All Exams Test series for 1 year @ ₹349 only
Question

The most appropriate sequence of reactions for carrying out the following conversion 

is

The correct answer is
(i) $O_3/ Me_2S$; (ii) $NaOEt$; (iii) $N_2H_4 / KOH$

The given conversion involves transforming the bicyclic compound into another with fewer carbon atoms in one of the rings. This can be achieved using an oxidative cleavage followed by a suitable rearrangement and reduction.

Let's analyze the correct sequence of reactions:

  1. Ozonolysis: The first step involves the addition of ozone (O_3) in the presence of dimethyl sulfide (Me2S). This will cleave the double bond, forming two carbonyl compounds.
  2. Base-Induced Elimination: Using sodium ethoxide (NaOEt), a strong base, an elimination reaction occurs, which can lead to the formation of an enol or an alpha-beta unsaturated carbonyl compound.
  3. Wolff-Kishner Reduction: Finally, using hydrazine (N_2H_4) in the presence of potassium hydroxide (KOH), the carbonyl group is reduced to an alkane, completing the restructuring of the molecule to the desired product.

In conclusion, the correct sequence for the transformation is:

(i) O_3/ Me_2S; (ii) NaOEt; (iii) N_2H_4 / KOH

This series of reactions effectively performs oxidative cleavage, followed by a rearrangement and reduction, transforming the starting material to the desired product.

Was this answer helpful?

Important Questions from Organic Synthesis

  1. For an unambiguous single step synthesis of the following target molecule (TM), the best bond disconnection in its retrosynthetic analysis is
     

  2. The major products X and Y formed in the following reaction sequences are

  3. For the following reaction, the possible product(s) is/are

  4. The reaction(s) that yield(s) X as the major product is (are) 

  5. The major products E and F in the following reaction sequence are 

Need Expert Advice?

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App