A ferrocene-templated Pd-bearing molecular reactor

Abstract

<p>Synthesis of a novel ferrocene-templated cage and a palladium derivative of this cage, as well as the use of this cage as a molecular reactor toward efficient 1,1′-biphenyl synthesis, is presented.</p>

A chromatography-free total synthesis of a ferrocene-containing dendrimer exhibiting the property of recognizing 9,10-diphenylanthracene

“…The synthetic studies were initiated by synthesizing 1,3,5-(4aminophenyl)triphenylbenzene (3; Fig. 3a) in two steps following the literature procedure 5 . With 3 at hand, the preparations of 1 and 2, the key building blocks of Fc-den, were investigated.…”

“…The basics of template's action were as follows 23a,23b . Firstly, from the previous report 5 it is known that confined space of cage 8 is too small to incorporate aromatic molecule (guest), such as 9,10-diphenylanthracene, between stacked 1,3,5triphenylbenzene moieties. Secondly, a π-π stacking interaction, a dynamic process, between 9,10diphenylanthracene and 3 and 1 were expected during a reaction course.…”

“…Over the years, ferrocene (Fc) has been a coordination compound of a wide interest of organic and materials chemistry. 1,2 This metallocene has various prospective applications in a number of important fields, such as medicinal chemistry 3 , self-healing materials 4 , catalysis 5 or ion receptors 6 . Even though the discovery of Fc has been accomplished 80 years ago, in the recent years its chemistry has developed remarkably, and Fc-containing molecules have been important synthetic targets.…”

“…In general, we hypothesized that sequential imine-bond formation reactions shall provide the target dendrimer and intermediate compounds. Importantly, the success of this strategy would be also beneficial in terms of a green synthesis of Fc-den, since the previous studies on imine-containing triphenylbenzenes 5,21,22 suggest that no chromatographic purification shall be required.…”

Emerging Spacers‐Based Ligands for Supramolecular Coordination Complexes

“…Gunka and co‐workers reported a neutral ferrocene spacer based trigonal prismatic cage 19 a [48] . Three pairs of imine donors with the parallel arrangement in the framework were utilized to convert homometallic cage 19 a into heterometallic cage 19 b via coordination with trans ‐protected Pd(II)‐cores.…”