使用衍生自稳定的螺硼酸酯,通过硼烷介导的单一异构体 ( E )- 和 ( Z ) -O-苄基肟醚的还原,合成了高对映体纯的 (1-芳基)-和 (1-萘基)-1-乙胺( S )-二苯基缬氨醇和乙二醇作为手性催化剂。伯 ( R )-芳基乙胺是通过使用 15% 的催化剂将纯 ( Z )-乙酮肟醚还原至 99% ee来制备的。描述了使用对映纯(1-萘-1-基)乙胺作为手性前体合成新的和已知的拟钙剂类似物的两种方便且容易的方法。
使用衍生自稳定的螺硼酸酯,通过硼烷介导的单一异构体 ( E )- 和 ( Z ) -O-苄基肟醚的还原,合成了高对映体纯的 (1-芳基)-和 (1-萘基)-1-乙胺( S )-二苯基缬氨醇和乙二醇作为手性催化剂。伯 ( R )-芳基乙胺是通过使用 15% 的催化剂将纯 ( Z )-乙酮肟醚还原至 99% ee来制备的。描述了使用对映纯(1-萘-1-基)乙胺作为手性前体合成新的和已知的拟钙剂类似物的两种方便且容易的方法。
The Mild Synthesis of Oxime Phosphates by Atherton–Todd Reaction
作者:Ming Shu Wu、Xiang Zhu Zhang
DOI:10.3184/030823407x196944
日期:2007.3
The oximes (1a–i) on reaction with diethyl phosphonates (2) in the presence of triethylamine using chlorocarbons as solvents mildly provide oxime phosphates (3a–i) in good yields and have no the Beckmann rearrangement.
Pawar, Ramrao A., Heterocycles, 1984, vol. 21, # 2, p. 568
作者:Pawar, Ramrao A.
DOI:——
日期:——
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%).