229340-62-9Relevant articles and documents
A bridged bis-amide-based rare earth amine compound and its preparation method and application
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Paragraph 0047; 0048, (2017/04/21)
The invention discloses bridged bisamido rare-earth amide compounds, and a preparation method and catalytic application thereof. The general formula of the rare-earth compounds is {LLn[N(SiMe3)2].THF}2, and the chemical structural formula is disclosed in the specification. In the general formula, L represents a bridged bisamido ligand, and the ligand LH2 is N,N'-(cyclohexane-1,2-diyl)bis(4-tert-butylbenzamide); and Ln is a rare-earth metal selected from lanthanum, neodymium, samarium, yttrium or ytterbium. The bridged bisamido rare-earth amide compounds have the advantages of simple synthesis process, definite structure and high yield. The invention also discloses a preparation method of the compounds and an application method of the compounds as a catalyst for catalyzing carboxylation reaction between alkynyl terminal group and carbon dioxide. The application method has the advantages of mild conditions, high activity, favorable selectivity and wide substrate application range.