Identify the reagent used in the following reaction. Benzoic acid $\stackrel{\text { Reagent }}{\Delta}$…

Identify the reagent used in the following reaction. Benzoic acid $\stackrel{\text { Reagent }}{\Delta}$ Benzoyl chloride + Phosphorous oxychloride + Hydrogen chloride
  1. $\mathrm{PCl}_3$
  2. $\mathrm{HCl}$
  3. $\mathrm{PCl}_5$
  4. $\mathrm{SOCl}_2$

Asked in: MHT CET 2023 (14 May Shift 1)

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