Bisphosphine process for producing the same and use thereof

Details Bisphosphine process for producing the same and use thereof Bisphosphine process for producing the same and use thereof

2007-01-09

2007-01-09

Lorengo, J. A. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C502S150000, C502S152000, C502S155000, C502S104000, C568S013000

Reexamination Certificate

active

10506676

ABSTRACT:
Bisphosphines represented by the general formula (I)wherein Ar1and Ar2each represents an arylene group which may be substituted; R1and R2each represents an alkyl group which may be substituted, or an aryl group which may be substituted, or R1and R2may combinedly form a ring together with the phosphorus atom bonded thereto; R3and R4each represents hydrogen atom or an alkyl group; and the carbon atoms each having R3and R4are bonded in positions ortho to the oxygen atom bonded to Ar1and 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 re-actions such as hydrogenation and isomerization.

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