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    • 5. 发明公开
    • Process for producing a lactone or an ester
    • Verfahren zur Herstellung von einem Lacton oder von einem Ester。
    • EP0548774A1
    • 1993-06-30
    • EP92121383.1
    • 1992-12-16
    • SUMITOMO CHEMICAL COMPANY, LIMITED
    • Murahashi, Shun-IchiOda, Yoshiaki
    • C07D309/30C07D313/04C07D313/18C07C67/42C07J63/00C07B41/12
    • C07D315/00C07B41/12C07C67/42C07J73/003
    • A process for producing a lactone or an ester represented by the following general formula (2), wherein R¹ and R², identical or different, each represents (C₁-C₂₀) alkyl group; alkyl group substituted with a terminal alkenyl, halogen, alkoxy, phenoxy or acyloxy; phenyl group; or phenyl group substituted with alkyl, halogen, alkoxy, phenoxy or acyloxy; phenylalkyl group; or phenylalkyl group substituted with alkyl, halogen, alkoxy, phenoxy or acyloxy; provided that when R¹ and R², identical or different, each represents unsubstituted alkyl group or alkyl group substituted with a terminal alkenyl, halogen, alkoxy, phenoxy, acyloxy or phenyl, the respective alkyl parts of R¹ and R² may be conjunct to each other; which comprises reacting a ketone represented by the following general formula (1), wherein R¹ and R² are as defined above, with oxygen in the presence of an aldehyde either in the absence of catalyst or in the presence of a heterogeneous iron-containing or ruthenium-containing catalyst:

         The above-mentioned process of this invention is an advantageous process for producing lactones or esters by the oxidation of ketones with oxygen either using no catalyst or using a readily available and recoverable catalyst.
    • 由下列通式(2)表示的内酯或酯的制造方法相同或不同,分别表示(C1-C20)烷基; 被末端烯基,卤素,烷氧基,苯氧基或酰氧基取代的烷基; 苯基; 或被烷基,卤素,烷氧基,苯氧基或酰氧基取代的苯基; 苯基烷基; 或被烷基,卤素,烷氧基,苯氧基或酰氧基取代的苯基烷基; 条件是当R 1和R 2相同或不同时,各自表示未取代的烷基或被末端烯基,卤素,烷氧基,苯氧基,酰氧基或苯基取代的烷基,R 1的各个烷基部分 和R 2可以彼此结合; 其中包括使下列通式(1)表示的酮,其中R 1和R 2如上定义,在不存在催化剂的情况下,在醛的存在下,或在存在 不同含铁或含钌催化剂:本发明的上述方法是通过用氧氧化酮或不使用催化剂或使用容易获得和可回收的催化剂来生产内酯或酯的有利方法。