1: dicyclohexyl-carbodiimide; 4-(N,N-dimethlyamino)pyridine / dichloromethane / 20 °C / |Inert atmosphere 2: sodium thiomethoxide / dichloromethane; methanol / 0.5 h / 20 °C / |Inert atmosphere 3: NiCl2*glyme; bis[2-(diphenylphosphino)phenyl] ether / tetrahydrofuran / 24 h / 20 °C / |Inert atmosphere View Scheme

sodium tetrahydroborate; boron trifluoride diethyl etherate

1: 90 percent / p-TsOH*H2O / benzene / 0.5 h / Heating 2: 81 percent / mCPBA / CH2Cl2 / 1 h / 0 - 20 °C 3: 98 percent / PBu3, Pd(OAc)2 / 2-methyl-propan-2-ol / 0.17 h / Heating; other solvent, reagent, reaction time View Scheme

sodium dichromate; sulfuric acid in dimethyl sulfoxide

morpholine; [Ni0(1,5-cyclooctadiene)2]; potassium phosphate; trimethylphosphane in tetrahydrofuran; 1,4-dioxane T=100°C; 2 h; Inert atmosphere;

phosphorus pentoxide; Petroleum ether; benzene

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