| abstract |
Process for preparing a compound of the formula (I) in which R 1 and R 2 are each independently H, C 1 -C 8 -alkyl, halogen, polyhalo-C 1 -C 8 -alkoxy, polyhalo-C 1 -C 8 -alkyl, C 1 -C 8 -alkoxy, C 1 -C 8 -alkoxy-C 1 -C 8 -alkyl, or C 1 -C 8 -alkoxy-C 1 -C 8 -alkoxy, where R 1 and R 2 are not both H, and R 3 is C 1 -C 8 -alkyl, which is characterized in that a) a compound of the formula (II) in which R 1 and R 2 are each as defined above and X is Br, I, triflate, toyslate or mesylate is reacted with prop-2-yn-1-ol to give the compound of the formula (III), b) the compound of the formula (III) is reacted with an alkyl-metal compound in which “alkyl” is as defined above for R 3 to give a compound of the formula (I). |