1: tert-butyl 6-chlorohexanoate With indium tribromide; dimethylmono-chlorosilane in 1,2-dichloro-ethane T=20°C; 2 h; Inert atmosphere; 2: methoxybenzene in 1,2-dichloro-ethane T=90°C; Friedel Crafts acylation; 5 h; regioselective reaction;