- PROCESS FOR PREPARING CIS-5-[1-(4-CHLOROPHENYL)-METHYLENE]-1-HYDROXYMETHYL-2,2-DIMETHYLCYCLOPENTANOL
-
The present invention relates to a process for preparing a diol of the formulae (la) (lb), or a mixture thereof, comprising the reaction of an epoxy alcohol of formulae (Va) or (Vb), or a mixture thereof, with alkali metal borohydride or earth alkaline borohydride, in particular sodium borohydride, and anhydrous aluminum(lll) chloride. The invention also relates to processes and intermediates for preparing an epoxy alcohol of formulae (Va) or (Vb). The invention furthermore relates to processes for preparing cis-metconazole in which a diol of the formulae (la) or (lb) is applied as a precursor.
- -
-
Page/Page column 19
(2013/08/28)
-