反应详情

Procedure as described for Amidine I using the following amounts: 6.15 mL of 2,6-dimethylaniline (50.0 mmol); 25.0 mL of 2.0 M butyllithium (50.0 mmol), 5.86 g of 4-methylbenzonitrile (50.0 mmol). After refluxing overnight, the solution was deep red. Addition of water yielded a yellow solution with suspended solid. Solution was filtered, taken to dryness, resuspended in 100 mL of pentane and stirred vigorously for 1 hour. The resulting white solid was filtered, washed with 10 mL of pentane and dried in vacuo yielding 11.19 g (90%) of white powder. 1H NMR (400 MHz, CDCl3): 7.83 (d, 2H), 7.26 (d, 2H), 7.05 (d, 2H), 6.89 (t, 1H), 4.54 (s, 2H), 2.42 (s, 3H), 2.15 (s, 6H).

1. temperatureAfter refluxing overnight
2. customyielded a yellow solution
3. filtrationSolution was filtered
4. filtrationThe resulting white solid was filtered
5. washwashed with 10 mL of pentane
6. customdried in vacuo