In this scheme the aromatic substrate is functionalized and the final step unmasks the amine by reduction of a nitrogen-bearing group, so the carbon skeleton is retained and only that substituent is converted to −NH2. Following the substitution pattern fixed by the directing groups through to the reduction identifies the aromatic amine P as 3-methylaniline (m-toluidine).
JEE Main · 2020 · 09 Jan 2020 · Shift 2 · Single correct option