abstract |
The present invention relates to a novel process for preparing substituted and unsubstituted (2,4 dimethylbiphenyl-3-yl) acetic acids and their esters of the formula (I) using the same and different palladium catalysts, The invention relates to the intermediates 4-tert-butyl-2,6-dimethylphenylacetic acid and 4-tert-butyl-2,6-dimethylmandelic acid and methods for their preparation. |