申请人:Kuraray Co., Ltd.
公开号:EP1489087A1
公开(公告)日:2004-12-22
Bisphosphines represented by the general formula (I)
wherein Ar1 and Ar2 each represents an arylene group which may be substituted; R1 and R2 each represents an alkyl group which may be substituted, or an aryl group which may be substituted, or R1 and R2 may combinedly form a ring together with the phosphorus atom bonded thereto; R3 and R4 each represents hydrogen atom or an alkyl group; and the carbon atoms each having R3 and R4 are bonded in positions ortho to the oxygen atom bonded to Ar1 and Ar2: process for production thereof; Group VIII metal complexes comprising said bisphosphines; and process for producing aldehydes, which comprises, on hydroformylation of ethylenically unsaturated compounds with carbon monoxide and hydrogen, using said Group VIII metal complexes.
The hydroformylation of ethylenically unsaturated compounds according to the present invention can produce n-aldehydes at higher reaction rate and industrially more advantageously than with catalysts comprising conventional phosphines, while suppressing side reactions such as hydrogenation and isomerization.
通式(I)代表的双膦化合物
其中 Ar1 和 Ar2 各代表一个可被取代的芳基;R1 和 R2 各代表一个可被取代的烷基,或一个可被取代的芳基,或 R1 和 R2 可结合形成一个环,连同与其结合的磷原子;R3 和 R4 各代表氢原子或烷基;具有 R3 和 R4 的碳原子以正交位置与 Ar1 和 Ar2 所结合的氧原子结合:其生产工艺;包含所述二膦的第 VIII 族金属络合物;以及生产醛的工艺,其中包括使用所述第 VIII 族金属络合物对乙烯基不饱和化合物与一氧化碳和氢进行氢甲酰化反应。
根据本发明,乙烯基不饱和化合物的氢甲酰化反应与使用包含传统膦的催化剂相比,能以更高的反应速率生产正醛类化合物,在工业上更具优势,同时还能抑制氢化和异构化等副反应。