反应详情

A mixture of 250 g of 75% strength aqueous formic acid, 50 g of p-methylphenylethynylcarbinol and 0.5 g of hydroquinone is refluxed for 1 hour and then worked up as described in Example 1 to give 40 g (corresponding to 80% of theory) of p-methylcinnamaldehyde having a boiling point of 90°-95° C./0.1 mbar.

1. temperatureis refluxed for 1 hour