Kumar JKP, Thirupathi B, Devaiah D, Prasad AN, Smirniotis P, Reddy BM. Rapid and Efficient N-tert-butoxy carbonylation of Amines Catalyzed by Sulfated Tin Oxide Under Solvent-free Condition. Orbital: Electron. J. Chem. 2018;10(7):503-508. Accessed January 29, 2026. https://periodicos.ufms.br/index.php/orbital/article/view/16023