Environmentally Benign, Highly Efficient and Expeditious Solvent-Free Synthesis of Trisubstituted Methanes Catalyzed by Sulfated Polyborate

Highly efficient and environmental friendly one-pot synthesis of trisubstituted methanes form aldehydes and heteroaryls with sulfated polyborate catalyst was conveniently performed under solvent-free grinding condition at room temperature. The catalyst is recyclable up to five consecutive runs and column chromatography-free isolation of the trisubstituted methanes in excellent yields was achieved.