1: 95 percent / benzene / Heating 2: 98 percent 3: 41 percent / 2,3-dicyano-5,6-dichloroquinone / dioxane / 12 h / Heating 4: 96 percent / H2 / Pd/C / methanol 5: 15 percent / dicyclohexylcarbodiimide, meta-chloroperoxybenzoic acid 6: toluene / Heating; Otera's catalyst 7: 96 percent / H2 / Pd/C / methanol View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: Et₃N / benzene / Heating<br />2: BF₃OEt₂ / benzene / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: H₂SO₄ / benzene / Heating<br />2: KHCO₃ <br />3: Et₃N / benzene / Heating<br />4: BF₃OEt₂ / benzene / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: KHCO₃ <br />2: Et₃N / benzene / Heating<br />3: BF₃OEt₂ / benzene / Heating<br /> <br /> &nbsp;