Continuous process for racemization of benzylic alcohols,...

Details Continuous process for racemization of benzylic alcohols,... Continuous process for racemization of benzylic alcohols,...

C - Chemistry, Metallurgy

07

C

C07C 33/22 (2006.01) C07C 29/76 (2006.01) C07C 33/46 (2006.01) C07C 41/34 (2006.01) C07C 43/174 (2006.01) C07C 43/23 (2006.01) C07C 67/56 (2006.01) C07C 69/14 (2006.01) C07C 213/10 (2006.01) C07C 215/30 (2006.01) C07D 213/30 (2006.01)

Patent

CA 2165125

Benzyl alcohols, ethers or esters, having a chiral center at the benzylic carbon can be conveniently racemized by treatment with solid acids which are strongly acidic cation exchange materials. Racemization may be effected generally in the range from 20-150°C in aqueous or partly aqueous systems in combination with a water-miscible organic solvent to improve solubility of the benzyl compund. Recycling of unwanted enantiomers obtained in the resolution of racemic mixtures is thus facilitated.

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