tetrakis(triphenylphosphine) palladium(0); copper(I) bromide in 1,4-dioxane 30 h; Heatingor PdCl2-(1,1'-bis(diphenylphosphino)ferrocene), DMF, 100 deg C, 8.5 h;

1: K2CO3 / acetone / 5 h / Heating 2: methanol / Irradiation 3: 1.) ClCOOEt, NEt3, 2.) NaBH4 4: ON(SO3K)2, Na2CO3*2H2O / Bu4N(1+)*HSO4(1-) / benzene; H2O / 0.5 h / Ambient temperature 5: AlCl3 / CH2Cl2 / 1 h / Ambient temperature View Scheme

1: ON(SO3K)2, Na2CO3*2H2O / Bu4N(1+)*HSO4(1-) / benzene; H2O / 0.5 h / Ambient temperature 2: AlCl3 / CH2Cl2 / 1 h / Ambient temperature View Scheme

1: methanol / Irradiation 2: 1.) ClCOOEt, NEt3, 2.) NaBH4 3: ON(SO3K)2, Na2CO3*2H2O / Bu4N(1+)*HSO4(1-) / benzene; H2O / 0.5 h / Ambient temperature 4: AlCl3 / CH2Cl2 / 1 h / Ambient temperature View Scheme

1: 1.) ClCOOEt, NEt3, 2.) NaBH4 2: ON(SO3K)2, Na2CO3*2H2O / Bu4N(1+)*HSO4(1-) / benzene; H2O / 0.5 h / Ambient temperature 3: AlCl3 / CH2Cl2 / 1 h / Ambient temperature View Scheme

aluminium trichloride in dichloromethane 1 h; Ambient temperature; Yield given;