Sulfated tungstate: A highly efficient, recyclable and ecofriendly catalyst for chemoselective <i>N</i>-tert butyloxycarbonylation of amines under the solvent-free conditions
作者:Ajit P. Ingale、Sandeep V. Shinde、Nitin M. Thorat
DOI:10.1080/00397911.2021.1942060
日期:2021.8.18
Abstract Sulfated tungstate catalyzed an efficient and ecofriendly protocol has been described for the chemoselective N-tert-butyloxycarbonylation of amines under the solvent-freeconditions at roomtemperature. The variety of functionalized aliphatic, aromatic and heteroaromatic amines efficiently undergoes the N-tert-butyloxycarbonylation under the developed protocol. The aminoalcohol, aminophenol
Enantioselective synthesis of anti-β-amido-α-hydroxy esters via asymmetric transfer hydrogenation coupled with dynamic kinetic resolution
作者:Marvin Villacrez、Peter Somfai
DOI:10.1016/j.tetlet.2013.07.100
日期:2013.9
The asymmetric transfer hydrogenation of β-amido-α-keto esters providing the corresponding anti-β-amido-α-hydroxy esters via dynamic kinetic resolution is reported. The use of a commercially available, or simply prepared, chiral ruthenium catalyst results in good yields as well as high diastereoselectivities and enantioselectivities.