Synthesis of Kaolin/Ag Nanocomposite as an Efficient and Versatile Reagent for the Synthesis of 1,8-Dioxo-Octahydroxanthene Derivatives

摘要

Kaolin/Ag nanocomposite was synthesized in a nano reactor by the calcination of the precursor at high temperature, and shown to efficiently catalyze 1,8-dioxo-octahydroxanthene synthesis via condensation of aromatic aldehydes and 5,5-dimethyl-1,3- cyclohexanedione under mild reaction conditions in good to excellent yields.