Process for the preparation of 5-formylvaleric acid and 5-formyl

Details Process for the preparation of 5-formylvaleric acid and 5-formyl Process for the preparation of 5-formylvaleric acid and 5-formyl

1996-06-27

1998-02-17

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6966, C07C 59147

Patent

active

057193126

ABSTRACT:
The invention relates to a process for the preparation of 5-formylvaleric acid or the corresponding 5-formylvalerate by hydroformylation of 3-pentenoic acid or 3-pentenoate ester with carbon monoxide and hydrogen in the presence of a catalyst comprising of rhodium and a phosphite ligand, wherein the phosphite ligand is represented by the following general formula ##STR1## where R.sup.1 and R.sup.2 are the same or different aromatic organic groups and where A is an n-valent group or atom and where n is an integer group may be the same group or different groups and where the phosphite forms a chelate-type complex with rhodium.

REFERENCES:
patent: 5264616 (1993-11-01), Roeper et al.

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