JEE Advanced2022ChemistryHaloalkanes and HaloarenesActual
Considering the following reaction sequence, the correct statement(s) is(are)
Options
- ACompounds P and Q are carboxylic acids.
- BCompound S decolorizes bromine water.
- CCompounds P and S react with hydroxylamine to give the corresponding oximes.
- DCompound R reacts with dialkylcadmium to give the corresponding tertiary alcohol.
Correct answer
A. Compounds P and Q are carboxylic acids.
Step-by-step solution
Benzene undergoes friedel craft's reaction with succinic anhydride in presence of anhydrous AlCl 3 to form P.The mechanism of the reaction is electrophilic substitution. The keto group in P gets reduced on reaction Zn/Hg in HCl to form Q that is 4-phenylbutanoic acid. This reacts with thionyl chloride to form R, that is 4-Phenylbutanoyl chloride. R again undergoes friedel craft's reaction to form S. S gets reduced on reaction Zn/Hg in HCl to form a hydrocarbon as given in the reactions below. Compound S can