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    • 10. 发明申请
    • 3−オキソシクロペンタン−1−カルボン酸またはそのエステルの製造方法
    • 生产3-氧代环戊-1-烯羧酸或其酯的方法
    • WO2005108341A1
    • 2005-11-17
    • PCT/JP2005/008828
    • 2005-05-10
    • 株式会社クラレ杉岡 尚
    • 杉岡 尚
    • C07C51/38
    • C07C51/38C07C67/32C07C2601/08C07C62/24C07C69/757
    • Disclosed is a method for producing a compound represented by the general formula (II) below which is characterized in that a compound represented by the general formula (I) below is reacted with water without a catalyst or in the presence of an acid catalyst. (In the formula, R , R , X , X , X , X and X respectively represent a hydrogen atom, an alkyl group or an aryl group; R and R respectively represent a hydrogen atom, an alkyl group, an aryl group or a group represented by the general formula: -CO2R ; at least one of X , X , X , X and X represents a group represented by the general formula: -CO2R and the rest of them respectively represent a hydrogen atom, an alkyl group or an aryl group; R and R respectively represent an alkyl group or an aryl group; R and R respectively represent a hydrogen atom, an alkyl group, an aryl group or a group represented by the general formula: -CO2R ; and R represents a hydrogen atom, an alkyl group or an aryl group.)
    • 公开了下述通式(II)表示的化合物的制造方法,其特征在于,将下述通式(I)表示的化合物与没有催化剂的水或酸催化剂的存在下反应。 (式中,R 1,R 6,X 6,X 7,X 8,X 9和X 10分别表示氢原子,烷基或 芳基; R 2和R 3分别表示氢原子,烷基,芳基或由通式-CO 2 R 4表示的基团; X 1,X 2中的至少一个 X 3,X 4和X 5表示由通式-CO 2 R 5表示的基团,其余的分别表示氢原子,烷基或芳基 ; R 4和R 5分别表示烷基或芳基; R 7和R 8分别表示氢原子,烷基,芳基或由通式表示的基团 :-CO 2 R 9; R 9表示氢原子,烷基或芳基。)