Microwave-assisted addition of pyrroles to electron-deficient olefins:: A rapid entry to C-alkyl pyrroles

A general procedure for the Michael addition of pyrroles with electron-deficient olefins Using silica gel supported reagent under microwave irradiation, has been developed. This new method is fast, efficient, environmentally benign and solvent-free. A catalytic amount of BiCl3 is employed For moderately bulk electron-deficient olefins.