作者:Khiangte Vanlaldinpuia、H Atoholi Sema、Lalthazuala Rokhum、Ghanashyam Bez
DOI:10.1246/cl.2010.228
日期:2010.3.5
Cbz-protection of aliphatic and aromatic amines can be accomplished with benzylchloroformate using a catalytic amount of dodecatungstophosphoric acid hydrate (0.05 equiv). The reaction is simple, fast, does not require aqueous work-up and gives excellent yields.
Amberlyst-15 Catalyzed Cbz Protection of Amines Under Solvent-Free Conditions
作者:Pranja P. Bora、Khiangte Vanlaldinpuia、Lalthazuala Rokhum、Ghanashyam Bez
DOI:10.1080/00397911.2010.515341
日期:2011.9.15
Amberlyst-15 can effectively catalyze Cbz protection of aliphatic and aromatic amines within 10-15 min under solvent-free conditions. The catalyst can be used repeatedly without loss of activity, and the reaction requires no workup and gives excellent yields.