C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/515.3, 260/3
C07C 57/30 (2006.01) C07C 51/10 (2006.01) C07C 57/58 (2006.01) C07C 59/66 (2006.01)
Patent
CA 1200814
A B S T R A C T A process is described _ _ _ _ _ _ _ _ _ _ _ _ for the prepara- tion of alpha-alylpropionic acids and alkaline salts thereof having the formula (I): (I) Image wherein Ar represents an aromatic, heteroaromatic group con- taining one or more rings, however linked together, having in total up to 20 carbon atoms, preferably chosen from amongst phenyl-, naphthyl-, diphenyl- and thienyl groups, in their turn also substituted by groups inert under reaction conditions, preferably chosen from amongst: alkyl-, cyclo- alkyl- and aryl- groups also substituted, halogens, alko- xyl groups, phenoxyl groups, ketonic groups, by reaction ... Abstract # 1,200.814 with carbon monoxide of the corresponding secondary halids of formula (II): (II) Image wherein: Ar has already been defined, while X is a halogen chosen from between Cl and Br, and which process is charac- terized in that the reaction is conducted in an anhydrous al cohol solvent consisting of alkanols having up to 4 carbon atoms, in the presence of alkaline hydroxides, and in the further presence of a salt of cobalt hydrocarbonyl, optionally supported on resins, or of its precursors, at a temperature comprised between 0°C and 50 °C and at about substantially atmospheric pressure. The products thus obtained find a particular use in the field of pharmaceutics (analgesics, antipyretics, etc.) and as intermediates for chemical syntheses in general in the field of so-called fine chemicals, and ofphytodrugs.
411773
Foa Marco
Francalanci Franco
Gardano Andrea
Marks & Clerk
Montedison S.p.a.
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