Zinc-mediated carbon radical addition to glyoxylic imines in aqueous media for the synthesis of α-amino acids
作者:Masafumi Ueda、Hideto Miyabe、Hisako Sugino、Takeaki Naito
DOI:10.1039/b418726a
日期:——
glyoxylic imines was studied using zinc dust as a radical initiator. The zinc-mediated radical reaction of glyoxylic oxime ethers and hydrazones proceeded smoothly to give the alkylated products via a carbon-carbon bond-forming process in aqueous media. The reaction of the oxime ethers and hydrazones having an Oppolzer's camphorsultam group provided the corresponding alkylated products, which could be converted
使用锌粉作为自由基引发剂,研究了向乙醛酸亚胺中添加碳自由基的方法。乙醛酸肟醚和的锌介导的自由基反应顺利进行,从而通过在水性介质中形成碳-碳键的方法得到烷基化产物。具有Oppolzer's樟脑素基团的肟醚和hydr的反应提供了相应的烷基化产物,可以将其转化为对映体纯的α-氨基酸。在hydr的反应中观察到的非对映选择性优于在肟醚的反应中获得的非对映选择性。