《One-Pot Synthesis of a Linear [4]Catenate Using Orthogonal Metal Templation and Ring-Closing Metathesis》 was published in Inorganic Chemistry in 2020. These research results belong to Colley, Nathan D.; Nosiglia, Mark A.; Li, Lei; Amir, Faheem; Chang, Christy; Greene, Angelique F.; Fisher, Jeremy M.; Li, Ruihan; Li, Xuesong; Barnes, Jonathan C.. SDS of cas: 624-28-2 The article mentions the following:
The efficient synthesis of well-defined, linear oligocatenanes possessing multiple mech. bonds remains a formidable challenge in the field of mech. interlocked mols. Here, a one-pot synthetic strategy is described to prepare a linear [4]catenate using orthogonal metal templation between a macrocycle precursor, composed of terpyridine and phenanthroline ligands spaced by flexible glycol linkers, and a closed phenanthroline-based mol. ring. Implementation of two simultaneous ring-closing metathesis reactions after metal complexation resulted in the formation of three mech. bonds. The linear [4]catenate product was isolated in 55% yield as a mixture of topol. diastereomers. The intermediate metal complexes and corresponding interlocked products (with and without metals) were characterized by NMR, mass spectrometry, gel permeation chromatog., and UV-vis absorption spectroscopy. We envision that this general synthetic strategy may pave the way for the synthesis of higher order linear oligocatenates/catenanes with precise mol. weights and four or more interlocking mol. rings. The experimental part of the paper was very detailed, including the reaction process of 2,5-Dibromopyridine(cas: 624-28-2SDS of cas: 624-28-2)
2,5-Dibromopyridine(cas: 624-28-2) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. SDS of cas: 624-28-2