Synthesis of α-amino acids by ring opening of aziridine-2-carboxylates with carbon nucleophiles
作者:Nicola J Church、Douglas W Young
DOI:10.1016/0040-4039(94)02198-k
日期:1995.1
Excellent regiospecificity has been achieved in the reaction of carbon nucleophiles with N-para-toluenesulfonylaziridine-2-carboxylic acid (6, R = H protected as the anion. This has been developed into a general and high yielding synthesis of optically pure α-amino acids containing one chiral centre. When the aziridine (20) containing a second chiral centre was used, only lithium trimethylsilylacetylide
优良区域专一已经结合碳亲核试剂的反应而完成ñ -对-toluenesulfonylaziridine -2-羧酸(6,R = H的保护作为阴离子这已经发展成旋光纯的α氨基的一般和高产合成。含一个手性中心的酸,当使用含第二个手性中心的氮丙啶(20)时,只有三甲基甲硅烷基乙炔化锂可得到所需的α-氨基酸,与高价铜酸盐反应可得到较低的收率,主要产物为受保护的β-氨基酸(22)和(23)。