C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 45/63 (2006.01) C07C 45/43 (2006.01) C07C 49/517 (2006.01) C07C 49/707 (2006.01)
Patent
CA 2223772
(see formula I and II) 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).
La présente invention concerne un procédé de préparation de 3,4-dihydroxy-3-cyclobutène-1,2-dione représenté par la formule générale (II) par hydrolyse de dérivés du 3-alcoxy-2,2,4,4-tétrahalogénocyclo-butanone représentés par la formule générale (I) dans laquelle R<1> est alkyle, et R<2>, R<3> et X sont chacun indépendamment halogéno.
Matsushita Shoshiro
Okajima Asako
Shimizu Ikuo
Toyoda Hiroshi
Usami Takeshi
Goudreau Gage Dubuc
Kyowa Yuka Co. Ltd.
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