Y(NO3)3·6H2O catalyzed regioselective ring opening of epoxides with aliphatic, aromatic, and heteroaromatic amines
作者:Mayur J. Bhanushali、Nitin S. Nandurkar、Malhari D. Bhor、Bhalchandra M. Bhanage
DOI:10.1016/j.tetlet.2008.03.152
日期:2008.5
Yttrium nitrate hexahydrate [Y(NO3)3·6H2O] was found to be an efficient catalyst for selective ring opening of epoxides with aliphatic, aromatic, and heteroaromatic amines at room temperature under solvent-free conditions. The system tolerated a variety of hindered and functionalized epoxides/amines and afforded the desired β-amino alcohols at low catalyst concentration.
Mild regiospecific alcoholysis and aminolysis of epoxides catalyzed by zirconium(IV) oxynitrate
作者:Sandip S. Shinde、Madhukar S. Said、Trupti B. Surwase、Pradeep Kumar
DOI:10.1016/j.tetlet.2015.09.031
日期:2015.10
A regiospecific method for the ring-opening reaction of epoxides by the primary, secondary, tertiary alcohols, and aryl, aliphatic amines has been developed using non-toxic metal nitrate salt as a catalyst. The best results were obtained using zirconium(IV) oxynitrate among the various screened metal nitrate salts. The reported protocol works efficiently for styrene epoxide and aliphatic as well.