Question

Schiffs base and Schiffs reagent are

• A. structural isomers
• B. anomers
• C. diastereomers
• D. entirely different compounds

Answer 1

Answer: (D)

Schiffs reagent and Schiffs bases are entirely different compounds. Schiffs reagent is magenta solution (Rosaniline dye) decolourised by sulphurous acid $(H_{2}S{O}_3)$ . Schiff base is obtained by condensation of aldehydes/ketones with amines, $RCH=O+H_{2}NR\underset{-H_{2}O}{\to }\underset{Schiffsbase}{RCH=NR}$