Asymmetric Reductive Acylation of Aromatic Ketoximes by Enzyme-Metal Cocatalysis
作者:Kiwon Han、Jaiwook Park、Mahn-Joo Kim
DOI:10.1021/jo800270n
日期:2008.6.1
We have developed an efficient procedure for the asymmetric synthesis of chiral amides from ketoximes. This one-pot procedure employs two different types of catalysts, Pd nanocatalyst and lipase, for three consecutive transformations including hydrogenation, racemization, and acylation. Eight ketoximes have been efficiently transformed to the corresponding amides in good yields (83-92%) and high enantiomeric excesses (93-98%).
Dehydrative Beckmann rearrangement and the following cascade reactions
作者:Yongjiao Wei、Yinghui Liu、Lan-Gui Xie
DOI:10.1016/j.cclet.2021.10.020
日期:2022.5
The Beckmannrearrangement has been predominantly studied for the synthesis of amide and lactam. By strategically using the in situ generated Appel's salt or Mitsunobu's zwitterionic adduct as the dehydrating agent, a series of Beckmannrearrangement and following cascade reactions have been developed herein. The protocol allows the conversion of various ketoximes into amide, thioamide, tetrazole and