Chapter 9.13, Problem 43ATS

 (a)

Interpretation Introduction

Interpretation:

Reagents should be predicted for the given transformations.

Concept introduction:

Reagent: reagent is a compound or compound mixture that is used in the chemical transformation of the reactions. Reagents for some reactions are given below.

• Elimination reaction: in elimination reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene.
• Addition reaction: in addition reaction, two substituents are added to the reactant without losing any compound.
• Hydration: addition of water molecule across the double bond is called hydration reaction. Hydration of alkene can be achieved in many ways.
• Oxy mercuration-demercuration: this process undergoes through the addition of water according to Markovnikov’s rule without forming carbocation as intermediate.
• Hydroboration-oxidation reaction: addition of –H and –OH group across the double bond in presence of borane and hydrogen peroxide with base is known as hydroboration-oxidation reaction. Simple hydration in acidic media gives the addition product through carbocation intermediate.
• Hydro halogenation: hydrogen and halogen added across the double bond of the alkene in Markovnikov’s path is called hydro halogenation. This addition reaction proceeds via anti-Markovnikov’s path in presence of peroxides.

To find: the reagent for the given transformation.

(b)

Interpretation Introduction

Interpretation:

Reagents should be predicted for the given transformations.

Concept introduction:

Reagent: reagent is a compound or compound mixture that is used in the chemical transformation of the reactions. Reagents for some reactions are given below.

• Elimination reaction: in elimination reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene.
• Addition reaction: in addition reaction, two substituents are added to the reactant without losing any compound.
• Hydration: addition of water molecule across the double bond is called hydration reaction. Hydration of alkene can be achieved in many ways.
• Oxy mercuration-demercuration: this process undergoes through the addition of water according to Markovnikov’s rule without forming carbocation as intermediate.
• Hydroboration-oxidation reaction: addition of –H and –OH group across the double bond in presence of borane and hydrogen peroxide with base is known as hydroboration-oxidation reaction. Simple hydration in acidic media gives the addition product through carbocation intermediate.
• Hydro halogenation: hydrogen and halogen added across the double bond of the alkene in Markovnikov’s path is called hydro halogenation. This addition reaction proceeds via anti-Markovnikov’s path in presence of peroxides.

To find: the reagent for the given transformation.