- Preparation of silicon-containing vinyl ethers and vinyl thioethers
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Process for preparing silicon-containing vinyl ethers and vinyl thioethers of the general formula I STR1 where the variables have the following meanings: X is oxygen or sulfur, R1 is C1 -C20 -alkylene, C3 -C12 -cycloalkylene or C6 -C10 -arylene, R2, R3 and R4 are hydrogen, C1 -C20 -alkyl, C3 -C12 -cycloalkyl, C1 -C12 -alkoxy, phenoxy, heteroaryl or together with R1 form a C3 -C12 -cycle, by reaction of silicon-containing alcohols or thiols of the general formula II STR2 where the variables have the meaning indicated above, with acetylene, by carrying out the reaction in phenyl methyl sulfoxide, dimethyl sulfoxide, sulfolane or hexamethylphosphoramide in the presence of an alkali metal hydroxide.
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