Catalysis with Supramolecular Carbon-Bonding Interactions.

Herein, we describe a new catalysis platform, supramolecular carbon-bonding catalysis, which exploits the highly directional weak interactions between carbon centers of catalysts and electron donors to drive chemical reactions. To demonstrate this catalysis approach, we discovered a class of cyclopropane derivatives incorporated with carbonyl, ester and cyano groups as catalysts which showed general catalysis capability in different types of benchmark reactions. Among these typical examples, a challenging tail-to-head terpene cyclization can be achieved by supramolecular carbon-bonding catalysis. The co-crystal structures of catalyst and electron donors, comparison experiments, and titrations support a catalysis mode of carbon-bonding activation of Lewis basic reactants.