Product of the given substitution reaction has to be written and mechanism for the reaction should be predicted. Concept Introduction: S N 2 reaction: It is a nucleophilic substitution reaction in which the rate determining step depends on both alkyl halide and the nucleophile present. The bond making and the bond breaking process happens simultaneously in this reaction, which results in the inversion of configuration. Rate of S N 2 reaction depends on both alkyl halide and the nucleophile present. Rate = k [ alkylhalide ] × [ nucleophile ] Structure of the substrate plays a major role in S N 2 reaction. If the substrate is more substituted the rate of the reaction becomes slower. Since the mechanism of S N 2 reaction proceeds through backside attack on the substrate it depends on steric factor S N 1 reaction: it is a nucleophilic substitution reaction in which the rate determining step depends on one reactant. First step is the formation of more stable carbocation which is followed by the attack of nucleophile. Formation of more stable carbocation and the leaving group present in the substrate plays very important role in the reactivity of S N 1 reaction. Rate = k [ alkylhalide ]

Question

1. Which one(s) of these can be oxidized with CrO3 ? (could be more than one) a) triphenylmethanol b) 2-pentanol c) Ethyl alcohol d) CH3 2. Write in all the product(s) of this reaction. Label them as "major" or "minor". 2-methyl-2-hexanol H2SO4, heat

Answer 1

Question

Chapter 9.4, Problem 9.5P

(a)

Interpretation Introduction

Interpretation:

Product of the given substitution reaction has to be written and mechanism for the reaction should be predicted.

Concept Introduction:

SN2 reaction: It is a nucleophilic substitution reaction in which the rate determining step depends on both alkyl halide and the nucleophile present. The bond making and the bond breaking process happens simultaneously in this reaction, which results in the inversion of configuration. Rate of SN2 reaction depends on both alkyl halide and the nucleophile present.

Rate = k [alkylhalide]×[nucleophile]

Structure of the substrate plays a major role in SN2 reaction. If the substrate is more substituted the rate of the reaction becomes slower. Since the mechanism of SN2 reaction proceeds through backside attack on the substrate it depends on steric factor

SN1 reaction: it is a nucleophilic substitution reaction in which the rate determining step depends on one reactant. First step is the formation of more stable carbocation which is followed by the attack of nucleophile. Formation of more stable carbocation and the leaving group present in the substrate plays very important role in the reactivity of SN1 reaction.

Rate = k [alkylhalide]

(b)

Interpretation Introduction

Interpretation:

Product of the given substitution reaction has to be written and mechanism for the reaction should be predicted.

Concept Introduction:

SN2 reaction: It is a nucleophilic substitution reaction in which the rate determining step depends on both alkyl halide and the nucleophile present. The bond making and the bond breaking process happens simultaneously in this reaction, which results in the inversion of configuration. Rate of SN2 reaction depends on both alkyl halide and the nucleophile present.

Rate = k [alkylhalide]×[nucleophile]

Structure of the substrate plays a major role in SN2 reaction. If the substrate is more substituted the rate of the reaction becomes slower. Since the mechanism of SN2 reaction proceeds through backside attack on the substrate it depends on steric factor

SN1 reaction: it is a nucleophilic substitution reaction in which the rate determining step depends on one reactant. First step is the formation of more stable carbocation which is followed by the attack of nucleophile. Formation of more stable carbocation and the leaving group present in the substrate plays very important role in the reactivity of SN1 reaction.

Rate = k [alkylhalide]

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