3-OXY-2-CYCLOBUTNENE-1-ON BASIC SALTS AND METHOD FOR THEIR PRODUCTION Russian patent published in 1997 - IPC

FIELD: organic chemistry. SUBSTANCE: desired salts have formula where R is either ammonium group having common formula (where R₁,R₂ and R₃ are the same or different and represent hydrogen atom, lower alkyl or cycloalkyl) or atom of alkali metal. Desired salts are prepared by interaction of base with pure 3-acetoxy-2-cyclobutene-1-on, 1,3-cyclobutanedion or vat residue being prepared during production of diketen and comprising 3-acetoxy-2-cyclobutene-1-on. Amine having common formula where R₁,R₂ and R₃ are as mentioned above or alcoholate or hydroxide of alkali metal is used as said base. EFFECT: improved quality of desired product. 17 cl