1: 98 percent / xylene / 1.5 h / Heating 2: 69 percent / 85percent H2SO4 / 0.17 h / 140 °C View Scheme

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<b>Multi-step reaction with 2 steps<br /> </b>1: NaN₃ / dimethylformamide / 7 h / 40 &deg;C<br />2: toluene / 90 &deg;C<br /> <br /> &nbsp;