1: With lithium hexamethyldisilazane; 2-dicyclohexylphosphino-1,1'-biphenyl; tris(dibenzylideneacetone)dipalladium (0) in tetrahydrofuran T=65°C; 24 h; 2: With hydrogenchloride in tetrahydrofuran T=20°C; 0.0833333 h; Further stages.;

sodium carbonate in water; isopropyl alcohol Reflux;

sodium hydroxide; sodium carbonate in water

sodium hydroxide 1) 210 deg C, 2.5h, 2) 80 deg C; Yield given. Multistep reaction;

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