Method for preparing L-carnitine

Abstract

A process for preparing L-carnitine includes such steps as asymmetrical catalytic hydrogenating reaction and low-temp phase transfer reaction under existence of alkaline catalyst. Its advantage is high output rate up to 70%. 本发明涉及一种制备L-肉碱的方法，其包括如下步骤：步骤1（如图）步骤2（如图）其中，步骤1采用不对称催化氢化反应，步骤2采用相转移反应、碱性催化剂和低温反应条件，从而大大提高了产物L-肉碱的收率，总收率高达70％。