Aluminium Chloride‐Catalyzed Cycliakylation of 1‐(2‐Methoxyphenyl)‐3‐Methylbut‐2‐ene

Selective sp3 C–H Bond Activation Based on a Carbocation Relay: Friedel–Crafts Reaction with Alkanes as the Alkylating Component

“…4‐Methoxy‐1,1‐dimethylindane (2a): 9 1 H NMR (400 MHz): δ = 1.25 (s, 6 H, 1‐CH 3 ), 1.92 (t, J = 7.2 Hz, 2 H, 2‐H), 2.84 (t, J = 7.2 Hz, 2 H, 3‐H), 3.82 (s, 3 H, CH 3 O), 6.67 (d, J = 8.0 Hz, 1 H, 5‐H), 6.77 (d, J = 7.6 Hz, 1 H, 7‐H), 7.15–7.19 (m, 1 H, 6‐H) ppm.…”