C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/472.3, 260/4
C07C 69/00 (2006.01) C07C 59/64 (2006.01) C07C 69/612 (2006.01)
Patent
CA 1182834
ABSTRACT OF THE DISCLOSURE Optically active methyl esters of arylpropionic acids are prepared by reaction of the corresponding vinylaromatic com- pounds with carbon monoxide and methyl alcohol in the presence of a palladium catalyst system consisting of a palladium com- pound associated with optically active diphenyl-neomenthyl- phospine and with trifluoroacetic acid, at substantially atmos- pheric pressure and at a temperature comprised between 20° and 80°C. There is dealt with particular regioselective and enan- tioselective catalysis conditions. The products obtained consist of esters of arylpropionic acids or of the corresponding acids obtainable from them, and are useful intermediates in the syn- thesis of organic compounds, particularly of pharmaceutical products.
408622
Chiusoli Gian P.
Cometti Giuseppe
Marks & Clerk
Montedison S.p.a.
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