sodium carbonate; tetrakis(triphenylphosphine) palladium(0) in ethylene glycol dimethyl ether

hydrogenchloride; sodium; sodium carbonate; Merrifield resin; tetrakis(triphenylphosphine) palladium(0) 2.) DME, reflux, 24 h; 3.) dioxan, 80 deg C, 48 h; Yield given. Multistep reaction;