A new synthesis of β-amino acids by use of ketene diethyl acetal as enolate equivalent
作者:Kai Rossen、Pavol Jakubec、Michael Kiesel、Matthias Janik
DOI:10.1016/j.tetlet.2005.01.114
日期:2005.3
Reaction of phenylsulfonyl formamides, readily available in a single step from an aromatic aldehyde and sodium phenylsulfinate, with ketene diethyl acetal under basic conditions gives N-formyl β-amino acid esters in good yield, which can be kinetically resolved with a lipase.
在碱性条件下,可轻松地从芳族醛和
苯基亚
磺酸钠单步获得的
苯磺酰基甲
酰胺与
乙烯酮二
乙缩醛在碱性条件下反应,可得到良好收率的N-甲酰基β-
氨基酸酯,可以用
脂肪酶动力学拆分。