Named, Rearrangement & Reagent - GATE Chemistry MCQ

First step is Freidel Craft alkylation and second step is wolf-Kishner reduction. Therefore, opteion (c) iscorrect.

Step - 1: Hoffman bromode degradation(amide is converted into 1⁰ amine)
Step - 2: Diazotization; followed by decarboxylation and removal of N₂ gas by heat.

This is asymmetric induction, followed by metal reduction by LiA1H₄.

Oxalic acid is a mild acid, it will not isomerize.

The chelation effect in OH group is not given by the hydroxylation process because of steric effect.

It is the Swern-Oxidation with in absence of base. So, substitution product will be formed

This is acyl ion reaction mechanism is shown below :
 
 
 

DIBAL-H changes α - β unsaturated ester into alchol.

L-selective role is a Bulky reagent. So, will attack from equatorial side of the carbonyl group.

In the above rearrangement, Curtius, Hoffman, Lossen and Schmidt form isocyanate intermediate.

Total number of five functional groups reduced by LiAlH₄.

In the above structure, RCOCl and R-NO₂ are not reduce by Borane.