Identify the reagents used for the following conversion

Options

A $A = {LiAlH}_{4}, B = {NaOH}_{( aq )}, C = {NH}_{2} - {NH}_{2} / KOHethyleneglycol$
B $A = {LiAlH}_{4}, B = {NaOH}_{\text{(alc)}}, C = Zn / HCl$
C $A = DIBAL - H, B = {NaOH}_{( aq )}C = {NH}_{2} - {NH}_{2} / KOHethyleneglycol$
D $A = DIBAL - H, B = {NaOH}_{( alc )}, C = Zn / HCl$

Correct answer

D. $A = DIBAL - H, B = {NaOH}_{( alc )}, C = Zn / HCl$

Step-by-step solution

Diisobutylaluminum hydride (DIBAL-H) is an organoaluminum reagent typically used for the reduction esters or nitriles to aldehydes.

In the second step intramolecular aldol condensation reaction takes place. Cyclization occurs if the α carbon atom and the second carbonyl carbon atom can bond to form a five- or six-membered ring.

The Clemmensen reduction is a reaction that is used to reduce aldehydes or ketones to alkanes using hydrochloric acid and zinc amalgam. In the same condition, alcohol converts to alkenes.

Identify the reagents used for the following conversion

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