申请人:UBE INDUSTRIES, LTD.
公开号:EP0673914A2
公开(公告)日:1995-09-27
A process for preparing an a-keto acid ester (oxo acid) of the formula:
wherein R1 is a hydrogen atom, aliphatic alkyl group of 1-6 carbon atoms, phenyl group or benzyl group, and R2 is an aliphatic alkyl group of 1-6 carbon atoms, which comprises causing an a-hydroxycarboxylic acid ester of the formula:
to react with molecular oxygen in a gaseous phase in the presence of copper phosphate, possibly, mounted on a solid carrier.
一种制备式中的a-酮酸酯(羰基酸)的工艺:
其中 R1 是氢原子、1-6 个碳原子的脂肪族烷基、苯基或苄基,R2 是 1-6 个碳原子的脂肪族烷基,该工艺包括使式中的 a-羟基羧酸酯在气相中与分子氧反应,可能的话,在固体载体上安装磷酸铜:
在气相中与分子氧反应,磷酸铜可能安装在固体载体上。