Self-Activated Supramolecular Reactions: Effects of Host−Guest Recognition on the Kinetics of the Diels−Alder Reaction of Open-Chain Oligoether Quinones with Cyclopentadiene
作者:Akihiko Tsuda、Chikako Fukumoto、Takumi Oshima
DOI:10.1021/ja021444t
日期:2003.5.1
by the direct interaction between the metal cation accommodated in the pseudo-cyclic oligoether linkage and the quinone carbonyl oxygen, as indicated by (1)H NMR spectroscopy. In addition, the larger rate enhancement is rather achieved in the complex with low binding constant K, because the strong encapsulation of metal cation by the oligoether chain diminishes the crucial interaction to the quinone