rapid C-H bond activation and C-C bond formation in the resulting compound [(Al-TFB-TBA)-HCH2] (4a), which was confirmed by single crystal structural data. The intramolecular hydride shift involving the migration of a hydride ligand from aluminium centre to the alkenyl carbon of the enaminone ligand was probed and verified by multi-nuclear spectral studies (H-1,H-1 NOESY, 13C, F-19, and Al-27 NMR).

引用

页数：14

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