title: HClO4-SiO2 as a new, highly efficient, inexpensive and reusable catalyst for N-tert-butoxycarbonylation of amines.
abstract: Perchloric acid adsorbed on silica-gel (HClO4-SiO2) was found to be a new, highly efficient, inexpensive and reusable catalyst for chemoselective N-tert-butoxycarbonylation of amines at room temperature and under solvent-free conditions.
authors.affiliation: Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S. A. S. Nagar 160 062, Punjab, India. akchakraborti@niper.ac.in
authors.forename: Asit K
authors.initials: AK
authors.lastname: Chakraborti
authors.forename: Sunay V
authors.initials: SV
authors.lastname: Chankeshwara
mesh_terms: D000588:Amines / Q000737:chemistry*; D002254:Carbonates / Q000737:chemistry*; D002384:Catalysis; D010472:Perchlorates / Q000737:chemistry*; D058428:Silica Gel; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D000588:Amines; D002254:Carbonates; D010472:Perchlorates; D058428:Silica Gel; D012822:Silicon Dioxide; C027600:bis(tert-butoxycarbonyl)oxide