Inorganic Chemistry, Vol.59, No.17, 11915-11919, 2020
Pillararene-Based Rotaxane: Synthesis, Characterization, and Application in a Coupling Reaction
Mechanically interlocked molecules are a class of smart supramolecular species because of their interesting topological structure and application in various areas, such as biology and nanoscience. In this work, we used "multicomponent reaction" to fabricate a new rotaxane based on pillararene from different small-sized molecules. The molecular structure of the obtained rotaxane R was confirmed by H-1 and C-13 NMR, high-resolution electrospray ionization mass spectrometry, two-dimensional nuclear Overhauser effect spectroscopy, and density functional theory studies. Interestingly, the rotaxane-based organometallic cross-linked catalyst (Pd@R) was easily constructed via the coordination between triazole groups and Pd(NO3)(2). Pd@R proved to be a good catalyst for the Suzuki-Miyaura coupling reaction with excellent stability and repeatability.