water

<b>Multi-step reaction with 4 steps<br /> </b>1: aq. H₂SO₄, AcOH<br />2: HNO₃, AcOH<br />3: H₂ / Pd-C<br />4: HBF₄, aq. NaNO₂ <br /> <br /> &nbsp;

<b>Multi-step reaction with 5 steps<br /> </b>1: aq. HCl, AcOH<br />2: aq. HBr, AcOH<br />3: HNO₃, AcOH<br />4: H₂ / Pd-C<br />5: HBF₄, aq. NaNO₂ <br /> <br /> &nbsp;

<b>Multi-step reaction with 5 steps<br /> </b>1: aq. NaOH<br />2: aq. H₂SO₄, AcOH<br />3: HNO₃, AcOH<br />4: H₂ / Pd-C<br />5: HBF₄, aq. NaNO₂ <br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: H₂ / Pd-C<br />2: HBF₄, aq. NaNO₂ <br /> <br /> &nbsp;