反应详情

A solution of toluene (180 mL), piperidine (0.60 mL), acetic acid (0.63 mL), 4-[3-(1-adamantyl)-4-hydroxyphenyl]benzaldehyde (6.08 g, 18.30 mmol) and 2,4-thiazolidinedione (2.14 g, 18.30 mmol) was heated at reflux for 12 hours under an argon atmosphere. The resulting suspension was filtered hot and the solid was stirred at room temperature in 210 mL of H2O/EtOH (6:1). After 30 minutes the solid was filtered and dried under high vacuum to afford 5.6 g (71%) of 4-[3-(1-adamantyl)-4-hydroxyphenyl]benzylidene-2,4-thiazolidinedione, mp 307–308.5° C. 1H NMR (300 MHz; DMSO-d6): δ 1.75 (brs, 6H), 2.05–2.13 (m, 9H), 6.88 (dd, J1=1.8 Hz, J2=8.7 Hz, 1H), 7.40–7.42 (m, 2H), 7.61–7.64 (m, 2H), 7.73–7.79 (m, 3H), 9.62 (s, 1H), 12.57 (brs, 1H).

1. temperatureat reflux for 12 hours under an argon atmosphere
2. filtrationThe resulting suspension was filtered hot
3. filtrationAfter 30 minutes the solid was filtered
4. customdried under high vacuum