The invention relates to a method for the production of L-carnitine, wherein a chiral β-lactone carnitine precursor is obtained by a [2+2] cycloaddition of ketene with an aldehyde X-CH2-CHO, wherein X is selected from Cl, Br, I and trimethylamine, in the presence of a chiral catalyst.
本发明涉及一种生产
左旋肉碱的方法,其中手性β-内酯肉碱前体是在手性催化剂存在下,通过烯酮与醛 X-
CH2-CHO(其中 X 选自 Cl、Br、I 和
三甲胺)的[2+2]环加成反应获得的。