| 摘要 |
A process for preparing unsaturated ethers of the formula (1) <IMAGE> (1) from acetals or ketal of the formula (2) <IMAGE> (2) is improved by heating the acetals or ketals at from 100 DEG to 250 DEG C. in a high-boiling, branched carboxylic acid and obtaining the unsaturated ether as a distillate. The process, which is insensitive to contaminants, gives the unsaturated ether in high yields.
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