Hofmann bromamide and Gabriel synthesis on drawn substrates

14 questions on Hofmann bromamide and Gabriel synthesis on drawn substrates from the Amines and Aromatic Nitrogen Compounds chapter: 3 NEET level, 5 JEE Main, 6 JEE Advanced. Each one opens with its answer and solution.

• The amide shown is treated with Br2 and aqueous NaOH (Hofmann bromamide reaction). Which structure is the product? NEET level, drawn structure
• The amide shown is treated with Br2 and aqueous KOH. Which structure is the organic product? NEET level, drawn structure
• The N-substituted imide shown is heated with hydrazine hydrate. Which amine is liberated? NEET level, drawn structure
• The optically active amide shown is treated with Br2/aqueous NaOH. Which structure is the major product? JEE Advanced level, drawn structure
• The diamide shown is subjected to Hofmann bromamide degradation (excess Br2/NaOH). Which structure is the product? JEE Main level, drawn structure
• The diamide shown is completely converted to the diamine by the Hofmann bromamide reaction, each amide group following RCONH2 + Br2 + 4NaOH -> RNH2 + Na2CO3 + 2... JEE Main level, drawn structure
• Potassium phthalimide fails to give the amine from the halide shown by the Gabriel route. What is the main reason? JEE Main level, drawn structure
• The amine shown is to be prepared by the Gabriel synthesis (potassium phthalimide, then hydrazine). Which halide should be used? JEE Main level, drawn structure
• The reagent shown is used in the Gabriel synthesis. Select all the amines that can NOT be prepared in a useful yield by this method. JEE Main level, drawn structure
• The amide shown is treated with Br2/aqueous NaOH and the product is then treated with cold NaNO2/HCl. Select all the correct statements. JEE Advanced level, drawn structure
• The nitrile shown is partly hydrolysed to the amide with alkaline hydrogen peroxide, and the amide is then treated with Br2/aqueous NaOH. Which structure is the... JEE Advanced level, drawn structure
• The cyclic imide shown is treated with Br2 and excess aqueous NaOH and then acidified gently. Which structure is the product? JEE Advanced level, drawn structure
• The amide shown (stereochemistry not specified) is subjected to the Hofmann bromamide reaction. How many stereoisomers (configurational isomers, optical and geo... JEE Advanced level, drawn structure
• The dibromide shown is heated with an excess of potassium phthalimide, and the product is then treated with hydrazine. Select all the correct statements. JEE Advanced level, drawn structure