moved over the proximate neopentyl group to deconstruct the interlocked structure. The wheel component in the rotaxane, however, quantitatively moved against the proximate end-cap by the action of trifluoroaceticanhydride in the presence of excess triethylamine. This motion, which was driven by the simple one-shot acylation reaction, can be referred as the active transport. When the distant end-cap is
Synthesis and Fluorescence Properties of Selectively Metallated Diporphyrins with Electron-Accepting Moieties
作者:Toshi Nagata
DOI:10.1246/bcsj.64.3005
日期:1991.10
Synthesis of selectively metallated diporphyrins with electron-accepting moieties is described. Steady-state fluorescence spectra of these compounds snowed substantial quenching of the fluorescence of the free-base porphyrin. A possible “superexchange” mechanism of long-range electron transfer is discussed.
Natural deep eutectic solvents promote low-impact acetalization reactions on a wide range of substrates. The reaction medium is fully recycled without weakening of the catalytic activity up to ten times.