C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 47/27 (2006.01) C07C 37/20 (2006.01) C07C 39/11 (2006.01) C07C 45/64 (2006.01) C07C 45/71 (2006.01) C07D 207/333 (2006.01) C07D 213/48 (2006.01) C07D 231/12 (2006.01) C07D 233/64 (2006.01) C07D 263/22 (2006.01) C07D 277/30 (2006.01) C07D 307/46 (2006.01) C07D 333/22 (2006.01)
Patent
CA 2092869
O.Z. 0050/43172 Abstract of the Disclosure: A process for preparing 3- (hydroxyphenyl)propionaldehydes of the formula I Image (I) and, where appropriate, for preparing 3-(hydroxyphenyl)- propanols of the formula II Image (II) where R1, R2, R3 and R4 are each hydrogen , C1-C20-alkyl , C3-C20-cycloalkyl, C4-C20-alkylcyclo- alkyl, C4-C20 cycloalkylalkyl or C5-C20-alkylcycloalkylalkyl, R3 and R4 are each aryl, C7-C20-aralkyl, hetero- cycloalkyl or C3-C20-heterocycloalkyl- alkyl, entails a) reacting phenols of the formula III Image (III) where R1 and R2 have the abovementioned O.Z. 0050/43172 meanings, with 3-hydroxypropionaldehydes of the formula IV Image (IV) where R3 and R4 have the abovementioned mean- ings, in the presence of a basic catalyst at from 90 to 230°C and under from 0.01 to 50 bar and, where appropriate, b) treating the resulting 3-(hydroxyphenyl)pro- pionaldehydes of the formula I Image (I) where R1, R2, R3 and R4 have the abovementioned meanings, with hydrogen in the presence of a hydrogenation catalyst at from 0 to 250°C and under from 0.1 to 300 bar.
Merger Franz
Schmidt-Radde Martin
Basf Aktiengesellschaft
Robic
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