Table 2. Comparison between P3 and P4 and Selected Examples of the Initial Reaction Scope Using P4^a.

^aReaction conditions: aryl halide (0.5 mmol), amine (0.6 mmol), NaO-t-Bu (0.6 mmol), 1,4-dioxane (0.5 mL). Ad = adamantyl

^bReaction conditions: 1% P, 80 °C, 90 min.

^cGC yield.

^dReaction conditions: 2% P4, 120 °C, 24 h.

^eReaction conditions: 1% P4, 100 °C, 12 h.

^fIsolated yield.