(1)
Kumar, J. K. P.; Thirupathi, B.; Devaiah, D.; Prasad, A. N.; Smirniotis, P.; Reddy, B. M. Rapid and Efficient N-Tert-Butoxy Carbonylation of Amines Catalyzed by Sulfated Tin Oxide Under Solvent-Free Condition. Orbital: Electron. J. Chem. 2018, 10, 503-508.