1: NCS / CCl4 / 15 h / Ambient temperature 2: 76 percent / K2CO3 / tetrahydrofuran / 3 h / Heating View Scheme

<b>Multi-step reaction with 4 steps<br /> </b>1: TiCl₄ / benzene<br />2: LDA / tetrahydrofuran<br />3: K₂CO₃ / methanol<br />4: aq. oxalic acid<br /> <br /> &nbsp;