反应详情

A mixture of 250 g of 75% strength aqueous formic acid, 50 g of p-isopropylphenylethynylcarbinol and 0.5 g of hydroquinone is refluxed for 1 hour and then worked up as described in Example 1 to give 38 g (corresponding to 76% of theory) of p-isopropylcinnamaldehyde having a boiling point of 90°-95° C./0.06 mbar.

1. temperatureis refluxed for 1 hour