Which of the following named reactions is specifically utilized to prepare phenyl isothiocyanate (al — Aromatic Hydrocarbons Chemistry Question

💡 Solution & Explanation

In the Hoffmann Mustard Oil reaction, a primary amine like aniline is warmed with carbon disulfide ($CS_2$) and mercuric chloride ($HgCl_2$) to form phenyl isothiocyanate ($C_6H_5-N=C=S$). The Carbylamine reaction produces isocyanide; Schotten-Baumann is for benzoylation; and the Sandmeyer reaction converts diazonium salts to aryl halides/cyanides.