potassium hydroxide; hydrazine hydrate in diethylene glycol

<b>Multi-step reaction with 2 steps<br /> </b>1: SOCl₂, Py / benzene<br />2: AlCl₃ / 1,2-dichloro-ethane<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: aq. KOH<br />2: xylene / Heating<br />3: SOCl₂, Py / benzene<br />4: AlCl₃ / 1,2-dichloro-ethane<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: (i) nPrMgBr, TiCl₄, THF, (ii) /BRN= 1900390/<br />2: SOCl₂, Py / benzene<br />3: AlCl₃ / 1,2-dichloro-ethane<br /> <br /> &nbsp;

<b>Multi-step reaction with 5 steps<br /> </b>1: (i) TsCl, Py, (ii) /BRN= 4725512/, EtOH<br />2: aq. KOH<br />3: xylene / Heating<br />4: SOCl₂, Py / benzene<br />5: AlCl₃ / 1,2-dichloro-ethane<br /> <br /> &nbsp;