Dihydrodihydroxycinnamic acids and their esters react with acetonitrile or benzonitrile in the presence of sulfuric acid to afford the corresponding syn-β-amino-α-hydroxypropionic acid derivatives. High yields and diastereoselectivity of this transformation allows preparation of various phenylisoserine derivatives on a practical scale.
在
硫酸存在下,二氢二
羟基肉桂酸及其酯与
乙腈或
苄腈反应,得到相应的顺-β-
氨基-α-羟基
丙酸衍
生物。该转化的高产率和非对映选择性允许以实际规模制备各种苯基异
丝氨酸衍
生物。