Process for hydroformylation of olefinic compounds

Details Process for hydroformylation of olefinic compounds Process for hydroformylation of olefinic compounds

1996-12-02

1999-02-23

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568451, C07C 4550

Patent

active

058746382

ABSTRACT:
A hydroformylation process for unsaturated compounds such as monoolefins and diolefins is carried out in an ionic medium in which the catalytic species is dissolved, but in which the reaction products (aldehydes) formed are only slightly soluble or are insoluble. The ionic medium is liquid at a temperature below 90.degree. C. and comprises at least one quaternary ammonium and/or phosphonium cation and at least one anion which is preferably selected from the group formed by tetrafluoroborate when the cation is ammonium, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, perfluoroalkylsulphonates, fluorosulphonate, bis-perfluoroalkylsulphonyl amides or dichlorocuprate, tetrachlorocuprate, tetrachloroaluminate, or trichlorozincate. At the end of the reaction, the organic phase is separated out and the polar phase containing the catalyst is used again.

REFERENCES:
patent: 3511880 (1970-05-01), Booth
patent: 3832391 (1974-08-01), Parshall
patent: 4451679 (1984-05-01), Knifton et al.
patent: 4451680 (1984-05-01), Knifton et al.

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