Asymmetric α-oxyamination of aldehydes by synergistic catalysis of imidazolethiones and metal salts
作者:Xianrui Liang、Na Li、Xinlei Chen、Weike Su
DOI:10.1039/c4ra08556f
日期:——
Novel and efficient imidazolethione catalysts combined with metal salts were successfully introduced to the asymmetric α-oxyamination of aldehydes. The desired products with high yields and good to excellent enantioselectivities were obtained via a one-pot oxidation–oxyamination reaction system.
Peptide/Laccase Cocatalyzed Asymmetric α-Oxyamination of Aldehydes
作者:Kengo Akagawa、Kazuaki Kudo
DOI:10.1021/ol2012956
日期:2011.7.1
An asymmetric α-oxyamination could be successfully performed by a peptide catalyst and laccase. The combination of peptide catalysis and enzymatic air oxidation promoted the reaction smoothly in water without employing a metal reagent. The oxyaminated compounds could be obtained as both aldehyde and carboxylic acid products depending on the reaction conditions.
An efficient tandem reaction system was developed, in which primary alcohols were used for the oxidation to the corresponding aldehydes followed by an asymmetric alpha-oxyamination with a resin-supportedpeptidecatalyst.