申请人:Nissan Chemical Industries, Ltd.
公开号:EP2133343A1
公开(公告)日:2009-12-16
[PROBLEMS] To provide an efficient process for producing an optically active epoxy compound.
[MEANS FOR SOLVING PROBLEMS] The process for producing an optically active epoxy compound comprises asymmetrically epoxidizing an unsaturated compound with an oxidizing agent in the presence of an optically active titanium-salen complex, an optically active titanium-salalen complex or an optically active titanium-salan complex, with addition of a buffering agent or a buffer solution. The process can inhibit catalyst degradation, reduce the amount of the catalyst used in the reaction, and inhibit a by-product, compared with the prior art, and can provide an optically active epoxy compound in high chemical yield and optical yield and with high quality, and therefore is an industrially useful process.
[问题] 提供一种生产光学活性环氧化合物的高效工艺。
[解决问题的方法]生产光学活性环氧化合物的工艺包括:在光学活性钛-莎伦络合物、光学活性钛-莎伦络合物或光学活性钛-莎兰络合物存在下,用氧化剂将不饱和化合物不对称地环氧化,同时加入缓冲剂或缓冲溶液。与现有技术相比,该工艺可抑制催化剂降解,减少反应中催化剂的用量,抑制副产物的产生,并可提供化学收率和光学收率高、质量好的光学活性环氧化合物,因此是一种工业上有用的工艺。