摘要 |
Description Process for the preparation of (aryl)-(dimethyl)-(3-(4-fluoro-3-aryloxyphenyl)propyl)silanes The present invention relates to a process for the preparation of compounds of the formula I <IMG> (I) in which R1 denotes H, halogen, (C1-C4)-alkyl or (C1-C4)-alkoxy and R2 denotes H, halogen, (C1-C4)-alkyl, (C1-C4)-alkyl- thio, (C1-C4)-alkoxy or the bivalent group 3,4-0-CH2-O, comprising reacting a compound of the formula II <IMG> (II) in uhich X denotes halogen and R2 has the meaning as in formula I, in the presence of a copper catalyst with an alkali metal phenolate or alkaline earth metal phenolate of the formula III <IMG> (III) in which M denotes an alkali metal or an alkaline earth metal and R1 has the meaning as in formula I.
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