| 摘要 |
A process for the preparation of 6-methyl-4-(R)-phenyl-chroman-2-one and 6-methyl-4-(S)-phenyl-chroman-2-one, intermediates for the synthesis of tolterodine and its (S) enantiomer, by reaction of 6-methyl-coumarin with phenylboronic acids, esters and derivatives thereof, in the presence of chiral catalysts.
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