反应详情

温度

160 °C

To a 3 neck 100 mL round bottomed flask equipped with a Dean Stark trap and condenser, thermocouple and argon inlet was added dimethyl naphthalene-2,6-dicarboxylate (10 grams, 40.94 mmoles, available from Sigma Aldrich), stearyl alcohol (22.15 grams, 81.89 mmoles, available from Spectrum Chemical), Fascat 4100 (0.03 grams, 0.1 wt %, available from Arkema Inc) and Xylenes (50 ml, available from Sigma Aldrich). The mixture was slowly heated under argon to 160° C. during which reagents melted/dissolved. The temperature was raised to 180° C. The reaction mixture was stirred at 180° C. overnight (˜20 hours) during which 46 mL of a mixture of xylenes and methanol was collected. Vacuum was applied (1-2 mm-Hg) for about 10 minutes during which an additional 5 mL of a mixture of Xylenes and methanol was collected. The solution was cooled under argon to about 140° C. and discharged in an aluminum tray where it was allowed to cool to room temperature to give product as an off-white solid. The product was transferred to a 1 L Erlenmeyer flask, about 100 mL of isopropyl alcohol was added, heated to about 100° C. during which product dissolved. The solution was cooled to room temperature during which product crystallized out, filtered and dried on a vacuum pump overnight to give 25.33 grams product as an off-white solid (86% yield). The product was shown to be pure by 1H NMR with trace amounts of the mono-ester. Physical properties of this compound are shown in Table 2 above. The FIGURE shows the rheological profile.

1. customTo a 3 neck 100 mL round bottomed flask equipped with a Dean Stark trap and condenser, thermocouple and argon inlet
2. dissolutionmelted/dissolved
3. temperatureThe temperature was raised to 180° C
4. customwas collected
5. customfor about 10 minutes
6. customwas collected
7. temperatureThe solution was cooled under argon to about 140° C.
8. temperatureto cool to room temperature
9. customto give product as an off-white solid
10. additionwas added
11. temperatureheated to about 100° C. during which product
12. dissolutiondissolved
13. temperatureThe solution was cooled to room temperature during which product
14. customcrystallized out
15. filtrationfiltered
16. customdried on a vacuum pump overnight