申请人:Central Glass Company, Limited
公开号:US20040049076A1
公开(公告)日:2004-03-11
The invention relates to a process for producing 3,3,3-trifluoro-2-hydroxypropionic acid. This process includes the step of (a) bringing a 1,1-dihalogeno-3,3,3-trifluoroacetone into contact with a basic aqueous solution. The obtained 3,3,3-trifluoro-2-hydroxypropionic acid may be reacted with a C
1
-C
6
lower alcohol under an acidic condition, thereby producing a 3,3,3-trifluoro-2-hydroxypropionate. This propionate may be reacted with a hydride reducing agent (e.g., sodium borohydride), thereby producing 3,3,3-trifluoro-2-hydroxypropanol. These products (i.e., 3,3,3-trifluoro-2-hydroxypropionic acid and its derivatives) are important intermediates for medicines and liquid crystals.
该发明涉及一种制备3,3,3-三氟-2-羟基丙酸的方法。该方法包括步骤(a)将1,1-二卤代-3,3,3-三氟丙酮与碱性水溶液接触。得到的3,3,3-三氟-2-羟基丙酸可在酸性条件下与C1-C6低级醇发生反应,从而产生3,3,3-三氟-2-羟基丙酸酯。这种丙酸酯可与氢化还原剂(如硼氢化钠)反应,从而产生3,3,3-三氟-2-羟基丙醇。这些产品(即3,3,3-三氟-2-羟基丙酸及其衍生物)是药物和液晶的重要中间体。