Friedel–Crafts alkylation of a cage enone: synthesis of aralkyl substituted tetracyclo[5.3.1.0[2,6].0[4,8]]undeca-9,11-diones and the formation of fascinating novel cage compounds with pyrrole and thiophene using Montmorillonite K-10

The intrinsic catalytic properties of Montmorillonite K-10 clay have been utilized for Friedel–Crafts alkylation of the polycyclic caged enone 1 using different carbo and heterocyclic aromatic systems leading to novel compounds. Carbon–carbon bond formation between the aromatic compounds and the cage system has led to three different types of products.