反应详情

A mixture of disocium terephthalate, 16.5 g. (0.08 mole) and 4-tert.-butyl-3-hydroxy-2,6-dimethylbenzyl chloride, 35.7 g. (0.158 mole) in 200 ml. of dimethylformamide was heated at reflux for 18 hours. The salt was then filtered off, and the filtrate poured into 400 ml. of water. The resulting brown gum was dissolved in 50 ml. of methanol and reprecipitated by addition of water. This procedure was repeated to give 18.9 g. (44%) of product, m.p. 227°-230° C. Anal. calc'd. for C34H42O6 : C=74.67, H=7.75; found: C=74.03, H=7.75.

1. temperatureat reflux for 18 hours
2. filtrationThe salt was then filtered off
3. additionthe filtrate poured into 400 ml
4. dissolutionThe resulting brown gum was dissolved in 50 ml
5. customof methanol and reprecipitated by addition of water
6. customto give 18.9 g