Nitrogen → [4'-(8,12b-Diazabenzo[a]aceanthrylen-8-yl)biphenyl-4-yl]diphenylamine

Participants

Reaction Steps

A degassed solution of 35.6 g (89 mmol) of (4′-bromobiphenyl-4-yl)-diphenylamine and 22.0 g (81 mmol) of 8H-8,12b-diazabenzo[a]aceanthrylene in 1000 ml of dioxane is saturated with N2 for 1 h. Then firstly 1.0 ml (4 mmol) of P(tBu)3, then 0.4 g (2 mmol) of palladium(II) acetate are added to the solution, and 11.7 g (122 mmol) of NaOtBu in the solid state are subsequently added. The reaction mixture is heated under reflux for 18 h. After cooling to room temperature, 1000 ml of water are carefully added. The organic phase is separated off, washed with 4×50 ml of water and dried over MgSO4, and the solvent is removed in vacuo. The pure product is obtained by recrystallisation and final sublimation in a high vacuum.

Provenance & Evidence