Question

Identify X, Y and Z in the following sequence of reactions:

\[\ce{C5H5NH2 ->[Na NO2, HCl][273K]X->[CuBr, HBr][]Y->[CH3Cl][AlCl3]Z}\]

Answer 1

\[\ce{C5H5NH2 ->[Na NO2, HCl][273K]\mathbf{\underset{\text{pyridine diazonium chloride}}{C_5H_5N-N_2^+ Cl^-}}->[CuBr, HBr][]\mathbf{\underset{\text{bromopyridine}}{C_5H_5N-Br}}->[CH3Cl][AlCl3]\mathbf{\underset{\text{methylbromopyridine}}{CH_3-C_5H_3N-Br}}}\]