mechanistic investigation was performed to elucidate the reaction mechanism. For the cyclization of geranyl acetate, it was found that the cleavage of the leaving group is the rate-determining step. Furthermore, the studies revealed that trace amounts of acid are required as cocatalyst. A series of control experiments demonstrate that a synergistic interplay between the supramolecular capsule and the
从头到尾的萜烯环化可以说是自然界中最复杂的反应之一。氢键基间苯二甲烯胶囊代表了第一个能够催化该反应的人造酶样催化剂。基于胶囊和底物之间的非共价相互作用,可以通过使用不同的离去基团来调节产物的选择性。进行了详细的机理研究以阐明反应机理。对于
乙酸香叶酯的环化,发现离去基团的裂解是决定速率的步骤。此外,研究表明需要痕量的酸作为助催化剂。一系列对照实验表明,超分子胶囊和酸痕迹之间的协同相互作用是催化活性所必需的。