1: in diethyl ether T=20°C; Grignard reaction; 3 h; 2: With hydrogenchloride; water in diethyl ether Cooling;

1: With disodium benzophenone-4,4'-disulfonate; 3,3'-benzophenone disodium disulfonate in water 16 h; Irradiation; 2: With bromine; barium carbonate in 1,4-dioxane; water T=20°C; 2 h; Title compound not separated from byproducts;

Na 1-dimethylaminonaphthalide 1.) benzene, HMPA; Yield given. Multistep reaction. Yields of byproduct given;

Yield given. Multistep reaction. Yields of byproduct given;