abstract |
The invention relates to the biphenyldiols of the formula (V) n n n The corresponding racemic and enantiomerically pure triflate compounds thereof, where R 1 and R 2 are H, R 3 is chlorine, and R 4 is methoxy. n In an alternate embodiment, R 1 and R 2 are hydrogen and R 3 and R 4 are C 1 -C 4 -alkoxy, fluorine, or chlorine. |