Toluene → 5-Norbornene-2-carboxylic acid

Participants

Reaction Steps

To a four-necked flask having a capacity of 1 L and equipped with a stirrer, a thermometer, and a dropping funnel, 0.40 g of p-methoxyphenol, 108.1 g (1.50 mol) of acrylic acid, and 300 mL of toluene were added, and 109.1 g (1.65 mol) of cyclopentadiene was added dropwise to the flask from the dropping funnel at 40° C. or lower over 2 hours. After completion of the addition, the resultant mixture was stirred at room temperature for 10 hours, and then concentrated under reduced pressure, to thereby obtain 167.3 g (1.21 mol) of 5-norbornene-2-carboxylic acid.

Provenance & Evidence