Answers are grounded in this paper and cite their sources.
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.
No takes yet. Share an insight, caveat, or question.
Chakraborti et al. (2006) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: