JEE Advanced2022ChemistryCarboxylic Acid DerivativesActual
Considering the reaction sequence given below, the correct statement(s) is(are)
Options
- AP can be reduced to a primary alcohol using NaBH 4 .
- BTreating P with conc. NH 4 OH solution followed by acidification gives Q .
- CTreating Q with a solution of NaNO 2 in aq . HCl liberates N 2 .
- DP is more acidic than CH 3 CH 2 COOH .
Correct answer
B. Treating P with conc. NH 4 OH solution followed by acidification gives Q .
Step-by-step solution
Propanoic acid is having α-hydrogen hence it is halogenated at the α-position on treatment with chlorine or bromine in the presence of small amount of red phosphorus to give α-bromo propanoic acid. The reaction is known as Hell-Volhard-Zelinsky reaction. Second step of the reaction involves Gabriel phthalimide synthesis Where potassium salt of phthalimide which on heating with 2-bromo propanoic acid followed by alkaline hydrolysis produces the corresponding 2-amino propanoic acid. Aromatic primary