دورية أكاديمية

Dibenzoazepine hydrazine is a building block for N-alkene hybrid ligands: exploratory syntheses of complexes of Cu, Fe, and Li.

التفاصيل البيبلوغرافية
العنوان: Dibenzoazepine hydrazine is a building block for N-alkene hybrid ligands: exploratory syntheses of complexes of Cu, Fe, and Li.
المؤلفون: Grasruck, Alexander, Schall, Kristina, Heinemann, Frank W., Langer, Jens, Herrera, Alberto, Frieß, Sybille, Schmid, Günter, Dorta, Romano
المصدر: Dalton Transactions: An International Journal of Inorganic Chemistry; 5/28/2024, Vol. 53 Issue 20, p8642-8656, 15p
مصطلحات موضوعية: COPPER, HYDRAZINES, ALKENES, HYDRAZINE, PROTON transfer reactions, ELECTROPHILES
مستخلص: The new hydrazine 5H-dibenzo[b,f]azepin-5-amine (2) reacts with P- and Si-electrophiles via deprotonation to afford P(III)-, P(V)-, and TMS-hydrazides 3–8 and with carbonyl electrophiles via acid-free condensation to the N-substituted hydrazones 9–12 that are potential N-alkene ligands. While β-ketohydrazone 9 and α-dihydrazone 10 react with [Mes(Cu)]4, [Cu(NCCCH3)4]2PF6, and FeCl2(THF)1.5 to afford complexes devoid of alkene interaction, [Cu(OTf)]2·C6H6 reacts with the α-keto hydrazone 11 or with N,N dimethyl-hydrazone 12 to form the neutral dimeric Cu(I) complex 18 with bridging Cu(I)–alkene interactions or the tetrahedral cationic complex 19 in which 12 binds as a bidentate hydrazone-alkene ligand, respectively. The surprising stability of the alkene coordination in complexes 18 and 19 prevents substitutions with, e.g., PPh3. [ABSTRACT FROM AUTHOR]
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