| 摘要 |
A bisphosphite represented by the following general formula (I): (I) (wherein Ar1 and Ar2 each independently represents optionally substituted arylene; R1, R2,. R7, and R8 each independently represents optionally substituted alkyl, optionally substituted aryl, or optionally substituted heterocyclic group, provided that R1 and R2 or R7 and R8 may form a ring in cooperation with the oxygen atoms and phosphorus atom bonded to these; and R3, R4, R5, and R6 each independently represents hydrogen or alkyl, provided that the carbon atom having R3 and R4 and the carbon atom having R5 and R6 each is bonded in an ortho position to the Ar1-Ar2 bond); a process for producing an aldehyde compound which comprises using the bisphosphite and a compound of a metal in Groups 8 to 10; and a composition comprising the bisphosphite and a compound of a metal in Groups 8 to 10. |
