申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0548774A1
公开(公告)日:1993-06-30
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.
一种生产由以下通式(2)代表的内酯或酯的工艺,其中 R¹ 和 R² 相同或不同,各自代表(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; 苯烷基;或被烷基、卤素、烷氧基、苯氧基或酰氧基取代的苯烷基;条件是当 R¹ 和 R² 相同或不同,各自代表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时,R¹ 和 R² 各自的烷基部分可以相互连接;其中包括在无催化剂或含铁或含钌的异相催化剂存在下,使通式(1)(其中 R¹ 和 R² 如上定义)所代表的酮与氧在醛存在下反应:
本发明的上述工艺是通过酮与氧的氧化反应生产内酯或酯的一种有利工艺,可以不使用催化剂,也可以使用易于获得和回收的催化剂。