A mixed lithiumâcadmium amide and a combination of lithium and zinc amides were reacted with a range of ferrocenes; deprotonative mono- or dimetallation in general occurred chemoselectively at room temperature, as evidenced by subsequent quenching with iodine.
HFIP‐Promoted Substitution in the Ferrocene Series: Smooth Approach towards Original Catalysts**
作者:William Erb、Victor Carré、Thierry Roisnel
DOI:10.1002/ejoc.202100824
日期:2021.11.8
Pseudo-benzylic substitution promoted by fluorinated solventfrom various iodoferrocenes is described. These new reaction conditions allow the fast generation of libraries of derivatives for applications in catalysis for example, as demonstrated with the synthesis of original ligands used in cross-coupling reactions.
On the
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‐Arylation of Acetamide Using 2‐, 3‐ and 1’‐Substituted Iodoferrocenes**
作者:Lingaswamy Kadari、William Erb、Yury S. Halauko、Oleg A. Ivashkevich、Vadim E. Matulis、Dmitry Lyakhov、Thierry Roisnel、Palakodety Radha Krishna、Florence Mongin
DOI:10.1002/ejic.202000904
日期:2021.1.26
range of original 1,2‐, 1,3‐ and 1,1’‐disubstituted ferrocenes to be obtained. The results were compared as a function of the substituent and its position on the ring. DFT calculations revealed higher activation barrier for the oxidative addition in the ferrocene series when compared with classical planar aromatics. Structure‐property relationships were applied to rationalize the reactivity of the different
Selective functionalization of the 1′-position in ferrocenecarbaldehyde
作者:Gabriel Iftime、Caroline Moreau-Bossuet、Eric Manoury、Gilbert G. A. Balavoine
DOI:10.1039/cc9960000527
日期:——
An efficient and selective new method for the preparation of unsymmetrical 1,1'-disubstituted ferrocenes by a one-pot procedure, starting from ferrocenecarbaldehyde, is disclosed.