boron trifluoride diethyl etherate T=100°C; Friedel-Crafts acylation; 2 h;

hydrogenchloride; diethyl ether; zinc(II) chloride und Kochen des Reaktionsprodukts mit Wasser;

1: 1-(2,4-dihydroxyphenyl)-2-(4'-methylphenyl)-ethanone With boron trifluoride diethyl etherate in N,N-dimethyl-formamide T=55°C; Inert atmosphere; 2: N,N-dimethyl-formamide With methanesulfonyl chloride T=55 - 80°C; 3 h; Inert atmosphere;

morpholine in isopropyl alcohol T=80°C;