Bis(imino)pyridine ligand deprotonation promoted by a transient iron amide

被引：55

作者：

Bouwkamp, MW ^{[1
]}

Lobkovsky, E ^{[1
]}

Chirik, PJ ^{[1
]}

机构：

[1] Cornell Univ, Baker Lab, Dept Chem & Biol Chem, Ithaca, NY 14853 USA

来源：

INORGANIC CHEMISTRY | 2006年 / 45卷 / 01期

关键词：

D O I：

10.1021/ic051839o

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Addition of 2 equiv of LiNMe2 to the bis(imino)pyridine ferrous dichloride, ((PDI)-P-iPr)FeCl2 ((PDI)-P-iPr = (2,6-Pr-i(2)-C6H3N=CMe)(2)C5H3N), resulted in deprotonation of the chelate methyl groups, yielding the bis(enamide)pyridine iron dimethylamine adduct, ((iPr)PDEA)Fe-(NHMe2) ((iPr)PDEA = (2,6-Pr-i(2)-C6H3NC=CH2)(2)C5H3N). Performing a similar procedure with KN(SiMe3)(2) in THF solution afforded the corresponding bis(THF) adduct, ((iPr)PDEA)Fe(THF)(2). ((iPr)PDEA)Fe-(NHMe2) has also been prepared by addition of the free amine to the iron dialkyl complex, ((PDI)-P-iPr)Fe(CH2SiMe3)(2), implicating formation of a transient iron amide that is sufficiently basic to deprotonate the bis(imino)pyridine methyl groups. Deprotonation of the amine ligand in ((iPr)PDEA)Fe(NHMe2) has been accomplished by addition of amide bases to afford the ferrous amide-ate complexes, [((iPr)PDEA)Fe(mu-NMe2)M] (M = Li, K).

引用

页码：2 / 4

页数：3

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