in N,N-dimethyl-formamide T=160°C; 1 h;

in N,N-dimethyl-formamide T=160°C; 6 h;

1: succinic acid anhydride; naphthalene With AlCl3, aluminium chloride in dichloromethane T=20°C; Friedel-Crafts Acylation; 24 h; Inert atmosphere; 2: ethanol With hydrogenchloride in water T=40°C; 72 h;

n-butyllithium 1.) ether, 0 deg C, 15 min, 2.) ether, a) -78 deg C, 1 h, b) RT, 1 h; Yield given. Multistep reaction;

tetrakis(triphenylphosphine) palladium(0); zinc copper