An Access Route to Polyferrocenes via Modular Conjugation

Abstract

The application of copper‐catalyzed azide/alkyne cycloaddition to monomers containing a ferrocene unit leads to polyferrocenes with ferrocene in the backbone. Catalyst performance and kinetic studies of a model system comprising 1,1'‐bis(azidoethyl)ferrocene and propargyl ether revealed the usage of CuI and DBU as the catalyst in DMF at 50 °C as efficient reaction conditions for the synthesis. The resulting polymers display molecular weight‐averages up to $\overline {M} _{{\rm n}} $ = 10 000 and $\overline {M} _{{\rm w}} $ = 33 000. The polyaddition of monomers both containing ferrocene units led to polyferrocenes with $\overline {M} _{{\rm n}} $ between 4 000 and 11 000 ($\overline {M} _{{\rm w}} $ up to 78 000). The present study thus provides a pathway to polyferrocenes based on modular ligation chemistry. magnified image

Novel anticancer and antibacterial organometallic polymer based on ferrocene as a building block and xanthone bioactive scaffolds: Synthesis, characterization, and biological study

“…The obtained products, which were fine crystals, were recrystallized by n ‐heptane (6.24 g, yield = 89%) (Table ). The pure product synthesized by our modified procedure was confirmed by comparison with the existing literature . (m.p = 123°C‐127°C).…”

“…The pure product synthesized by our modified procedure was confirmed by comparison with the existing literature. 57 (m.p = 123°C-127°C).…”

Ferrocene‐Based Hyperbranched Polytriazoles: Synthesis by Click Polymerization and Application as Precursors to Nanostructured Magnetoceramics

“…The monomers used, ferrocene‐containing diazides ( 1 ) and tris(4‐ethynylphenyl)amine ( 2 ), were synthesized according to procedures reported in the literatures. [9a,10a]…”

“…With the enthusiastic efforts paid by polymer chemists, the azide–alkyne click reaction has been developed into an efficient polymerization reaction, that is, click polymerization, for the preparation of functional polytriazoles with linear and hyperbranched structures . We and others have recently synthesized several ferrocene‐based linear polytriazoles by the azide–alkyne click polymerizations . However, ferrocene‐based polytriazoles with hyperbranched structures have been rarely reported.…”

Click Chemistry: A Powerful and Versatile Methodology for Preparation of Ferrocene-Containing Polymers

“…As demonstrated by Barner-Kowollik et al, the Cu(I)-catalyzed AACP of Fc-containing diazides and diynes readily furnished Fc-containing polytriazoles (PTAs) (P31) with high molecular weights (M w up to 78 000 g mol -1 ) in 6 h (Scheme 13) [66].…”