申请人:Air Products and Chemicals, Inc.
公开号:US06559308B1
公开(公告)日:2003-05-06
The present invention relates to a method for preparing quinoxaline-5- and 6-carboxylic acids. The method comprises contacting an aqueous suspension of a 5- or 6-hydroxymethyl quinoxaline with oxygen in the presence of a transition metal catalyst, to form the respective quinoxaline-5- or 6-carboxylic acid. The method for oxidizing benzylic methyl groups may also be employed to prepare a wide variety of heterocyclic carboxylic acid compounds.
本发明涉及一种制备喹喔啉-5-和6-羧酸的方法。该方法包括将5-或6-羟甲基喹喔啉的水悬浊液与氧气在过渡金属催化剂存在下接触,形成相应的喹喔啉-5-或6-羧酸。氧化苄基甲基基团的方法也可用于制备各种杂环羧酸化合物。