反应详情

Procedure as described for Amidine I using the following amounts: 7.80 mL of 2-isopropyl-6-methylaniline (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 dark brown. Addition of water yielded an orange-brown solution with suspended solid. Solution was filtered and taken to dryness. The residue was treated with 100 mL of pentane stirred overnight and filtered yielding 10.98 g (83%) of beige material. 1H NMR (400 MHz, CDCl3): 7.82 (d, 2H), 7.26 (d, 2H), 7.15 (d, 1H), 7.05 (d, 1H), 6.98 (t, 1 H), 4.56 (s, 2H), 3.09 (septet, 1H), 2.42 (s, 3H), 2.15 (s, 3H), 1.21 (d, 3H), 1.16 (d, 3H).

1. temperatureAfter refluxing overnight
2. customyielded an orange-brown solution
3. filtrationSolution was filtered
4. additionThe residue was treated with 100 mL of pentane
5. filtrationfiltered