2-Fluoroaniline → 2-[1-(2,4,6-Trimethylphenylimino) ethyl]-6-[1-(2-fluorophenylimino)ethyl]pyridine

Participants

Reaction Conditions

Reaction Steps

Monoimine (1, 1.0 g, 3.57 mmol) and 2-fluoroaniline (398 mg, 3.57 mmol) were dissolved in 50 ml of toluene. To this solution, 4 Å molecular sieves were added. After standing for 20 hours, with addition of more molecular sieves, the mixture was filtered. The solvent was removed in vacuum and the oily residue was warmed in ethanol (50° C.). The yellow solid, which precipitated after cooling at −20° C., was filtered off and dried in vacuo. Yield 300 mg (23%) of mixed diimine (14).

Provenance & Evidence