Scope of the intramolecular Pd-catalyzed C–H bond activation with 2-halobenzyl aryl ethers^a,b.

^aReactions were carried out under air atmosphere using 6a–k (1 equiv., 0.2 mmol), K₂CO₃ (3 equiv.); and solvent (V_f = 4 mL), heating in an oil bath for 48 h.

^bYields were quantified by ¹H NMR using 4-nitroacetophenone as internal standard.

^cThe benzyl phenyl ether (8a) was observed in 7% yield.

^dThe benzyl phenyl ether (8a) was detected in 30% yield.

^eYields were quantified by GC using 4-nitroacetophenone as internal standard.

^fThe substrate was recuperated in ca. 100% yield.

^gn.d.: not detected.