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US5808166A Method for producing 3,4-dihydroxy-3-cyclobutene-1,2-dione 失效
3,4-二羟基-3-环丁烯-1,2-二酮的制备方法

Method for producing 3,4-dihydroxy-3-cyclobutene-1,2-dione
摘要:
In the formulae, R.sup.1 represents alkyl; and R.sup.2, R.sup.3 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).
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