申请人:Kyowa Yuka Co., Ltd.
公开号:EP0842919A1
公开(公告)日:1998-05-20
In the formulae, R1 represents alkyl; and R2, R3 and X independently represent halogen. The present invention relates to a method for producing 3,4-dihydroxy-3-cyclobutene-1,2-dione of general formula (II) by hydrolyzing 3-alkoxy-2,2,4,4-tetrahalogenocyclobutanone derivative of general formula (I).
式中,R1 代表烷基;R2、R3 和 X 独立地代表卤素。本发明涉及一种通过水解通式(I)的 3-烷氧基-2,2,4,4-四卤代环丁酮衍生物来生产通式(II)的 3,4-二羟基-3-环丁烯-1,2-二酮的方法。