Synthesis of .BETA.-(sec-Amino)alanines.
作者:Nobuhiro ABE、Fumiko FUJISAKI、Kunihiro SUMOTO
DOI:10.1248/cpb.46.142
日期:——
Preparation of β-(sec-amino)alanines (3) by acid hydrolysis of diethyl (sec-aminomethyl)formamidomalonates (2) was studied. Although high reaction temperature resulted in low yield, low reaction temperature (below 30°C) gave good to excellent yields. The hydrolysis of diethyl formamido(piperidinomethyl)malonate (2a) was followed by 1H-NMR, and a plausible mechanism involving the condensation of ethyl hydrogen aminomalonate (7) with 1-piperidinemethanol (5) is proposed.
研究了通过酸水解二乙基(sec-氨基甲基)甲酰基丙二酸盐(2)制备β-(sec-氨基)丙氨酸(3)。尽管高反应温度导致低产率,但低反应温度(低于30°C)则可以获得良好到优异的产率。对二乙基甲酰基(哌啶甲基)丙二酸盐(2a)的水解进行了1H-NMR监测,并提出了一种可能的机制,涉及乙基氢氨基丙二酸盐(7)与1-哌啶甲醇(5)的缩合反应。